z/OSVersion 2 Release 4

MVS Initialization and Tuning Reference

IBM

SA23-1380-40

Note

Before using this information and the product it supports, read the information in “Notices” on page789.

This edition applies to Version 2 Release 4 of z/OS (5650-ZOS) and to all subsequent releases and modifications untilotherwise indicated in new editions.

Last updated: 2020-06-23© Copyright International Business Machines Corporation 1991, 2020.US Government Users Restricted Rights – Use, duplication or disclosure restricted by GSA ADP Schedule Contract withIBM Corp.

Contents

Figures............................................................................................................... xxi

Tables.............................................................................................................. xxiii

About this information......................................................................................xxviiWho should use this information............................................................................................................xxviiMVS workload management...................................................................................................................xxviiz/OS information..................................................................................................................................... xxviiHow to read syntax conventions............................................................................................................ xxvii

How to send your comments to IBM................................................................... xxxiIf you have a technical problem.............................................................................................................. xxxi

Summary of changes....................................................................................... xxxiiiSummary of changes for z/OS MVS Initialization and Tuning Reference for Version 2 Release 4

(V2R4)............................................................................................................................................... xxxiiiSummary of changes for z/OS Version 2 Release 3 (V2R3)................................................................. xxxviSummary of changes for z/OS Version 2 Release 2 (V2R2) as updated December 2016.................xxxviiiSummary of changes for z/OS Version 2 Release 2 (V2R2) as updated September 2016................xxxviiiSummary of changes for z/OS Version 2 Release 2 (V2R2) as updated March 2016........................xxxviiiSummary of changes for z/OS Version 2 Release 2 (V2R2) as updated December 2015...................xxxixSummary of changes for z/OS Version 2 Release 2 (V2R2)................................................................. xxxix

Part 1. Overview....................................................................................................1

Chapter 1. System tailoring......................................................................................................................... 3MVS hardware configuration definition..................................................................................................3System tailoring at initialization time.....................................................................................................3

Types of IPL.......................................................................................................................................4Operator entry of parameters...........................................................................................................5Description and use of the parmlib concatenation.......................................................................... 6Specifying an alternate nucleus....................................................................................................... 8Specifying an alternate master (system) catalog.............................................................................8

Understanding the master scheduler job control language..................................................................9Where does the master JCL reside?.................................................................................................9Changing the master scheduler JCL.................................................................................................9Setting up started tasks with the Master JCL................................................................................ 11Writing your own master scheduler JCL........................................................................................ 12

Overview of parmlib members.............................................................................................................14Implicit system parameters.................................................................................................................24Managing system security — APF-authorized library list.................................................................... 25

Choosing an APF list format........................................................................................................... 25Specifying the APF list.................................................................................................................... 26

Assigning the RACF TRUSTED attribute.............................................................................................. 27Specifying installation exits................................................................................................................. 28Specifying LNKLST concatenations..................................................................................................... 28

Chapter 2. Sharing parmlib definitions..................................................................................................... 29Objectives for sharing parmlib............................................................................................................. 29

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What are system symbols?.................................................................................................................. 29Static system symbols....................................................................................................................31Dynamic system symbols............................................................................................................... 32Symbols reserved for system use.................................................................................................. 34

Setting up a shared parmlib................................................................................................................. 34Step 1. Plan to share parmlib members.........................................................................................35Step 2. Determine where to specify system parameters.............................................................. 37Step 3. Determine where to specify the system name..................................................................39Step 4. Create an IEASYMxx parmlib member.............................................................................. 39Step 5. Code support for system symbols in LOADxx................................................................... 44

Using system symbols in parmlib........................................................................................................ 45Step 1. Know the rules for using system symbols in parmlib........................................................45Step 2. Determine where to use system symbols in parmlib........................................................48Step 3. Verify system symbols in parmlib......................................................................................49

Changing system symbols....................................................................................................................49Displaying static system symbols........................................................................................................53Diagnosing problems with static system symbols.............................................................................. 53Indirect volume serial support.............................................................................................................53Using indirect volume serial support................................................................................................... 54

Restrictions..................................................................................................................................... 55

Part 2. Members of SYS1.PARMLIB...................................................................... 57

Chapter 3. ADYSETxx (dump suppression)...............................................................................................59Parameter in IEASYSxx (or supplied by the operator)........................................................................ 59Syntax rules for ADYSETxx...................................................................................................................59Syntax format of ADYSETxx................................................................................................................. 60IBM-supplied defaults for ADYSETxx.................................................................................................. 60Statements and parameters for ADYSETxx.........................................................................................60

Chapter 4. ALLOCxx (allocation system defaults).................................................................................... 65Parameter in IEASYSxx (or supplied by the operator)........................................................................ 65Syntax rules for ALLOCxx..................................................................................................................... 65Syntax format of ALLOCxx....................................................................................................................66Syntax example of ALLOCxx................................................................................................................ 67IBM-supplied default for ALLOCxx...................................................................................................... 68Statements and parameters for ALLOCxx........................................................................................... 68

Chapter 5. ANTMIN00 (ANTMAIN control parameters)...........................................................................85

Chapter 6. ANTXIN00 (XRC services)....................................................................................................... 87

Chapter 7. APPCPMxx (define APPC/MVS configuration).........................................................................89Changing values....................................................................................................................................89Parameter in IEASYSxx (or supplied by the operator)........................................................................ 89Syntax rules for APPCPMxx..................................................................................................................89Syntax format of APPCPMxx................................................................................................................ 90IBM-supplied default for APPCPMxx...................................................................................................90Statements and parameters for APPCPMxx........................................................................................90Response to errors in APPCPMxx........................................................................................................ 94

Chapter 8. ASCHPMxx (APPC/MVS transaction scheduler)......................................................................95Changing values....................................................................................................................................95Default values.......................................................................................................................................95Support for system symbols................................................................................................................ 95Parameter in IEASYSxx (or supplied by the operator)........................................................................ 95Syntax rules for ASCHPMxx................................................................................................................. 96

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Syntax format of ASCHPMxx................................................................................................................96IBM-supplied default for ASCHPMxx...................................................................................................96Statements and parameters for ASCHPMxx........................................................................................96

Chapter 9. AUTORxx (auto-reply policy specifications)......................................................................... 101Parameter in IEASYSxx (or supplied by the operator)......................................................................101Syntax rules for AUTORxx..................................................................................................................101Syntax format of AUTORxx................................................................................................................ 101Syntax example of AUTORxx............................................................................................................. 101IBM-supplied default for AUTORxx................................................................................................... 102Statements and parameters for AUTORxx........................................................................................ 102

Chapter 10. AXRxx (system REXX options)............................................................................................ 105Parameter in IEASYSxx (or supplied by the operator)......................................................................105Syntax rules for AXRxx.......................................................................................................................105Syntax format of AXRxx..................................................................................................................... 105IBM-supplied default for AXRxx........................................................................................................ 105Statements and parameters for AXRxx............................................................................................. 105

Chapter 11. BLSCECT (formatting exits for dump and trace analysis).................................................. 107Parameter in IEASYSxx (or supplied by the operator)......................................................................107Syntax rules for BLSCECT.................................................................................................................. 107IBM-supplied default for BLSCECT....................................................................................................107Statements and parameters for BLSCECT........................................................................................ 107

Chapter 12. BLSCUSER (installation customization for dump and trace analysis)............................... 109Parameter in IEASYSxx (or issued by the operator)......................................................................... 109Syntax rules for BLSCUSER................................................................................................................109Syntax format of BLSCUSER.............................................................................................................. 110IBM-supplied default for BLSCUSER.................................................................................................110Statements and parameters for BLSCUSER, BLSCECT, and embedded parmlib members............ 111

Chapter 13. BPXPRMxx (z/OS UNIX System Services parameters).......................................................121Syntax rules for BPXPRMxx............................................................................................................... 121Syntax format of BPXPRMxx..............................................................................................................123Syntax example of BPXPRMxx...........................................................................................................124IBM-supplied default for BPXPRMxx.................................................................................................126Statements and parameters for BPXPRMxx......................................................................................126

Chapter 14. CEAPRMxx (common event adapter parameters)..............................................................159Syntax rules for CEAPRMxx............................................................................................................... 159Syntax format of CEAPRMxx.............................................................................................................. 159IBM-supplied defaults for CEAPRMxx...............................................................................................160Statements and parameters for CEAPRMxx......................................................................................160Examples of CEAPRMxx parmlib member.........................................................................................163

Chapter 15. CEEPRMxx (runtime option parameters)............................................................................165Parameter in IEASYSxx (or supplied by the operator)......................................................................165Syntax rules for CEEPRMxx................................................................................................................165Syntax format of CEEPRMxx.............................................................................................................. 166IBM-supplied default for CEEPRMxx.................................................................................................166Statements and parameters for CEEPRMxx......................................................................................166Example of CEEPRMxx parmlib member...........................................................................................167

Chapter 16. CLOCKxx (time of day parameters).....................................................................................171Parameter in IEASYSxx (or supplied by the operator)......................................................................171Syntax rules for CLOCKxx.................................................................................................................. 171Syntax format of CLOCKxx................................................................................................................. 172

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IBM-supplied default for CLOCKxx....................................................................................................172Statements and parameters for CLOCKxx.........................................................................................172

Chapter 17. CNGRPxx (specify console groups).....................................................................................177Console groups in a sysplex...............................................................................................................177Selecting a CNGRPxx member...........................................................................................................177Syntax rules for CNGRPxx..................................................................................................................177Syntax format of CNGRPxx................................................................................................................ 177IBM-supplied default for CNGRPxx................................................................................................... 178Statement and parameters for CNGRPxx..........................................................................................178

Chapter 18. CNLcccxx (time and date format for translated messages)...............................................179Restrictions for CNLcccxx.................................................................................................................. 179Parameter in IEASYSxx (or supplied by the operator)......................................................................179Selecting a CNLcccxx member.......................................................................................................... 179Syntax rules for CNLcccxx................................................................................................................. 180Syntax format of CNLcccxx................................................................................................................ 180Syntax example of CNLcccxx.............................................................................................................180Statements and parameters for CNLcccxx........................................................................................181

Chapter 19. COFDLFxx (hiperbatch parameters)................................................................................... 185Parameter in IEASYSxx (or issued by the operator)......................................................................... 185Syntax rules for COFDLFxx.................................................................................................................185Syntax format of COFDLFxx............................................................................................................... 186Starting DLF........................................................................................................................................186Statements and parameters for COFDLFxx.......................................................................................186

Chapter 20. COFVLFxx (virtual lookaside facility parameters).............................................................. 187Collecting VLF statistics.....................................................................................................................188Parameter in IEASYSxx (or issued by the operator)......................................................................... 188Syntax rules for COFVLFxx.................................................................................................................188Syntax format of COFVLFxx............................................................................................................... 189Starting VLF........................................................................................................................................ 189Statements and parameters for COFVLFxx....................................................................................... 189

Chapter 21. COMMNDxx (commands automatically issued at initialization)........................................ 191Parameter in IEASYSxx (or issued by the operator)......................................................................... 191Support for system symbols.............................................................................................................. 192Syntax rules for COMMNDxx..............................................................................................................192IBM-supplied default for COMMNDxx............................................................................................... 192Statements and parameters for COMMNDxx.................................................................................... 192

Chapter 22. CONFIGxx (standard configuration list)..............................................................................193Comparing the current and standard configurations........................................................................ 193

Matching configurations............................................................................................................... 193Nonmatching configurations........................................................................................................ 193Error in CONFIGxx statement...................................................................................................... 193

Reconfiguring system elements........................................................................................................ 194Parameter in IEASYSxx:.....................................................................................................................194Syntax rules for CONFIGxx................................................................................................................ 194IBM-supplied default for CONFIGxx................................................................................................. 194Statements and parameters for CONFIGxx...................................................................................... 195

Chapter 23. CONSOLxx (console configuration definition).................................................................... 201Using CONSOLxx in a sysplex............................................................................................................ 201Related members of parmlib............................................................................................................. 202Related commands............................................................................................................................ 202CONSOLE statement.......................................................................................................................... 203

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INIT statement...................................................................................................................................203HARDCOPY statement....................................................................................................................... 204DEFAULT statement........................................................................................................................... 204Parameter in IEASYSxx (or supplied by the operator)......................................................................205Syntax rules for CONSOLxx................................................................................................................205IBM-supplied default for CONSOLxx.................................................................................................206Statements and parameters for CONSOLxx......................................................................................206

Syntax and parameters for the CONSOLE statement..................................................................206Syntax and parameters for the DEFAULT statement...................................................................218Syntax and parameters for the HARDCOPY statement...............................................................220Syntax and parameters for an INIT statement............................................................................222

Devices used as MCS consoles..........................................................................................................226Maximum and default specifications for AREA and SEG.................................................................. 227

Chapter 24. COUPLExx (cross-system coupling facility (XCF) parameters)..........................................229Parameter in IEASYSxx (or supplied by the operator)......................................................................229Syntax rules for COUPLExx................................................................................................................ 229Syntax format of COUPLExx...............................................................................................................230IBM-supplied default for COUPLExx................................................................................................. 230Statements and parameters for COUPLExx...................................................................................... 230

Chapter 25. CSVLLAxx (library lookaside (LLA) list)............................................................................... 243Starting LLA........................................................................................................................................ 243Parameter in IEASYSxx (or supplied by the operator)......................................................................243Syntax rules for CSVLLAxx................................................................................................................. 243Syntax format of CSVLLAxx................................................................................................................244IBM-supplied default for CSVLLAxx.................................................................................................. 244Statements and parameters for CSVLLAxx....................................................................................... 244

Chapter 26. CTncccxx (component trace parameters).......................................................................... 249Tracing of MVS components.............................................................................................................. 249Tracing of installation-provided applications....................................................................................249Parameter in IEASYSxx (or supplied by the operator)......................................................................249Syntax rules for CTncccxx..................................................................................................................249Syntax examples................................................................................................................................ 250Syntax format of CTncccxx................................................................................................................ 251IBM-supplied default for CTncccxx................................................................................................... 251Statements and parameters for CTncccxx........................................................................................251

Chapter 27. CUNUNIxx (Unicode Services environment)...................................................................... 255Selecting a CUNUNIxx member.........................................................................................................255Parameter in IEASYSxx......................................................................................................................255Syntax rules for CUNUNIxx................................................................................................................255Syntax format of CUNUNIxx.............................................................................................................. 256IBM-supplied default for CUNUNIxx................................................................................................. 256Statements and parameters for CUNUNIxx...................................................................................... 256Samples for parmlib member CUNUNIxx......................................................................................... 265

Chapter 28. DEVSUPxx (device support options)................................................................................... 267Enhanced security for tape data sets................................................................................................ 267Parameter in IEASYSxx (or issued by the operator)......................................................................... 268Syntax rules for DEVSUPxx................................................................................................................ 269Syntax format of DEVSUPxx...............................................................................................................269IBM-supplied defaults for DEVSUPxx................................................................................................270Statements and parameters for DEVSUPxx...................................................................................... 271

Volume partitioning parameters.................................................................................................. 288

Chapter 29. DFHSSIxx (message-formatting initialization member).................................................... 291

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Chapter 30. DIAGxx (control common storage tracking and GFS trace)...............................................293Specifying the DIAGxx members.......................................................................................................293Parameter in IEASYSxx (or specified by the operator)..................................................................... 294Syntax rules for DIAGxx.....................................................................................................................294Syntax format of DIAGxx................................................................................................................... 294IBM-supplied default for DIAGxx...................................................................................................... 295Statements and parameters for DIAGxx........................................................................................... 295

Chapter 31. EXITxx (allocation installation exit list).............................................................................. 307Parameter in IEASYSxx (or issued by the operator)......................................................................... 307Syntax rules for EXITxx......................................................................................................................308Syntax format of EXITxx.................................................................................................................... 308IBM-supplied default for EXITxx....................................................................................................... 308Statements and parameters for EXITxx............................................................................................ 308

Chapter 32. EXSPATxx (excessive spin condition actions).................................................................... 309Parameter in IEASYSxx (or issued by the operator)......................................................................... 309Syntax rules for EXSPATxx.................................................................................................................309Syntax example of EXSPATxx............................................................................................................ 309IBM-supplied default for EXSPATxx..................................................................................................310Statements and parameters for EXSPATxx.......................................................................................310Example of EXSPATxx........................................................................................................................ 311

Chapter 33. FXEPRMxx (IBM Function Registry for z/OS)......................................................................313Parameter in IEASYSxx (or issued by the operator)......................................................................... 313Syntax rules for FXEPRMxx................................................................................................................313Syntax format of FXEPRMxx.............................................................................................................. 313IBM-supplied default for FXEPRMxx................................................................................................. 313Statements and parameters for FXEPRMxx...................................................................................... 313

Chapter 34. GRSCNFxx (global resource serialization configuration)................................................... 315Parameters in IEASYSxx.................................................................................................................... 316Syntax rules for GRSCNFxx................................................................................................................316IBM-supplied default for GRSCNFxx................................................................................................. 317Statements and parameters for GRSCNFxx...................................................................................... 317

Chapter 35. GRSMONxx (global resource serialization monitor)........................................................... 321Parameters in IEASYSxx.................................................................................................................... 321Syntax rules for GRSMONxx...............................................................................................................321Syntax format of GRSMONxx............................................................................................................. 322IBM-supplied default for GRSMONxx................................................................................................323Statements and parameters for GRSMONxx.....................................................................................323

Chapter 36. GRSRNLxx (global resource serialization resource name lists).........................................327Parameter in IEASYSxx (or supplied by the operator)......................................................................327Support for system symbols.............................................................................................................. 327Syntax rules for GRSRNLxx................................................................................................................327IBM-supplied default for GRSRNLxx................................................................................................. 329Statements and parameters for GRSRNLxx...................................................................................... 329

Chapter 37. GTFPARM (generalized trace facility parameters)............................................................. 331Parameter in IEASYSxx (or issued by the operator)......................................................................... 331Syntax rules for GTFPARM................................................................................................................. 331IBM-supplied default for GTFPARM.................................................................................................. 333Statements and parameters for GTFPARM....................................................................................... 333

Chapter 38. GTZPRMxx (Generic Tracker parameters)..........................................................................335

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Parameters in IEASYSxx (or supplied by the operator).................................................................... 335Syntax rules for GTZPRMxx............................................................................................................... 335Syntax format of GTZPRMxx.............................................................................................................. 336IBM-supplied default for GTZPRMxx.................................................................................................336Statements and parameters for GTZPRMxx......................................................................................336

Chapter 39. HZSPRMxx (manage IBM Health Checker for z/OS checks).............................................. 347

Chapter 40. IDAVDTxx (VSAM dynamic trace parameters)................................................................... 349Syntax rules for IDAVDTxx.................................................................................................................349Syntax format for IDAVDTxx..............................................................................................................349IBM-supplied defaults for IDAVDTxx................................................................................................ 349Statements and parameters for IDAVDTxx.......................................................................................349Examples of IDAVDTxx parmlib member..........................................................................................350

Chapter 41. IEAABD00 (ABDUMP written to a SYSABEND data set).................................................... 351Parameter in IEASYSxx (or specified by the operator)..................................................................... 351Syntax rules for IEAABD00................................................................................................................351IBM-supplied default for IEAABD00................................................................................................. 352Statements and parameters for IEAABD00...................................................................................... 352

Chapter 42. IEAAPFxx (authorized program facility list)........................................................................355Parameter in IEASYSxx (or supplied by the operator)......................................................................356Syntax rules for IEAAPFxx................................................................................................................. 356IBM-supplied default for IEAAPFxx.................................................................................................. 356Statements and parameters for IEAAPFxx....................................................................................... 357

Chapter 43. IEAAPP00 (authorized I/O appendage routines)............................................................... 359Syntax rules for IEAAPP00................................................................................................................ 359IBM-supplied default for IEAAPP00................................................................................................. 359Statements and parameters for IEAAPP00...................................................................................... 359

Chapter 44. IEACMD00 (IBM-supplied commands).............................................................................. 361Parameter in IEASYSxx (or supplied by the operator)......................................................................362Syntax rules for IEACMD00............................................................................................................... 362IBM-supplied default for IEACMD00.................................................................................................362Statements and parameters for IEACMD00......................................................................................362

Chapter 45. IEADMCxx (DUMP command parmlib)............................................................................... 363Performance implications..................................................................................................................363Syntax rules for IEADMCxx................................................................................................................ 363Syntax format of IEADMCxx...............................................................................................................363IBM-supplied default for IEADMCxx................................................................................................. 363Statements and parameters for IEADMCxx...................................................................................... 363

Chapter 46. IEADMP00 (ABDUMP written to a SYSUDUMP data set)................................................... 367Parameter in IEASYSxx (or specified by the operator)..................................................................... 367Syntax rules for IEADMP00............................................................................................................... 367IBM-supplied default for IEADMP00.................................................................................................367Statements and parameters for IEADMP00......................................................................................368

Chapter 47. IEADMR00 (ABDUMP written to a SYSMDUMP data set)...................................................371Recommendation for IEADMR00 with z/OS UNIX............................................................................ 371Parameter in IEASYSxx (or specified by the operator)..................................................................... 371Syntax rules for IEADMR00............................................................................................................... 371IBM-supplied default for IEADMR00.................................................................................................372Statements and parameters for IEADMR00..................................................................................... 372

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Chapter 48. IEAFIXxx (fixed LPA list)..................................................................................................... 373Parameter in IEASYSxx (or specified by the operator)..................................................................... 373Syntax rules for IEAFIXxx.................................................................................................................. 374Syntax format of IEAFIXxx.................................................................................................................374Syntax example of IEAFIXxx............................................................................................................. 374IBM-supplied default for IEAFIXxx................................................................................................... 374Statements and parameters for IEAFIXxx........................................................................................ 375

Chapter 49. IEALPAxx (modified LPA list)...............................................................................................377Parameter in IEASYSxx (or supplied by the operator)......................................................................377Syntax rules for IEALPAxx..................................................................................................................378Syntax format of IEALPAxx................................................................................................................ 378Syntax example of IEALPAxx.............................................................................................................378IBM-supplied default for IEALPAxx...................................................................................................378Statements and parameters for IEALPAxx........................................................................................379

Chapter 50. IEAOPTxx (OPT parameters)...............................................................................................381Syntax rules for IEAOPTxx.................................................................................................................382IBM-supplied default for IEAOPTxx.................................................................................................. 382Statements and parameters for IEAOPTxx....................................................................................... 382

Chapter 51. IEAPAKxx (LPA pack list).....................................................................................................397Parameter in IEASYSxx (or supplied by the operator)......................................................................397Syntax rules for IEAPAKxx................................................................................................................. 397IBM-supplied default for IEAPAKxx.................................................................................................. 398Statements and parameters for IEAPAKxx....................................................................................... 398

Chapter 52. IEASLPxx (SLIP commands)............................................................................................... 399Parameter in IEASYSxx (or supplied by the operator)......................................................................399Syntax rules for IEASLPxx..................................................................................................................399IBM-supplied default for IEASLPxx...................................................................................................400Using system commands...................................................................................................................400

Chapter 53. IEASVCxx (installation-defined SVCs)................................................................................ 403Parameter in IEASYSxx (or entered by the operator)....................................................................... 403Syntax rules for IEASVCxx................................................................................................................. 403Syntax examples of IEASVCxx...........................................................................................................403IBM-supplied default for IEASVCxx.................................................................................................. 403Statements and parameters for IEASVCxx....................................................................................... 403

Chapter 54. IEASYMxx (symbol definitions and IEASYSxx members).................................................. 407Parameter in LOADxx:........................................................................................................................ 407Performance implications..................................................................................................................407Syntax rules for IEASYMxx................................................................................................................ 407Syntax format of IEASYMxx............................................................................................................... 408IBM-supplied default for IEASYMxx..................................................................................................408Statements and parameters for IEASYMxx.......................................................................................408

Chapter 55. IEASYSxx (system parameter list)......................................................................................415Overview of IEASYSxx parameters....................................................................................................415Changes to initialization parameters.................................................................................................420Support for system symbols.............................................................................................................. 420Parameter specified by the operator.................................................................................................421Syntax rules for IEASYSxx................................................................................................................. 421IBM-supplied default for IEASYSxx...................................................................................................421Specifying the list option for IEASYSxx parameters......................................................................... 421Statements and parameters for IEASYSxx........................................................................................422

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ALLOC............................................................................................................................................422APF................................................................................................................................................ 422AUTOR...........................................................................................................................................423AXR................................................................................................................................................423BOOST...........................................................................................................................................423CATALOG.......................................................................................................................................424CEA................................................................................................................................................424CEE................................................................................................................................................ 424CLOCK........................................................................................................................................... 425CLPA.............................................................................................................................................. 425CMB...............................................................................................................................................426CMD...............................................................................................................................................427CON............................................................................................................................................... 427COUPLE......................................................................................................................................... 428CSA................................................................................................................................................428CSCBLOC.......................................................................................................................................429CVIO.............................................................................................................................................. 429DEVSUP.........................................................................................................................................430DIAG..............................................................................................................................................430DRMODE........................................................................................................................................430DUMP............................................................................................................................................ 430EXIT...............................................................................................................................................432FIX.................................................................................................................................................432FXE................................................................................................................................................ 433GRS................................................................................................................................................433GRSCNF.........................................................................................................................................434GRSRNL.........................................................................................................................................434GTZ................................................................................................................................................434HVCOMMON..................................................................................................................................435HVSHARE...................................................................................................................................... 435HZS................................................................................................................................................436HZSPROC...................................................................................................................................... 436ICSF...............................................................................................................................................436ICSFPROC..................................................................................................................................... 437IEFOPZ.......................................................................................................................................... 437IKJTSO.......................................................................................................................................... 437IOS................................................................................................................................................ 437IQP................................................................................................................................................ 438IXGCNF......................................................................................................................................... 438IZU.................................................................................................................................................438LFAREA..........................................................................................................................................439LICENSE........................................................................................................................................ 443LNK................................................................................................................................................443LNKAUTH...................................................................................................................................... 443LOGCLS......................................................................................................................................... 443LOGLMT.........................................................................................................................................444LOGREC.........................................................................................................................................444LPA................................................................................................................................................ 446MAXCAD........................................................................................................................................ 446MAXUSER......................................................................................................................................446MLPA............................................................................................................................................. 447MSTRJCL....................................................................................................................................... 448NONVIO........................................................................................................................................ 448NSYSLX......................................................................................................................................... 449OMVS.............................................................................................................................................450OPI................................................................................................................................................ 451OPT................................................................................................................................................451OSPROTECT.................................................................................................................................. 452

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PAGE............................................................................................................................................. 452PAGESCM...................................................................................................................................... 455PAGTOTL....................................................................................................................................... 456PAK................................................................................................................................................457PLEXCFG....................................................................................................................................... 457PRESCPU.......................................................................................................................................458PROD............................................................................................................................................. 458PROG.............................................................................................................................................459RACF..............................................................................................................................................460RDE................................................................................................................................................460REAL..............................................................................................................................................460RER................................................................................................................................................461RSU................................................................................................................................................461RSVNONR......................................................................................................................................463RSVSTRT....................................................................................................................................... 464RUCSA........................................................................................................................................... 464SCH................................................................................................................................................465SMF............................................................................................................................................... 466SMFTBUFF ................................................................................................................................... 466SMS............................................................................................................................................... 466SQA................................................................................................................................................466SSN................................................................................................................................................468SVC................................................................................................................................................ 469SYSNAME...................................................................................................................................... 469SYSP..............................................................................................................................................470UNI................................................................................................................................................ 470VAL................................................................................................................................................ 471VIODSN......................................................................................................................................... 471VRREGN........................................................................................................................................ 472WARNUND.................................................................................................................................... 472ZAAPZIIP...................................................................................................................................... 472

Chapter 56. IECIOSxx (I/O related parameters).................................................................................... 475Parameter in IEASYSxx (or specified by the operator)..................................................................... 475IBM-supplied default for IECIOSxx...................................................................................................476Syntax rules for IECIOSxx..................................................................................................................476Missing interrupt handler (MIH)........................................................................................................ 476

I/O timing...................................................................................................................................... 477Interaction of MIH and I/O timing processing.............................................................................478I/O timing trigger for HyperSwap................................................................................................. 478Statements and parameters for MIH........................................................................................... 479

Hot I/O (HOTIO)................................................................................................................................. 484Options for HOTIO recovery.........................................................................................................485

TERMINAL.......................................................................................................................................... 486CTRACE...............................................................................................................................................487FICON................................................................................................................................................. 487STORAGE............................................................................................................................................488CAPTUCB............................................................................................................................................ 488MIDAW................................................................................................................................................488HYPERPAV.......................................................................................................................................... 488HYPERWRITE..................................................................................................................................... 489EKM.....................................................................................................................................................489RECOVERY ......................................................................................................................................... 492

DCCF usage...................................................................................................................................492Limited recovery time...................................................................................................................492Path recovery................................................................................................................................ 493Statements and parameters for RECOVERY ............................................................................... 494Syntax example............................................................................................................................ 495

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ZHPF................................................................................................................................................... 495SPOF................................................................................................................................................... 495ZHYPERLINK...................................................................................................................................... 496Syntax examples for IECIOSxx..........................................................................................................496

Chapter 57. IEFOPZxx (data set optimization configuration)................................................................ 499Parameter in IEASYSxx (or supplied by the operator)......................................................................499Syntax rules for IEFOPZxx................................................................................................................. 499Syntax format of IEFOPZxx................................................................................................................499IBM-supplied default for IEFOPZxx.................................................................................................. 500Statements and parameters for IEFOPZxx....................................................................................... 500Usage notes for IEFOPZxx................................................................................................................. 506

Chapter 58. IEFSSNxx (subsystem definitions) - keyword parameter form......................................... 507Restrictions for IEFSSNxx..................................................................................................................507Parameter in IEASYSxx (or supplied by the operator)......................................................................508Syntax rules for IEFSSNxx................................................................................................................. 509IBM-supplied default for IEFSSNxx.................................................................................................. 509Statements and parameters for IEFSSNxx....................................................................................... 509Examples of IEFSSNxx member........................................................................................................ 511

Chapter 59. IFAPRDxx (product enablement policy)............................................................................. 513Before creating the member..............................................................................................................513Usage considerations.........................................................................................................................514Parameter in IEASYSxx (or issued by the operator)......................................................................... 514Syntax rules for IFAPRDxx................................................................................................................. 514Syntax format of IFAPRDxx................................................................................................................515IBM-supplied default for IFAPRDxx.................................................................................................. 515Statements and parameters for IFAPRDxx....................................................................................... 515Examples of IAFAPRDxx statements.................................................................................................519

Chapter 60. IFGPSEDI (enhanced data integrity)...................................................................................521Syntax rules for IFGPSEDI................................................................................................................. 521Syntax examples................................................................................................................................ 521Syntax format of IFGPSEDI................................................................................................................521IBM-supplied default for IFGPSEDI.................................................................................................. 521Statements and parameters for IFGPSEDI....................................................................................... 522

Chapter 61. IGDSMSxx (storage management subsystem definition).................................................. 523Parameter in IEASYSxx......................................................................................................................523Defining SMS through the IEFSSNxx member.................................................................................. 523

Example of an SMS record in IEFSSNxx...................................................................................... 524Starting SMS - at IPL and afterward.................................................................................................. 525Specifying SMS parameters through SETSMS and SET SMS............................................................ 525Syntax rules for IGDSMSxx................................................................................................................ 525Syntax format of IGDSMSxx...............................................................................................................525IBM-supplied default for IGDSMSxx................................................................................................. 527Required keywords for IGDSMSxx.................................................................................................... 527Optional keywords for IGDSMSxx..................................................................................................... 527Examples of the contents of IGDSMSxx............................................................................................551Examples of specifying DFSMStvs parameters.................................................................................552

Chapter 62. IGGCATxx (DFSMS catalog configuration)..........................................................................555Parameter in IEASYSxx (or specified by the operator)..................................................................... 555Syntax rules for IGGCATxx................................................................................................................ 555Syntax format of IGGCATxx............................................................................................................... 556Statements and parameters for IGGCATxx.......................................................................................556

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Chapter 63. IKJTSOxx (TSO/E commands and programs).................................................................... 561Parameter in IEASYSxx (or specified by the operator)..................................................................... 561Selecting the IKJTSOxx member.......................................................................................................561Syntax rules for IKJTSOxx................................................................................................................. 562Syntax format of IKJTSOxx................................................................................................................563IBM-supplied default for IKJTSOxx.................................................................................................. 563Statements and parameters for IKJTSOxx....................................................................................... 563

Chapter 64. IOEPRMxx (z/OS Distributed File Service z/OS File System parameters)......................... 575Specifying the IOEPRMxx concatenation.......................................................................................... 575Syntax rules for IOEPRMxx................................................................................................................ 576

Chapter 65. IPCSPRnn (Interactive Problem Control System).............................................................. 577Parameter in IEASYSxx (or specified by the operator)..................................................................... 577Syntax rules for IPCSPRnn.................................................................................................................577IBM-supplied default for IPCSPRnn..................................................................................................577Statements and parameters for IPCSPRnn.......................................................................................577

Chapter 66. IQPPRMxx (PCIE related parameters)................................................................................581Parameter in IEASYSxx (or specified by the operator)..................................................................... 581Syntax rules for IQPPRMxx................................................................................................................581Statements and parameters for IQPPRMxx...................................................................................... 581

Chapter 67. IRRPRMxx (RACF parameters)............................................................................................583IBM-supplied default for IRRPRMxx................................................................................................. 583

Chapter 68. IVTPRM00 (Communication Storage Manager)................................................................. 585Parameter in IEASYSxx (or supplied by the operator)......................................................................585Syntax format of IVTPRM00.............................................................................................................. 585Syntax rules for IVTPRM00................................................................................................................585IBM-supplied defaults for IVTPRM00............................................................................................... 585Statements and parameters for IVTPRM00......................................................................................585

Chapter 69. IXGCNFxx (system logger initialization parameters)......................................................... 589Specifying the IXGCNFxx members...................................................................................................589Related members in parmlib............................................................................................................. 590Parameter in IEASYSxx (or supplied by the operator)......................................................................590Syntax rules for IXGCNFxx.................................................................................................................590IBM-supplied defaults for IXGCNFxx................................................................................................ 590Syntax format of IXGCNFxx............................................................................................................... 591Statements and parameters for IXGCNFxx.......................................................................................591Examples of IXGCNFxx member....................................................................................................... 599

Chapter 70. IZUPRMxx (configure IBM z/OS Management Facility)......................................................601

Chapter 71. LNKLSTxx (LNKLST concatenation).................................................................................... 603Using PROGxx to define LNKLST concatenations............................................................................. 603Using LNKLSTxx................................................................................................................................. 603Parameter in IEASYSxx (or supplied by the operator)......................................................................603Syntax rules for LNKLSTxx.................................................................................................................603Syntax format of LNKLSTxx............................................................................................................... 604Syntax example of LNKLSTxx............................................................................................................ 604IBM-supplied default for LNKLSTxx.................................................................................................. 604IBM-supplied sample for LNKLSTxx..................................................................................................604

Chapter 72. LOADxx (system configuration data sets).......................................................................... 605Placement of LOADxx........................................................................................................................ 605

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Copying LOADxx members................................................................................................................ 606Filtering with LOADxx.........................................................................................................................606

Filtering example.......................................................................................................................... 607Parameter in IEASYSxx (or supplied by the operator)......................................................................609Support for system symbols.............................................................................................................. 609Syntax rules for LOADxx.................................................................................................................... 609Syntax format of LOADxx................................................................................................................... 609IBM-supplied default for LOADxx......................................................................................................610Statements and parameters for LOADxx...........................................................................................610Example of parmlib concatenation....................................................................................................625

Chapter 73. LPALSTxx (LPA library list).................................................................................................. 627Parameter in IEASYSxx (or supplied by the operator)......................................................................627Syntax rules for LPALSTxx................................................................................................................. 627Syntax format of LPALSTxx................................................................................................................ 628Syntax example of LPALSTxx.............................................................................................................628IBM-supplied default for LPALSTxx...................................................................................................629Statements and parameters for LPALSTxx........................................................................................629

Chapter 74. MMSLSTxx (MVS message service list)...............................................................................631Selecting an MMSLSTxx member...................................................................................................... 631Parameter in IEASYSxx......................................................................................................................631Sample MMSLSTxx member.............................................................................................................. 631Syntax rules for MMSLSTxx................................................................................................................631Syntax format of MMSLSTxx.............................................................................................................. 631Syntax example for MMSLSTxx..........................................................................................................632IBM-supplied default for MMSLSTxx.................................................................................................632Statements and parameters for MMSLSTxx......................................................................................632

Chapter 75. MPFLSTxx (message processing facility list)......................................................................635Parameter in IEASYSxx......................................................................................................................635Syntax rules for MPFLSTxx................................................................................................................ 635Selecting MPFLSTxx members.......................................................................................................... 636IBM-supplied MPFLSTxx member.....................................................................................................636Controlling message presentation through MPFLSTxx.....................................................................636

Syntax for controlling message presentation.............................................................................. 636IBM-supplied defaults for .MSGCOLR..........................................................................................636Displaying the message presentation attributes for the current MPFLSTxx.............................. 637MPFLSTxx parameters for controlling message presentation.................................................... 637

Controlling message management....................................................................................................639Specifying message management............................................................................................... 639Syntax for controlling message management............................................................................. 640IBM-supplied defaults for message management...................................................................... 641Listing the message processing attributes for the current MPFLSTxx........................................641Using other methods to suppress messages...............................................................................641

Controlling foreign message management....................................................................................... 641Syntax for controlling message management............................................................................. 641Syntax rules for the .FORNSSI statement....................................................................................642IBM-supplied defaults for foreign message management..........................................................642Displaying the foreign message processing attributes for the current MPFLSTxx.....................642MPFLSTxx parameters for managing for