sql for the system administrator - gateway/400 group · pdf filesql for the system...

© 2015 IBM Corporation1 SQL for the System Admin

Power Systems 2015

SQL for the System Administrator

Scott [email protected]

DB2 for i Business Architect

For…


Commands, APIs and tools – consider the options

• IBM i has a long history of creating Commands and APIs, so much so that we frequently conclude that further investment in these interfaces is the appropriate approach to deliver new capabilities to our customers

• The subject of this presentation is to explain the role of SQL based interfaces to allow non-DB2 for i products and components to understand that an alternative / additional choice exists

• Development Cost, Value to the customer and Risk are the important factors to consider for any enhancement


Commands, APIs and tools – Why consider SQL?

• Even though IBM i customers are used to commands and APIs, they are not always the easiest interfaces for customers to utilize (especially if from a client or the web).

• In many cases, customers are required to write specialized programs to exploit a new IBM i command or API.

• Across the industry, SQL is recognized as a standardized and easy language to access the database. SQL skills are either commonplace or customers have a desire to do more with SQL.

• SQL as a language construct does not need to be limited to database topics.

• SQL can be used on IBM i to easily extract deep details on non-database topics. This presentation contains proof of this point.


Commands, APIs and tools – Why consider SQL?

• With SQL-based options, consider which interface provides the best “tool for the task”

• Customer feedback SQL based interfaces has been very positive

• Besides being easy to use, SQL queries can be used for:

– Selection (WHERE clause)

– Ordering

– Grouping

– Joining

– Top ‘n’ results

– IN, LIKE, NOT, and more…

Unleash the power of the DB2 for i query engine


Where to start? Get educated

• Understand the SQL coding environments:RUNSQL, RUNSQLSTM, Run SQL Scripts, STRSQL, CRTSQLxxxx, ODBC, JDBC, PHP, DRDA, etc…

• Understand the query engine and optimizer options:

• Understand the SQL coding options:Explicit 3-part names, Implicit 3-part names, INSERT with remote subselect, CREATE TABLE with remote subselect, etc...

• Keep the SQL Reference close by

• Like other crafts… with repeated study and practice, your skills will improve


New to SQL? Use Navigator’s Run SQL Scripts

• Powerful, graphical interface

IBM i Navigator (aka System i Navigator)

IBM i Access Windows Service Pack

7.1 – SI53809 TR9 timed enhancements

Product Download Site:www-03.ibm.com/systems/power/software/i/access/windows_sp.html

Next Planned Update…June, 2015

Right click

http://www-03.ibm.com/systems/power/software/i/access/windows_sp.html


New to SQL? Use Navigator’s Run SQL Scripts

• Insert from Examples…

No need to start from scratch.

Save and reuse useful scripts.


SQL catalogs TCP/IP Services

TCP/IP Services


QSYS2.TCPIP_INFO – view

Client/server identification, logging and other instrumentation is possible using SQL.

The TCPIP_INFO view returns detailed information for the current connection.

SELECT * from QSYS2.TCPIP_INFO;

Columns which don’t exist on IBM i 6.1:

SERVER_IP_ADDRESS and SERVER_IP_ADDRESS_TYPE


TCPIP_INFO – example usage

• Well defined port numbers –http://www-01.ibm.com/support/knowledgecenter/ssw_ibm_i_72/rzajr/rzajrservicesandports.htm?lang=en

Now it’s possible (and easy) to deploy interface specific logic with SQL

http://www-01.ibm.com/support/knowledgecenter/ssw_ibm_i_72/rzajr/rzajrservicesandports.htm?lang=en

http://www-01.ibm.com/support/knowledgecenter/ssw_ibm_i_72/rzajr/rzajrservicesandports.htm?lang=en


TCPIP_INFO – Trigger example

This trigger can have conditional logic when running within a QZDASOINIT job.

Varies by the caller


SYSIBMADM.ENV_SYS_INFO – view

• SYSIBMADM/ENV_SYS_INFO catalog returns information about the current server

• This is a DB2 family compatible administrative view


SQL catalogs Program Temporary Fix (PTF)

PTF Services


Explore the catalog columns and detail…

SELECT * FROM QSYS2.GROUP_PTF_INFO;

QSYS2.GROUP_PTF_INFO – view


• Use SQL to interrogate PTF Group information• Alternative to the Work with PTF Groups (WRKPTFGRP) command• Since this command has no OUTPUT(*OUTFILE) capability, the command is not easily consumable from a program

-- What PTF Groups will change on the next IPL?SELECT * FROM QSYS2.GROUP_PTF_INFOWHERE PTF_GROUP_STATUS = ‘APPLY AT NEXT IPL’ORDER BY PTF_GROUP_LEVEL DESC;

-- What is the most recently installed CUM? SELECT MAX(PTF_GROUP_LEVEL) AS CUM_LEVEL FROM QSYS2.GROUP_PTF_INFOWHERE PTF_GROUP_NAME IN (‘SF99610’,‘SF99710’)AND PTF_GROUP_STATUS = ‘INSTALLED’;

QSYS2.GROUP_PTF_INFO – view


• Interrogate individual PTF information using SQL• Data returned is similar to the QpzListPTF() API output• Use SQL to formalize prerequisite checks within software products

-- I’m about to IPL, will the IPL impact PTF state?SELECT PTF_IDENTIFIER, PTF_IPL_ACTION, A.*FROM QSYS2.PTF_INFO AWHERE PTF_IPL_ACTION <> 'NONE‘;

QSYS2.PTF_INFO – view


-- Which PTFs are loaded, but not applied?SELECT PTF_IDENTIFIER, PTF_PRODUCT_DESCRIPTION, A.*FROM QSYS2.PTF_INFO AWHERE PTF_LOADED_STATUS = 'LOADED'ORDER BY PTF_PRODUCT_ID;

QSYS2.PTF_INFO – view

© 2015 IBM Corporation18

SYSTOOLS.GROUP_PTF_CURRENCY View

SELECT * from SYSTOOLS.GROUP_PTF_CURRENCYWHERE PTF_GROUP_RELEASE = ‘R720’ORDER BY ptf_group_level_available -ptf_group_level_installed DESC;

Current or

behind on

service?

PTF Group

Info

Level

installed

on this

partition

Level

available

from IBM

Date that

IBM last

updated

this group



http://www-912.ibm.com/s_dir/sline003.nsf/PSPbyNumL.xml?OpenView&count=500

XML

namespace

&

structure

http://www-912.ibm.com/s_dir/sline003.nsf/PSPbyNumL.xml?OpenView&count=500



Study the XML structure to define the data to the HTTP function.

HTTPXML document

structure

Developer

resources

TCP/IP Enablement:

‘www-912.ibm.com’ maps to 129.42.160.32

IBM i TCP/IP configuration Technote:http://www-01.ibm.com/support/docview.wss?uid=nas8N1018980

White papers:

• https://ibm.biz/XMLandDB2fori

• https://ibm.biz/HTTPandDB2fori

Enablement

http://www-01.ibm.com/support/docview.wss?uid=nas8N1018980

https://ibm.biz/XMLandDB2fori

https://ibm.biz/HTTPandDB2fori


SQL catalogs Journal Services

Journal Services


• Use SQL to retrieve detail for local & remote journals• Information from QjoRetrieveJournalInformation() API, RJRN0100 format.• The view returns Key 1 & 3 information, one row == information about one journal.

-- Which remote journals are the most heavily used?SELECT JOURNALED_OBJECTS, A.* FROM QSYS2.JOURNAL_INFO A WHERE NUMBER_REMOTE_JOURNALS > 0 AND JOURNALED_OBJECTS IS NOT NULL ORDER BY JOURNALED_OBJECTS DESC;-- Journals nearing the limit of journaled objects?SELECT * FROM QSYS2.JOURNAL_INFO WHERE JOURNALED_OBJECT_LIMIT = '*MAX250K' AND JOURNALED_OBJECTS > 200000;

QSYS2.JOURNAL_INFO – View


• Use this new source of information to achieve better journal management• Recognize conditions that require attention

-- Remote journals that fell behind this week?SELECT MAXIMUM_TIME_BEHIND, MAXIMUM_BEHIND_TIMESTAMP, ESTIMATED_TIME_BEHIND, TOTAL_SIZE_JOURNAL_RECEIVERS,RTRIM(ATTACHED_JOURNAL_RECEIVER_LIBRARY) CONCAT '/' CONCAT RTRIM(ATTACHED_JOURNAL_RECEIVER_NAME) AS JrnName, A.* FROM QSYS2.JOURNAL_INFO A WHEREMAXIMUM_BEHIND_TIMESTAMP > CURRENT TIMESTAMP - 7 DAYS AND MAXIMUM_TIME_BEHIND > 0 AND MAXIMUM_TIME_BEHIND IS NOT NULL ORDER BY MAXIMUM_TIME_BEHIND DESC FETCH FIRST 10 ROWS ONLY;



• Use SQL to extract data from journals• Either call the UDTF directly or use IBM i Navigator

• Why use these capabilities over the green screen commands?

Isolate detail from complex data, efficiently Automate frequent audit analysis Add logic to applications Leverage the SQL Query Engine (SQE) to order, group, join, transform journal based data

QSYS.DISPLAY_JOURNAL() – UDTF


SELECT journal_code, journal_entry_type, object, object_type, X.* FROM TABLE (QSYS2.Display_Journal('PRODDATA', 'QSQJRN', -- Journal library and name'', '', -- Receiver library and nameCAST(null as TIMESTAMP), -- Starting timestampCAST(null as DECIMAL(21,0)), -- Starting sequence number'', -- Journal codes'', -- Journal entries'',‘’,'',‘', -- Object library, Object name, Object

type, Object member‘SCOTT', -- User'', -- Job'' -- Program) ) AS xORDER BY entry_timestamp DESC;

Before 7.2 (must specify 15 parameters):

With 7.2 (leverage the optional parameters):

SELECT journal_code, journal_entry_type, object, object_type, X.* FROM TABLE (QSYS2.Display_Journal('PRODDATA', 'QSQJRN', -- Journal library and name“USER” => ‘SCOTT’ -- User) ) AS xORDER BY entry_timestamp DESC;

QSYS2.Display_Journal – User Defined Table Function


-- Which rows were deleted from TOYSTORE5/SALES table this week?

select ENTRY_DATA,ENTRY_TIMESTAMP,JOURNAL_ENTRY_TYPE,COUNT_OR_RRN as ROW_DELETED,"CURRENT_USER", RTRIM(JOB_NUMBER) CONCAT '/' CONCAT RTRIM(JOB_USER) CONCAT '/' CONCAT RTRIM(JOB_NAME) AS Qualified_Job_Name from table (

QSYS2.Display_Journal(

'TOYSTORE', 'QSQJRN', -- Journal library and name

STARTING_TIMESTAMP => CURRENT TIMESTAMP - 7 DAYS,

JOURNAL_ENTRY_TYPES => 'DL',

OBJECT_LIBRARY => 'TOYSTORE',

OBJECT_NAME => 'SALES',

OBJECT_OBJTYPE => '*FILE',

OBJECT_MEMBER => 'SALES'

) ) as x

order by entry_timestamp desc ;

DISPLAY_JOURNAL() Who deleted data?


-- What data was deleted from PRODDATA/SALES table this week?

select

cast(cast(substring(entry_data,610-610+1,10) as VARCHAR(10) for bit data) as DATE) AS SALES_DATE,

cast(cast(substring(entry_data,622-610+1,15) as VARCHAR(15) for bit data) as varchar(15) ccsid 37) as SALES_PERSON,

cast(cast(substring(entry_data,638-610+1,15) as VARCHAR(15) for bit data) as varchar(15) ccsid 37) as REGION,

cast(cast(substring(entry_data,655-610+1,4) as VARCHAR(4) for bit data) as varchar(4)) as SALES

from table (

QSYS2.Display_Journal(

'TOYSTORE', 'QSQJRN', -- Journal library and name

STARTING_TIMESTAMP => CURRENT TIMESTAMP - 7 DAYS,

JOURNAL_ENTRY_TYPES => 'DL',

OBJECT_LIBRARY => 'TOYSTORE',

OBJECT_NAME => 'SALES',

OBJECT_OBJTYPE => '*FILE',

OBJECT_MEMBER => 'SALES'

) ) as x

order by entry_timestamp desc;

DISPLAY_JOURNAL() What did they delete?


Schemas Journals View Entries Enter Filter Criteria

Journal Viewer finds the file and uses the file format to decompose the data!

Navigator What data was deleted?


SQL catalogs Work Management Services

Work Management Services


QSYS2.GET_JOB_INFO() – user defined table function

• GET_JOB_INFO() accepts the jobname as input and returns a single row result

table containing detail about that job.

• Enhanced with TR8:

• Use ‘*’ to return detail on the current job

• Current (or most recent) SQL Statement text returned

-- Get job information for the current jobselect a.* from table(qsys2.get_job_info('*')) a;

-- Get job information for the current jobselect a.* from table(qsys2.get_job_info('803868/Quser/Qzdasoinit')) a;


QSYS2.SYSTEM_VALUE_INFO – view

• The new view return the same data as the Retrieve System Values (QWCRSVAL) API

• *ALLOBJ or *AUDIT special authority is required to retrieve the values for QAUDCTL,

QAUDENDACN, QAUDFRCLVL, QAUDLVL, QAUDLVL2, and QCRTOBJAUD

(‘*NOTAVL’ or -1 are returned when accessed by an unauthorized user):

Catalog definition:SYSTEM_VALUE_NAME VARCHAR(10) – Name of the system valueCURRENT_NUMERIC_VALUE BIGINT – System value when binary data is returnedCURRENT_CHARACTER_VALUE VARGRAPHIC(1280) – System value when character data is returned

-- Examine the system values related to maximums

SELECT * FROM QSYS2.SYSTEM_VALUE_INFOWHERE SYSTEM_VALUE_NAME LIKE '%MAX%'ORDER BY SYSTEM_VALUE_NAME;



DECLARE GLOBAL TEMPORARY TABLE SESSION . Remote_System_Values

( SYSTEM_VALUE_NAME,CURRENT_NUMERIC_VALUE,CURRENT_CHARACTER_VALUE )

AS (SELECT * FROM X1423P2.QSYS2.SYSTEM_VALUE_INFO) WITH DATA

WITH REPLACE;

SELECT 'LP13UT16' AS "System Name", A.SYSTEM_VALUE_NAME,A.CURRENT_NUMERIC_VALUE,A.CURRENT_CHARACTER_VALUE FROM QSYS2.SYSTEM_VALUE_INFO A

LEFT EXCEPTION JOIN SESSION.Remote_System_Values B

ON A.SYSTEM_VALUE_NAME = B.SYSTEM_VALUE_NAME AND

A.CURRENT_NUMERIC_VALUE IS NOT DISTINCT FROM B.CURRENT_NUMERIC_VALUE AND

A.CURRENT_CHARACTER_VALUE IS NOT DISTINCT FROM B.CURRENT_CHARACTER_VALUE

UNION ALL

SELECT 'X1423P2' AS "System Name", B.SYSTEM_VALUE_NAME,B.CURRENT_NUMERIC_VALUE,B.CURRENT_CHARACTER_VALUE FROM QSYS2.SYSTEM_VALUE_INFO A

RIGHT EXCEPTION JOIN SESSION.Remote_System_Values B

ON A.SYSTEM_VALUE_NAME = B.SYSTEM_VALUE_NAME AND

A.CURRENT_NUMERIC_VALUE IS NOT DISTINCT FROM B.CURRENT_NUMERIC_VALUE AND

A.CURRENT_CHARACTER_VALUE IS NOT DISTINCT FROM B.CURRENT_CHARACTER_VALUE

ORDER BY SYSTEM_VALUE_NAME;

Remote 3-part DGTT

statement

Use a query to find the SYSVAL

differences between the two systems



Example exception join output using SYSTEM_VALUE_INFO.


SQL catalogs Command Services

Librarian Services


QSYS2.LIBRARY_LIST_INFO – view

• With direct access to the library list, SQL users can tap into the library list detail to:

• Programmatically review the environment

• Know when the library list needs to be adjusted

• Derive information about the libraries

IASP Number

Schema vs Library name mapping

User vs System vs Product libraries

Above all else, order of libraries searched for unqualified objects

-- Programmatically review the library list detail for this connectionSELECT * FROM QSYS2.LIBRARY_LIST_INFO;


QSYS2.SYSCATALOGS – view

• The SYSCATALOGS catalog mirrors the Relational Database Entries

(WRKRDBDIRE)

• The catalog returns status information for Independent ASPs (iASPs)

• CATALOG_STATUS values

AVAILABLE – available for use

ACTIVE – In the process of becoming available

VARYON – About to begin the vary on process

VARYOFF – Offline, not useable

-- Query the existence & state of the local database and iASPsSELECT CATALOG_NAME, CATALOG_STATUS, CATALOG_ASPNUM FROM

QSYS2.SYSCATALOGS WHERE CATALOG_TYPE = 'LOCAL‘;



Message Handling Services


QSYS2.JOBLOG_INFO – UDTF

• Job logs contain essential information.

• To understand a failure, job log messages are reviewed

• To understand which CL commands were issued, REQUEST messages in

the job log are reviewed

• Even though trace and failure collection instrumentation exists, job logs are

frequently requested by IBM Service

• The JOBLOG_INFO() UDTF provides a new service for application developers

and system managers

• A single parameter indicates the target job.

• ‘*’ can be used to indicate use the current job as the target.

-- Find the most recently executed command in a target job

SELECT MESSAGE_TEXT FROMTABLE(QSYS2.JOBLOG_INFO('706721/SCOTTF/QPADEV0006')) AWHERE A.MESSAGE_TYPE = 'REQUEST' ORDER BY ORDINAL_POSITION DESCFETCH FIRST 1 ROW ONLY;



-- Automatic consumption of job log in an application

CREATE OR REPLACE PROCEDURE TOYSTORE.UPDATE_SALES

(IN P_NEW_SALES INTEGER, IN P_SALES_PERSON VARCHAR(100),

IN P_SALES_DATE DATE)

DYNAMIC RESULT SETS 1

LANGUAGE SQL MODIFIES SQL DATA SET OPTION COMMIT = *CHG

BEGIN

DECLARE C_RESULT_SET1 CURSOR WITH RETURN TO CALLER FOR SELECT MESSAGE_ID, MESSAGE_TEXT,

MESSAGE_TYPE FROM SESSION.My_Joblog;

Mainline: BEGIN

DECLARE EXIT HANDLER FOR SQLEXCEPTION

BEGIN

DECLARE GLOBAL TEMPORARY TABLE My_Joblog AS

(SELECT * FROM TABLE(QSYS2.JOBLOG_INFO('*')) A)

WITH DATA WITH REPLACE;

OPEN C_RESULT_SET1;

END;

UPDATE TOYSTORE.SALES

SET SALES = SALES + P_NEW_SALES

WHERE SALES_PERSON = P_SALES_PERSON

AND SALES_DATE = P_SALES_DATE;

END Mainline;

END ;

CALL TOYSTORE.UPDATE_SALES(3, 'LUCCHESSI', '1995-12-31');



-- Saving job log detail to a permanent table

CREATE TABLE APPLIB.Joblog_Detail AS (SELECT QSYS2.JOB_NAME, A.* FROM TABLE(QSYS2.JOBLOG_INFO('*')) A) WITH NO DATA;

CREATE OR REPLACE PROCEDURE TOYSTORE.UPDATE_SALES(IN P_NEW_SALES INTEGER, IN P_SALES_PERSON VARCHAR(100),IN P_SALES_DATE CHAR(10))

LANGUAGE SQL MODIFIES SQL DATA

Mainline: BEGINDECLARE EXIT HANDLER FOR SQLEXCEPTIONINSERT INTO APPLIB.Joblog_Detail

SELECT QSYS2.JOB_NAME, A.* FROM TABLE(QSYS2.JOBLOG_INFO('*')) AORDER BY ORDINAL_POSITION DESCFETCH FIRST 5 ROWS ONLY;

UPDATE TOYSTORE.SALES SET SALES = SALES + P_NEW_SALESWHERE SALES_PERSON = P_SALES_PERSONAND SALES_DATE = P_SALES_DATE;

END Mainline;



Automatic consumption of job log in an application

call TOYSTORE.UPDATE_SALES(5, 'Frank Salesguy', '2014-1011');

SELECT A.JOB_NAME, MESSAGE_ID, MESSAGE_TEXT,MESSAGE_TOKENS,A.* from APPLIB.Joblog_Detail A ORDER BY MESSAGE_TIMESTAMP ASC;


QSYS2.REPLY_LIST_INFO – view

• One reply list handles system wide automatic response to messages

• Now, SQL can be used to:

Compare (exception join) the configuration of two machines

Determine whether a specific sequence number is already in use

Confirm whether setup is complete

• REPLY_LIST_INFO matches the Work Reply List Entry (WRKRPYLE) command

behavior of allowing *PUBLIC users to view the reply list information

-- Review reply list detail for all messages which begin with ‘CPA’

SELECT * FROM QSYS2.REPLY_LIST_INFO WHERE message_ID like 'CPA%‘;


SQL catalogs Security Services

Security Services


QSYS2.GROUP_PROFILE_ENTRIES – view

Use SQL to understand:

• What Group Profiles exist

• Which User Profiles belong to specific Group Profiles

• The text associated with the profile

Handles both:

Group profile . . . . . . . . . GRPPRF

Supplemental groups . . SUPGRPPRF

-- Examine all groups and the group membersSELECT * from qsys2.group_profile_entries;


SYSIBM.AUTHORIZATIONS – view

The AUTHORIZATIONS catalog has been extended to include a new column,

which differentiates users from groups.

The AUTHORIZATIONS view is a DB2 family compatible catalog which contains

one row for every authorization ID.


QSYS2.USER_INFO – view

• Built upon the data returned by the Retrieve User Information (QSYRUSRI) API.

• Users see the data for any *USRPRF to which they have *READ authority

• Setup details, authorizations, and more… easy access to deep details

-- Which users are having trouble signing on?

SELECT * FROM QSYS2.USER_INFO

WHERE SIGN_ON_ATTEMPTS_NOT_VALID > 0;


USER_INFO & GROUP_PROFILE_ENTRIES

• Leverage multiple services to answer more interesting questions

---- Which users have *ALLOBJ authority either directly-- or via a Group or Supplemental profile?--SELECT AUTHORIZATION_NAME, STATUS, NO_PASSWORD_INDICATOR,

PREVIOUS_SIGNON,TEXT_DESCRIPTIONFROM QSYS2.USER_INFOWHERE SPECIAL_AUTHORITIES LIKE '%*ALLOBJ%'OR AUTHORIZATION_NAME IN (

SELECT USER_PROFILE_NAMEFROM QSYS2.GROUP_PROFILE_ENTRIESWHERE GROUP_PROFILE_NAME IN (

SELECT AUTHORIZATION_NAMEFROM QSYS2.USER_INFOWHERE SPECIAL_AUTHORITIES like '%*ALLOBJ%')

)ORDER BY AUTHORIZATION_NAME;


USER_INFO & GROUP_PROFILE_ENTRIES

• Query results…


QSYS2.USER_INFO – view

• Extended to include columns that are available to users of the QSYRUSRI() API.

-- Which users are at risk of becoming disabled due to lack of use? SELECT * FROM QSYS2.USER_INFO WHERE STATUS = '*ENABLED' AND LAST_USED_TIMESTAMP IS NOT NULLORDER BY LAST_USED_TIMESTAMP ASCFETCH FIRST 20 ROWS ONLY;

New Columns


QSYS2.FUNCTION_INFO – view

• Built upon the data returned by the Retrieve Function Information

(QSYRTVFI, QsyRetrieveFunctionInformation) API

• Any user can examine the function usage identifiers.

• Only users with *SECADM user special authority can examine the function usage

configuration details returned via the QSYS2.FUNCTION_INFO catalog.

• Each row describes the function usage defined on the machine.

Example:

-- Which function usage IDs exist and what is the default configuration?

SELECT * FROM QSYS2.FUNCTION_INFO ORDER BY FUNCTION_ID;


QSYS2.FUNCTION_USAGE – view

• The detail returned corresponds to the data returned by

the Retrieve Function Usage Information

(QSYRTFUI, QsyRetrieveFunctionUsageInfo) API.

• Only users with *SECADM user special authority can examine the function usage

configuration details returned with this view. Users without *SECADM authority who attempt

to reference this view will get SQLCODE -443.

• Each row corresponds with users or groups that have function usage settings

Example:

-- What function usage has been granted or revoked?

SELECT * FROM QSYS2.FUNCTION_USAGE ORDER BY FUNCTION_ID, USER_NAME;

http://pic.dhe.ibm.com/infocenter/iseries/v7r1m0/index.jsp?topic=%2Fapis%2Fqsyrtfui.htm


SQL catalogs Storage Services

Storage Services


QSYS2.USER_STORAGE – view

• Built upon the data returned by the Retrieve User Information (QSYRUSRI) API.

• Users see the data for any *USRPRF to which they have *READ authority

• User storage is broken down by SYSBAS and iASPs

-- How much storage has user SCOTTF consumed?

SELECT * FROM QSYS2.USER_STORAGE

WHERE USER_NAME = ‘SCOTTF’;


QSYS2.USER_STORAGE – view

-- Review the top 10 storage consumers

SELECT A.AUTHORIZATION_NAME, SUM(A.STORAGE_USED) AS TOTAL_STORAGE_USED, B.TEXT_DESCRIPTION, B.ACCOUNTING_CODE, B.MAXIMUM_ALLOWED_STORAGE

FROM QSYS2.USER_STORAGE A

INNER JOIN QSYS2.USER_INFO B ON B.USER_NAME = A.AUTHORIZATION_NAME

GROUP BY A.AUTHORIZATION_NAME, B.TEXT_DESCRIPTION,B.ACCOUNTING_CODE, B.MAXIMUM_ALLOWED_STORAGE

ORDER BY TOTAL_STORAGE_USED DESC FETCH FIRST 10 ROWS ONLY;


QSYS2.SYSDISKSTAT – view

The SYSDISKSTAT catalog can be used to quickly and easily understand the DISK information

using SQL.

Examples:

-- Query information for all SSD unitsSELECT * FROM QSYS2.SYSDISKSTAT WHERE UNIT_TYPE = 1;-- Query information for all DISKs, order by percentage usedSELECT PERCENT_USED, A.* FROM QSYS2.SYSDISKSTAT A

ORDER BY PERCENT_USED DESC;


• Observe System-wide Temporary storage consumption

via a new DB2 for i Service: QSYS2.SYSTMPSTG

• Read all about it in IBM Knowledge Center:www.ibm.com/support/knowledgecenter/ssw_ibm_i_72/rzajq/rzajqviewsystmpstg.htm

-- Which active jobs are the top consumers of temporary storage?

SELECT bucket_current_size, bucket_peak_size,

rtrim(job_number) concat '/' concat rtrim(job_user_name) concat '/' concat rtrim(job_name) as q_job_name

FROM QSYS2.SYSTMPSTG

WHERE job_status = '*ACTIVE'

ORDER BY bucket_current_size desc;

Improved

System Management

with DB2 for i

QSYS2.SYSTMPSTG – view

http://www.ibm.com/support/knowledgecenter/ssw_ibm_i_72/rzajq/rzajqviewsystmpstg.htm


• Combine services to extract more detail

-- Which active database server connections

-- are consuming the most temporary storage

WITH TOP_TMP_STG (bucket_current_size, q_job_name) AS (

SELECT bucket_current_size, rtrim(job_number) concat '/' concatrtrim(job_user_name) concat '/' concat rtrim(job_name) as q_job_name

FROM QSYS2.SYSTMPSTG

WHERE job_status = '*ACTIVE' AND JOB_NAME IN ('QZDASOINIT', 'QZDASSINIT', 'QRWTSRVR', 'QSQSRVR')

ORDER BY bucket_current_size desc fetch first 10 rows only

) SELECT bucket_current_size, q_job_name, V_SQL_STATEMENT_TEXT, B.* FROM TOP_TMP_STG, TABLE(QSYS2.GET_JOB_INFO(q_job_name)) B;

Improved

System Management

with DB2 for i

QSYS2.SYSTMPSTG – view



Command Services


QSYS2.QCMDEXC – Procedure

The QCMDEXC procedure can be used within SQL applications to easily execute CL

Commands.

Examples:

• DECLARE V_CPYLIB_COMMAND VARCHAR(500);DECLARE V_CPYLIB_LEN DECIMAL(15, 5);SET V_CPYLIB_COMMAND = 'CPYLIB FROMLIB(' CONCAT RTRIM(V_LIBRARY) CONCAT ') TOLIB(' CONCAT RTRIM(V_NEW_LIBRARY) CONCAT ') DATA(*NO)‘;SET V_CPYLIB_LEN = CHARACTER_LENGTH(V_CPYLIB_COMMAND);CALL QSYS2.QCMDEXC(V_CPYLIB_COMMAND, V_CPYLIB_LEN);

• CALL QSYS2.QCMDEXC('ADDLIBLE PRODLIB2',17);

• Length argument no longer required:

CALL QSYS2.QCMDEXC('ADDLIBLE PRODLIB2');


DB2 for i built-in Global Variables

Built-in Global Variables


DB2 for i Built-in Global Variables

• The qualified job name of the current connection is easily accessed

• When SQL Server Mode is used, the job name of the application instance

which owns the connection is accessed through SERVER_MODE_JOB_NAME

• Use these variables to deploy advanced logic in triggers, RCAC rules, and

more

Variable name Schema Data Type Size

JOB_NAME QSYS2 VARCHAR 28

SERVER_MODE_JOB_NAME QSYS2 VARCHAR 28

CLIENT_IPADDR SYSIBM VARCHAR 128

CLIENT_HOST SYSIBM VARCHAR 255

CLIENT_PORT SYSIBM INTEGER -

PACKAGE_NAME SYSIBM VARCHAR 128

PACKAGE_SCHEMA SYSIBM VARCHAR 128

PACKAGE_VERSION SYSIBM VARCHAR 64

ROUTINE_SCHEMA SYSIBM VARCHAR 128

ROUTINE_SPECIFIC_NAME SYSIBM VARCHAR 128

ROUTINE_TYPE SYSIBM CHAR 1

New with

IBM i 7.2

SF99702

Level 3

Available

with

base

IBM i 7.2


Built-in Global Variables – Client information

SELECT SYSIBM.client_host AS CLIENT_HOST,

SYSIBM.client_ipaddr AS CLIENT_IP,

SYSIBM.client_port AS CLIENT_PORT

FROM LP92UT27.SYSIBM.SYSDUMMY1;

SELECT * FROM LP92UT27.QSYS2.TCPIP_INFO;

• Two ways to extract the detail

• Global variables fit nicely into view definitions & RCAC masks/permissions


Built-in Global Variables – Routine information

create procedure scottf.show_GV_values(

rtn_schema_p out varchar(128),

rtn_specific_name_p out varchar(128),

rtn_type_p out char(1))

language sql

specific scottf.demonstrate_the_new_DB2_for_i_GVs

begin

SET (rtn_schema_p,rtn_specific_name_p,rtn_type_p) =

(SYSIBM.ROUTINE_SCHEMA, SYSIBM.ROUTINE_SPECIFIC_NAME, SYSIBM.ROUTINE_TYPE);

End;

CALL scottf.show_GV_values(?,?,?);

Variables reflect the currently executing routine (procedure or function)


Built-in Global Variables – Routine information

create or replace function scottf.show_specific_name_function()

returns clob(1K)

language sql

deterministic

Begin

RETURN(SYSIBM.ROUTINE_SCHEMA CONCAT '.' CONCAT SYSIBM.ROUTINE_SPECIFIC_NAME CONCAT

CASE WHEN SYSIBM.ROUTINE_TYPE = 'P' THEN ' PROCEDURE'

WHEN SYSIBM.ROUTINE_TYPE = 'F' THEN ' FUNCTION'

END);

End;

values(scottf.show_specific_name_function());

Leverage this new insight within code used by procedures and functions


Built-in Global Variables – DRDA information

• When DRDA is used, the package detail is readily accessible via the new DB2

for i global variables.

• Similar to the routine variables, this can provide easy identification of remote

execution of embedded SQL programs.

SELECT SYSIBM.package_schema AS PACKAGE_SCHEMA,

SYSIBM.package_name AS PACKAGE_NAME,

SYSIBM.package_version AS PACKAGE_VERSION

FROM LP92UT27.SYSIBM.SYSDUMMY1;


SQL catalogs Landscape view

Landscape


SYSCATALOGS

INFORMATION_SCHEMA_CATALOG_NAME

Catalogs

IBM® DB2® for i Catalogs

SQLSCHEMAS

SCHEMATA

Schemas

SYSSCHEMAS

SYSCHKCST

SYSCST

SYSCSTCOL

SYSCSTDEP

SYSKEYCST

SYSREFCST

SQLFOREIGNKEYS

SQLPRIMARYKEYS

CHECK_CONSTRAINTS

REFERENTIAL_CONSTRAINTS

TABLE_CONSTRAINTS

Constraints

SYSCOLUMNS

SYSCOLUMNS2

SYSFIELDS

SYSINDEXES

SYSKEYS

SYSTABLEDEP

SYSTABLES

SYSVIEWDEP

SYSVIEWS

SQLCOLUMNS

SQLSPECIALCOLUMNS

SQLTABLES

COLUMNS

TABLES

VIEWS

Tables Views Indexes

SYSTRIGCOL

SYSTRIGDEP

SYSTRIGGERS

SYSTRIGUPD

TriggersSYSPACKAGE

SYSSEQUENCES

SYSTYPES

SYSVARIABLEDEP

SYSVARIABLES

SQLTYPEINFO

SQLUDTS

USER_DEFINED_TYPES

SEQUENCES

Miscellaneous Objects

SYSFUNCS

SYSJARCONTENTS

SYSJAROBJECTS

SYSPARMS

SYSPROCS

SYSROUTINEDEP

SYSROUTINES

SQLFUNCTIONCOLS

SQLFUNCTIONS

SQLPROCEDURECOLS

SQLPROCEDURES

PARAMETERS

ROUTINES

Routines Statistics

SYSCOLUMNSTAT

SYSINDEXSTAT

SYSMQTSTAT

SYSPACKAGESTAT

SYSPACKAGESTMTSTAT

SYSPARTITIONDISK

SYSPARTITIONINDEXES

SYSPARTITIONINDEXDISK

SYSPARTITIONINDEXSTAT

SYSPARTITIONMQTS

SYSPARTITIONSTAT

SYSPROGRAMSTAT

SYSPROGRAMSTMTSTAT

SYSTABLEINDEXSTAT

SYSTABLESTAT

SQLSTATISTICS

DB2 for i catalog views (QSYS2)

ODBC and JDBCTM

catalog views (SYSIBM)

ANS and ISO catalog views (QSYS2)

SQL_FEATURES

SQL_LANGUAGES

SQL_SIZING

CHARACTER_SETS

Database Support

XSRANNOTATIONINFO

XSROBJECTCOMPONENTS

XSROBJECTHIERARCHIES

XSROBJECTS

XML Schemas

Privileges

SQLCOLPRIVILEGES

SQLTABLEPRIVILEGES

AUTHORIZATIONS

ROUTINE_PRIVILEGES

UDT_PRIVILEGES

USAGE_PRIVILEGES

VARIABLE_PRIVILEGES

SYSCOLAUTH

SYSCONTROLS

SYSCONTROLSDEP

SYSPACKAGEAUTH

SYSROUTINEAUTH

SYSSCHEMAAUTH

SYSSEQUENCEAUTH

SYSTABAUTH

SYSUDTAUTH

SYSVARIABLEAUTH

SYSXSROBJECTAUTH

Java and all Java-based trademarks are trademarks of Sun Microsystems, Inc. in the United States, other countries, or both.

Other company, product or service names may be trademarks or service marks of others.

http://www.ibm.com/systems/i/software/db2/


SYSTOOLS.ACT_ON_INDEX_ADVICE - PROCEDURE

SYSTOOLS.HARVEST_INDEX_ADVICE - PROCEDURE

QSYS2.OVERRIDE_QAQQINI - PROCEDURE

QSYS2.RESET_TABLE_INDEX_STATISTICS - PROCEDURE

QSYS2.SYSIXADV - TABLE

SYSTOOLS.REMOVE_INDEXES - PROCEDURE

Performance Services

QSYS2.HEALTH_ACTIVITY

QSYS2.HEALTH_DATABASE_OVERVIEW

QSYS2.HEALTH_DESIGN_LIMITS

QSYS2.HEALTH_ENVIRONMENTAL_LIMITS

QSYS2.HEALTH_SIZE_LIMITS

QSYS2.RESET_ENVIRONMENTAL_LIMITS

Health Center Procedures

PTF ServicesQSYS2.PTF_INFO – VIEW

QSYS2.GROUP_PTF_INFO – VIEW

SYSTOOLS.GROUP_PTF_CURRENCY -VIEW

DB2 for i Services

IBM i Services

http://www.ibm.com/developerworks/ibmi/db2

http://www.ibm.com/developerworks/ibmi/techupdates/db2/landscape

QSYS2.CANCEL_SQL

QSYS2.DUMP_SQL_CURSORS

QSYS2.EXTRACT_STATEMENTS

QSYS2.FIND_AND_CANCEL_QSQSRVR_SQL

QSYS2.FIND_QSQSRVR_JOBS

QSYS2.GENERATE_SQL

QSYS2.RESTART_IDENTITY

SYSTOOLS.CHECK_CST

SYSTOOLS.CHECK_SYSROUTINE

Utility Procedures Security Services

QSYS2.FUNCTION_INFO – VIEW

QSYS2.FUNCTION_USAGE – VIEW

QSYS2.GROUP_PROFILE_ENTRIES – VIEW

SYSPROC.SET_COLUMN_ATTRIBUTE - PROCEDURE

QSYS2.SQL_CHECK_AUTHORITY - UDF

QSYS2.USER_INFO – VIEW

TCP/IP Services

QSYS2.TCPIP_INFO – VIEW

SYSIBMADM.ENV_SYS_INFO – VIEW

Work Management Services

QSYS2.SYSTEM_VALUE_INFO – VIEW

QSYS2.GET_JOB_INFO – UDTF

QSYS2.CHANGE_PLAN_CACHE_SIZE

QSYS2.DUMP_PLAN_CACHE

QSYS2.DUMP_PLAN_CACHE_PROPERTIES

QSYS2.DUMP_PLAN_CACHE_topN

QSYS2.DUMP_SNAP_SHOT_PROPERTIES

QSYS2.END_ALL_PLAN_CACHE_EVENT_MONITORS

QSYS2.END_PLAN_CACHE_EVENT_MONITOR

QSYS2.START_PLAN_CACHE_EVENT_MONITOR (2)

Plan Cache Procedures

System Health ServicesQSYS2.SYSLIMTBL - TABLE

QSYS2.SYSLIMITS – VIEWQSYS2.OVERRIDE_TABLE – PROCEDURE

QSYS2.DELIMIT_NAME – UDF

SYSPROC.WLM_SET_CLIENT_INFO – PROCEDURE

Application Services

Journal ServicesQSYS2.DISPLAY_JOURNAL – UDTF


Storage Services

QSYS2.SYSDISKSTAT – VIEW

QSYS2.SYSTMPSTG – VIEW

QSYS2.USER_STORAGE – VIEW

Object Services

QSYS2.OBJECT_STATISTICS – UDTF

IBM® DB2® for i Services

QSYS2.QCMDEXC - PROCEDURE

Librarian Services

QSYS2.LIBRARY_LIST_INFO – View

Message Handling Services

QSYS2.JOBLOG_INFO – View

QSYS2.REPLY_LIST_INFO – View

http://www.ibm.com/developerworks/ibmi/db2

http://www.ibm.com/developerworks/ibmi/techupdates/db2/landscape


Documentation

• With IBM i 7.2, these and other

services are documented within the

“Database Performance and

Optimization” book

• The Technology Updates wiki

includes fact pages for these

services

http://ibm.biz/DB2foriServices

http://ibm.biz/DB2foriServices


This document was developed for IBM offerings in the United States as of the date of publication. IBM may not make these offerings available in

other countries, and the information is subject to change without notice. Consult your local IBM business contact for information on the IBM

offerings available in your area.

Information in this document concerning non-IBM products was obtained from the suppliers of these products or other public sources. Questions

on the capabilities of non-IBM products should be addressed to the suppliers of those products.

IBM may have patents or pending patent applications covering subject matter in this document. The furnishing of this document does not give

you any license to these patents. Send license inquires, in writing, to IBM Director of Licensing, IBM Corporation, New Castle Drive, Armonk, NY

10504-1785 USA.

All statements regarding IBM future direction and intent are subject to change or withdrawal without notice, and represent goals and objectives

only.

The information contained in this document has not been submitted to any formal IBM test and is provided "AS IS" with no warranties or

guarantees either expressed or implied.

All examples cited or described in this document are presented as illustrations of the manner in which some IBM products can be used and the

results that may be achieved. Actual environmental costs and performance characteristics will vary depending on individual client configurations

and conditions.

IBM Global Financing offerings are provided through IBM Credit Corporation in the United States and other IBM subsidiaries and divisions

worldwide to qualified commercial and government clients. Rates are based on a client's credit rating, financing terms, offering type, equipment

type and options, and may vary by country. Other restrictions may apply. Rates and offerings are subject to change, extension or withdrawal

without notice.

IBM is not responsible for printing errors in this document that result in pricing or information inaccuracies.

All prices shown are IBM's United States suggested list prices and are subject to change without notice; reseller prices may vary.

IBM hardware products are manufactured from new parts, or new and serviceable used parts. Regardless, our warranty terms apply.

Any performance data contained in this document was determined in a controlled environment. Actual results may vary significantly and are

dependent on many factors including system hardware configuration and software design and configuration. Some measurements quoted in this

document may have been made on development-level systems. There is no guarantee these measurements will be the same on generally-

available systems. Some measurements quoted in this document may have been estimated through extrapolation. Users of this document

should verify the applicable data for their specific environment.

Special notices


IBM, the IBM logo, ibm.com AIX, AIX (logo), AIX 6 (logo), AS/400, BladeCenter, Blue Gene, ClusterProven, DB2, ESCON, i5/OS, i5/OS (logo), IBM Business Partner

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System/6000, RS/6000, THINK, Tivoli, Tivoli (logo), Tivoli Management Environment, WebSphere, xSeries, z/OS, zSeries, AIX 5L, Chiphopper, Chipkill, Cloudscape, DB2

Universal Database, DS4000, DS6000, DS8000, EnergyScale, Enterprise Workload Manager, General Purpose File System, , GPFS, HACMP, HACMP/6000, HASM, IBM

Systems Director Active Energy Manager, iSeries, Micro-Partitioning, POWER, PowerExecutive, PowerVM, PowerVM (logo), PowerHA, Power Architecture, Power

Everywhere, Power Family, POWER Hypervisor, Power Systems, Power Systems (logo), Power Systems Software, Power Systems Software (logo), POWER2,

POWER3, POWER4, POWER4+, POWER5, POWER5+, POWER6, POWER6+, System i, System p, System p5, System Storage, System z, Tivoli Enterprise, TME 10,

Workload Partitions Manager and X-Architecture are trademarks or registered trademarks of International Business Machines Corporation in the United States, other

countries, or both. If these and other IBM trademarked terms are marked on their first occurrence in this information with a trademark symbol (® or ™), these symbols

indicate U.S. registered or common law trademarks owned by IBM at the time this information was published. Such trademarks may also be registered or common law

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The Power Architecture and Power.org wordmarks and the Power and Power.org logos and related marks are trademarks and service marks licensed by Power.org.

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trademarks of the Standard Performance Evaluation Corp (SPEC).

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Special notices (cont.)

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