active database duplication in same server (11g).pdf

8/9/2019 ACTIVE DATABASE DUPLICATION IN SAME SERVER (11g).pdf

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RMAN ACTIVE DATABASE DUPLICATION IN SAME SERVER | ORACLE 11 g

Exploring the Oracle DBA Technology by Gunasekaran , Thiyagu

RMAN CLONING IN SAME SERVER

RMAN has the ability duplicate a database from a backup or from an active database. Using RMAN

possible to create a duplicate database on a remote server with the same directory structure and

different directory structure or else the local server with a different directory structure.

Oracle 11 g has introduced active database duplication, we can create a duplicate of the target

database without any backups. Duplication is performed over the network. Let us do active database

duplication in same server with different directory structure.

Source database name : crms

Auxiliary database name : hrms

Source database path : /u01/app/oracle/oradata/crms/

Auxiliary database path : /u01/app/oracle/oradata/hrms/

SOURCE DATABASE 192.168.1.130 (SERVER1.ORACLE.COM) SERVER1 PRODUCTION

AUXILIARY DATABASE 192.168.1.130 (SERVER1.ORACLE.COM) SERVER1 DEVELOPMENT

CREATING DIRECTORY STRUCTURE FOR AUXILIARY DATABASE

$ mkdir -p /u01/app/oracle/oradata/hrms/

$ mkdir -p /u01/app/oracle/admin/hrms/adump

$ mkdir -p /u01/app/oracle/admin/hrms/dpdump

$ mkdir -p /u01/app/oracle/flash_recovery_area/hrms #(for control file)

CONNECTING SOURCE DATABASE

SYS> select name, dbid from v$database;

NAME DBID--------- ----------CRMS 1570419964

SYS> show parameter service_names;

NAME TYPE VALUE------------------------------------ ----------- ----------------------service_names string crms.server1.com

PARAMETER FILE BACKUP FOR AUXILIARY DATABASE

SYS> show parameter pfile;

NAME TYPE VALUE------- --------- ------------------------------------------------------spfile string /u01/app/oracle/product/10.2.0/db_1/dbs/spfilecrms.ora

SYS> create pfile from spfile;

File created.


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[oracle@SERVER1 dbs]$ mv initcrms.ora inithrms.ora

[oracle@SERVER1 dbs]$ vi inithrms.ora

Create an init.ora from the source database & rename the pfile (init.ora) file . Make all necessary

changes the new init.ora file as per clone database such as, Changing db_name, location ofaudit_file_dest, control_files , etc...

AUXILIARY DATABASE PFILE

hrms.__db_cache_size=503316480

hrms.__java_pool_size=16777216

hrms.__large_pool_size=16777216

hrms.__oracle_base='/u02/app/oracle' # ORACLE_BASE set from environment

hrms.__pga_aggregate_target=503316480

hrms.__sga_target=754974720

hrms.__shared_io_pool_size=0

hrms.__shared_pool_size=201326592

hrms.__streams_pool_size=0

*.audit_file_dest='/u02/app/oracle/admin/ hrms /adump'

*.audit_trail='db'

*.compatible='11.2.0.0.0'

*.control_files='/u02/app/oracle/oradata/hrms/control01.ctl','/u02/app/oracle/flash_recovery_area/hrms/control02.ctl'

*.db_block_size=8192

*.db_domain='server1.com'

*.db_name= 'hrms'

*.db_recovery_file_dest='/u02/app/oracle/flash_recovery_area'

*.db_recovery_file_dest_size=4404019200

*.diagnostic_dest='/u02/app/oracle'

*.dispatchers='(PROTOCOL=TCP) (SERVICE=hrmsXDB)'

*.log_archive_format='%t_%s_%r.dbf'

*.memory_target=1244659712

*.open_cursors=300

*.processes=150

*.remote_login_passwordfile='EXCLUSIVE'

*.undo_tablespace='UNDOTBS1'

# Below parameters are used for from where to where the DATAFILES & LOGFILES will be cloned

db_file_name_convert=('/u02/app/oracle/oradata/crms/ ', '/u02/app/oracle/oradata/hrms')

log_file_name_convert=('/u02/app/oracle/oradata/crms/ ', '/u02/app/oracle/oradata/hrms')

If the source database directory structure & clone database directory structure differs, then need

to use db_file_name_convert & log_file_name_convert parameters.


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TARGET DATABASE PFILE

crms.__db_cache_size=503316480

crms.__java_pool_size=16777216

crms.__large_pool_size=16777216

crms.__oracle_base='/u02/app/oracle' # ORACLE_BASE set from environment

crms.__pga_aggregate_target=503316480

crms.__sga_target=754974720

crms.__shared_io_pool_size=0

crms.__shared_pool_size=201326592

crms.__streams_pool_size=0

*.audit_file_dest='/u02/app/oracle/admin/crms/adump'

*.audit_trail='db'

*.compatible='11.2.0.0.0'

*.control_files='/u02/app/oracle/oradata/crms/control01.ctl','/u02/app/oracle/flash_recovery_area/crms/control02.ctl'

*.db_block_size=8192

*.db_domain='server1.com'

*.db_name= 'crms'

*.db_recovery_file_dest='/u02/app/oracle/flash_recovery_area'

*.db_recovery_file_dest_size=4404019200

*.diagnostic_dest='/u02/app/oracle'

*.dispatchers='(PROTOCOL=TCP) (SERVICE=crmsXDB)'

*.log_archive_format='%t_%s_%r.dbf'

*.memory_target=1244659712

*.open_cursors=300

*.processes=150

*.remote_login_passwordfile='EXCLUSIVE'

*.undo_tablespace='UNDOTBS1'

CREATING PASSWORD FILE FOR AUXILIARY DATABASE

$ export ORACLE_SID=hrms

$ cd $ORACLE_HOME/dbs/

$ orapwd file=orapwhrms password=racdba force=y entries=3

Password must be same on Target database & Auxiliary database. When you connect RMAN to the

Source database as TARGET, must specify a password, even if RMAN uses OS authentication.

SET THE SAME PASSWORD OF CLONE DATABASE INTO THE TARGET DATABASE

SYS> alter user sys identified by racdba; # In crms database


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LISTETENER.ORA FILE CONFIGURATION

# listener.ora Network Configuration File: /u02/app/oracle/product/11.2.0/dbhome_1/network/admin/listener.ora

# Generated by Oracle configuration tools.

LISTENER =

(DESCRIPTION_LIST=

(DESCRIPTION=

(ADDRESS= (PROTOCOL=TCP)(HOST=192.168.1.130)( PORT=1521))

)

)

ADR_BASE_LISTENER = /u02/app/oracle

SID_LIST_LISTENER=

(SID_LIST=

(SID_DESC=

(SID_NAME=crms )

(ORACLE_HOME=/u02/app/oracle/product/11.2.0/dbhome_1)

# (GLOBAL_DBNAME=crms )

)

(SID_DESC=

(SID_NAME=hrms )

(ORACLE_HOME=/u02/app/oracle/product/11.2.0/dbhome_1)

# (GLOBAL_DBNAME=hrms )

)

)

TNSNAMES.ORA FILE CONFIGURATION

# tnsnames.ora Network Configuration File: /u02/app/oracle/product/11.2.0/dbhome_1/network/admin/tnsnames.ora

# Generated by Oracle configuration tools .

CRMSDB =

(DESCRIPTION =

(ADDRESS_LIST=

(ADDRESS= (PROTOCOL=TCP)(HOST=192.168.241.130)( PORT=1521))) FOR TARGET DB

(CONNECT_DATA=

(SERVER=DEDICATED)

(SERVICE_NAME=crms )

))


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HRMSDB =

(DESCRIPTION=

(ADDRESS_LIST=

(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.241.130)( PORT=1521))

) FOR AUXILIARY DB

(CONNECT_DATA=

(SERVER= DEDICATED)

(SERVICE_NAME= hrms )

)

)

STARTING LISTENER

$ lsnrctl start LISTENER

LSNRCTL for Linux: Version 11.2.0.1.0 - Production on 12-JAN-2015 18:22:42

Copyright (c) 1991, 2009, Oracle. All rights reserved.

Starting /u02/app/oracle/product/11.2.0/dbhome_1/bin/tnslsnr: please wait...

TNSLSNR for Linux: Version 11.2.0.1.0 - Production

System parameter file is /u02/app/oracle/product/11.2.0/dbhome_1/network/admin/listene r.ora

Log messages written to /u02/app/oracle/diag/tnslsnr/SERVER1/listener/alert/log.xml

Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=192.168.1.130)(PORT=1521)))

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.1.130)(PORT=1521)))

STATUS of the LISTENER

------------------------

Alias LISTENER

Version TNSLSNR for Linux: Version 11.2.0.1.0 - Production

Start Date 12-JAN-2015 18:22:42

Uptime 0 days 0 hr. 0 min. 0 sec

Trace Level off

Security ON: Local OS Authentication

SNMP OFF

Listener Parameter File /u02/app/oracle/product/11.2.0/dbhome_1/network/admin/listen er.ora

Listener Log File /u02/app/oracle/diag/tnslsnr/SERVER1/listener/alert/log.xml

Listening Endpoints Summary...

(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=192.168.1.130)(PORT=1521)))

Services Summary...

Service "crms" has 1 instance(s).

Instance "crms", status UNKNOWN, has 1 handler(s) for this service...


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Service "hrms" has 1 instance(s).

Instance "hrms", status UNKNOWN, has 1 handler(s) for this service...

The command completed successfully

CHECKING TNS CONNECTIVITY ON TARGET SEVER

$ tnsping crmsdb

TNS Ping Utility for Linux: Version 11.2.0.1.0 - Production on 12-JAN-2015 18:42:54


Used parameter files:

Used TNSNAMES adapter to resolve the alias

Attempting to contact (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.1.130)

(PORT = 1521)) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = crms)))OK (30 msec)

$ tnsping hrmsdb

TNS Ping Utility for Linux: Version 11.2.0.1.0 - Production on 12-JAN-2015 18:44:31


Used parameter files:

Used TNSNAMES adapter to resolve the alias

Attempting to contact (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.1.130)

(PORT = 1521)) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = hrms))) OK (20 msec)

STARTUP AUXILIARY DATABASE AT NOMOUNT STAGE & EXIT


$ sqlplus /as sysdba

SQL*Plus: Release 11.2.0.1.0 Production on Mon Jan 12 18:48:52 2015


Connected to an idle instance.

SQL> startup nomount;

ORACLE instance started.

Total System Global Area 1255473152 bytes

Fixed Size 1336232 bytes

Variable Size 754977880 bytes

Database Buffers 486539264 bytes

Redo Buffers 12619776 bytes

SQL> exit

Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production

With the Partitioning, OLAP, Data Mining and Real Application Testing options

Once I started my auxiliary instance in NOMOUNT state, i have disconnected SYS as NO SESSION

before duplicating a database. It is must & should.


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DUPLICATING TARGET DATABASE

In order to clone with the source database open and must be on archivelog mode. From 11g we can

clone databases using the from active database option. In this case we do NOT require an existing

backup, the active datafiles will be used as the source for the clone.

CONNECT TO THE TARGET (SOURCE) & AUXILIARY (NEW CLONE) DATABASES USING RMAN

$ export ORACLE_SID=crms

$ rman target sys/racdba@CRMSDB auxiliary sys/racdba@HRMSDB

Recovery Manager: Release 11.2.0.1.0 - Production on Mon Jan 12 21:32:05 2015

Copyright (c) 1982, 2009, Oracle and/or its affiliates. All rights reserved.

connected to target database: CRMS (DBID=1570419964)

connected to auxiliary database: HRMS (not mounted)

ISSUE THE RMAN DUPLICATE COMMAND TO START THE CLONING PROCESS

RMAN> duplicate target database to 'hrms' from active database;

Starting Duplicate Db at 12-JAN-15

using target database control file instead of recovery catalog

allocated channel: ORA_AUX_DISK_1

channel ORA_AUX_DISK_1: SID=19 device type=DISK

contents of Memory Script:{

sql clone "create spfile from memory";}executing Memory Script

sql statement: create spfile from memory

executing Memory Script

sql statement: create spfile from memory

contents of Memory Script:

{

shutdown clone immediate;

startup clone nomount;

}


Oracle instance shut down

connected to auxiliary database (not started)

Oracle instance started




Database Buffers 486539264 bytesRedo Buffers 12619776 bytes


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{

sql clone "alter system set db_name =

''CRMS'' comment=

''Modified by RMAN duplicate'' scope=spfile";

sql clone "alter system set db_unique_name =

''HRMS'' comment=

''Modified by RMAN duplicate'' scope=spfile";


startup clone force nomount

backup as copy current controlfile auxiliary format

'/u02/app/oracle/oradata/hrms/control01.ctl';

restore clone controlfile to '/u02/app/oracle/flash_recovery_area/hrms/control02.ctl' from

'/u02/app/oracle/oradata/hrms/control01.ctl';

alter clone database mount;

}executing Memory Script

sql statement: alter system set db_name = ''CRMS'' comment= ''Modified by RMAN duplicate''

scope=spfile

sql statement: alter system set db_unique_name = ''HRMS'' comment= ''Modified by RMAN

duplicate'' scope=spfile








Starting backup at 12-JAN-15

allocated channel: ORA_DISK_1

channel ORA_DISK_1: SID=17 device type=DISK

channel ORA_DISK_1: starting datafile copy

copying current control file

output file name=/u02/app/oracle/product/11.2.0/dbhome_1/dbs/snapcf_crms.f

tag=TAG20150112T215240 RECID=17 STAMP=868830761

channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:01

Finished backup at 12-JAN-15

Starting restore at 12-JAN-15

allocated channel: ORA_AUX_DISK_1

channel ORA_AUX_DISK_1: SID=18 device type=DISK

channel ORA_AUX_DISK_1: copied control file copy

Finished restore at 12-JAN-15

database mounted


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{

set newname for datafile 1 to

"/u02/app/oracle/oradata/hrms/system01.dbf";


"/u02/app/oracle/oradata/hrms/sysaux01.dbf";


"/u02/app/oracle/oradata/hrms/undotbs01.dbf";


"/u02/app/oracle/oradata/hrms/users01.dbf";

backup as copy reuse

datafile 1 auxiliary format

"/u02/app/oracle/oradata/hrms/system01.dbf" datafile

2 auxiliary format

"/u02/app/oracle/oradata/hrms/sysaux01.dbf" datafile

3 auxiliary format"/u02/app/oracle/oradata/hrms/undotbs01.dbf" datafile

4 auxiliary format

"/u02/app/oracle/oradata/hrms/users01.dbf" ;

sql 'alter system archive log current';

}


executing command: SET NEWNAME





using channel ORA_DISK_1


input datafile file number=00001 name=/u02/app/oracle/oradata/crms/system01.dbf

output file name=/u02/app/oracle/oradata/hrms/system01.dbf tag=TAG20150112T215248


channel ORA_DISK_1: starting datafile copyinput datafile file number=00002 name=/u02/app/oracle/oradata/crms/sysaux01.dbf

output file name=/u02/app/oracle/oradata/hrms/sysaux01.dbf tag=TAG20150112T215248



input datafile file number=00003 name=/u02/app/oracle/oradata/crms/undotbs01.dbf

output file name=/u02/app/oracle/oradata/hrms/undotbs01.dbf tag=TAG20150112T215248



input datafile file number=00004 name=/u02/app/oracle/oradata/crms/users01.dbf

output file name=/u02/app/oracle/oradata/hrms/users01.dbf tag=TAG20150112T215248




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sql statement: alter system archive log current


{

backup as copy reuse

archivelog like

"/u02/app/oracle/flash_recovery_area/CRMS/archivelog/2015_01_12/o1_mf_1_35_bc7x8mnq_.arc"

auxiliary format

"/u02/app/oracle/flash_recovery_area/HRMS/archivelog/2015_01_12/o1_mf_1_35_%u_.arc" ;

catalog clone recovery area;

switch clone datafile all;

}



using channel ORA_DISK_1channel ORA_DISK_1: starting archived log copy

input archived log thread=1 sequence=35 RECID=34 STAMP=868830827

output file

name=/u02/app/oracle/flash_recovery_area/HRMS/archivelog/2015_01_12/o1_mf_1_35_2spsijjc_.arc

RECID=0 STAMP=0

channel ORA_DISK_1: archived log copy complete, elapsed time: 00:00:01


searching for all files in the recovery area

List of Files Unknown to the Database

=====================================

File Name:

/u02/app/oracle/flash_recovery_area/HRMS/archivelog/2015_01_12/o1_mf_1_32_2apsii46_.arc

File Name:

/u02/app/oracle/flash_recovery_area/HRMS/archivelog/2015_01_12/o1_mf_1_29_1opsif4n_.arc

File Name:

/u02/app/oracle/flash_recovery_area/HRMS/archivelog/2015_01_12/o1_mf_1_31_24psihao_.arc

File Name:

/u02/app/oracle/flash_recovery_area/HRMS/archivelog/2015_01_12/o1_mf_1_26_16psidmc_.arc

File Name:

/u02/app/oracle/flash_recovery_area/HRMS/archivelog/2015_01_12/o1_mf_1_25_10psict2_.arc

File Name:

/u02/app/oracle/flash_recovery_area/HRMS/archivelog/2015_01_12/o1_mf_1_33_2gpsiieh_.arc

File Name:

/u02/app/oracle/flash_recovery_area/HRMS/archivelog/2015_01_12/o1_mf_1_35_2spsijjc_.arc

File Name:

/u02/app/oracle/flash_recovery_area/HRMS/archivelog/2015_01_12/o1_mf_1_30_1upsigs5_.arc

File Name:

/u02/app/oracle/flash_recovery_area/HRMS/archivelog/2015_01_12/o1_mf_1_28_1ipsiepl_.arc

File Name:

/u02/app/oracle/flash_recovery_area/HRMS/archivelog/2015_01_12/o1_mf_1_27_1cpsie5u_.arcFile Name:

/u02/app/oracle/flash_recovery_area/HRMS/archivelog/2015_01_12/o1_mf_1_34_2mpsij0t_.arc


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cataloging files...

cataloging done

List of Cataloged Files

=======================

File Name:

/u02/app/oracle/flash_recovery_area/HRMS/archivelog/2015_01_12/o1_mf_1_32_2apsii46_.arc

File Name:

/u02/app/oracle/flash_recovery_area/HRMS/archivelog/2015_01_12/o1_mf_1_29_1opsif4n_.arc

File Name:

/u02/app/oracle/flash_recovery_area/HRMS/archivelog/2015_01_12/o1_mf_1_31_24psihao_.arc

File Name:

/u02/app/oracle/flash_recovery_area/HRMS/archivelog/2015_01_12/o1_mf_1_26_16psidmc_.arc

File Name:

/u02/app/oracle/flash_recovery_area/HRMS/archivelog/2015_01_12/o1_mf_1_25_10psict2_.arc

File Name:/u02/app/oracle/flash_recovery_area/HRMS/archivelog/2015_01_12/o1_mf_1_33_2gpsiieh_.arc

File Name:


File Name:

/u02/app/oracle/flash_recovery_area/HRMS/archivelog/2015_01_12/o1_mf_1_30_1upsigs5_.arc

File Name:

/u02/app/oracle/flash_recovery_area/HRMS/archivelog/2015_01_12/o1_mf_1_28_1ipsiepl_.arc

File Name:

/u02/app/oracle/flash_recovery_area/HRMS/archivelog/2015_01_12/o1_mf_1_27_1cpsie5u_.arc

File Name:

/u02/app/oracle/flash_recovery_area/HRMS/archivelog/2015_01_12/o1_mf_1_34_2mpsij0t_.arc

datafile 1 switched to datafile copy

input datafile copy RECID=17 STAMP=868830829 file name=/u02/app/oracle/oradata/hrms/system01.dbf


input datafile copy RECID=18 STAMP=868830829 file name=/u02/app/oracle/oradata/hrms/sysaux01.dbf


input datafile copy RECID=19 STAMP=868830829 file

name=/u02/app/oracle/oradata/hrms/undotbs01.dbf


input datafile copy RECID=20 STAMP=868830829 file name=/u02/app/oracle/oradata/hrms/users01.dbf


{

set until scn 1159256;

recover

clone database

delete archivelog

;

}


executing command: SET until clause


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Starting recover at 12-JAN-15

using channel ORA_AUX_DISK_1

starting media recovery

archived log for thread 1 with sequence 35 is already on disk as file


archived log file

name=/u02/app/oracle/flash_recovery_area/HRMS/archivelog/2015_01_12/o1_mf_1_35_2spsijjc_.arc

thread=1 sequence=35

media recovery complete, elapsed time: 00:00:00

Finished recover at 12-JAN-15


{


startup clone nomount;sql clone "alter system set db_name =

''HRMS'' comment=

''Reset to original value by RMAN'' scope=spfile";

sql clone "alter system reset db_unique_name scope=spfile";


startup clone nomount;

}


database dismounted









sql statement: alter system set db_name = ''HRMS'' comment= ''Reset to original value byRMAN'' scope=spfile

sql statement: alter system reset db_unique_name scope=spfile






Variable Size 754977880 bytesDatabase Buffers 486539264 bytes



13/14



sql statement: CREATE CONTROLFILE REUSE SET DATABASE "HRMS" RESETLOGS ARCHIVELOG

MAXLOGFILES 16

MAXLOGMEMBERS 3

MAXDATAFILES 100

MAXINSTANCES 8

MAXLOGHISTORY 292

LOGFILE

GROUP 1 ( '/u02/app/oracle/oradata/hrmsredo01.log' ) SIZE 50 M REUSE,

GROUP 2 ( '/u02/app/oracle/oradata/hrmsredo02.log' ) SIZE 50 M REUSE,

GROUP 3 ( '/u02/app/oracle/oradata/hrmsredo03.log' ) SIZE 50 M REUSE

DATAFILE

'/u02/app/oracle/oradata/hrms/system01.dbf'

CHARACTER SET WE8MSWIN1252


{

set newname for tempfile 1 to

"/u02/app/oracle/oradata/hrms/temp01.dbf";

switch clone tempfile all;

catalog clone datafilecopy "/u02/app/oracle/oradata/hrms/sysaux01.dbf",

"/u02/app/oracle/oradata/hrms/undotbs01.dbf",

"/u02/app/oracle/oradata/hrms/users01.dbf";

switch clone datafile all;

}



renamed tempfile 1 to /u02/app/oracle/oradata/hrms/temp01.dbf in control file

cataloged datafile copy

datafile copy file name=/u02/app/oracle/oradata/hrms/sysaux01.dbf RECID=1 STAMP=868830846


datafile copy file name=/u02/app/oracle/oradata/hrms/undotbs01.dbf RECID=2 STAMP=868830846


datafile copy file name=/u02/app/oracle/oradata/hrms/users01.dbf RECID=3 STAMP=868830846


input datafile copy RECID=1 STAMP=868830846 file name=/u02/app/oracle/oradata/hrms/sysaux01.dbf


input datafile copy RECID=2 STAMP=868830846 file name=/u02/app/oracle/oradata/hrms/undotbs01.dbf


input datafile copy RECID=3 STAMP=868830846 file name=/u02/app/oracle/oradata/hrms/users01.dbf


{

Alter clone database open resetlogs;

}

executing Memory Scriptdatabase opened

Finished Duplicate Db at 12-JAN-15


14/14


Exploring the Oracle DBA Technology by Gunasekaran Thiyagu

$ ps -ef | grep pmon

oracle 9406 1 0 22:09 ? 00:00:00 ora_pmon_hrms

oracle 9842 30123 0 22:37 pts/3 00:00:00 grep pmon

oracle 31598 1 0 19:26 ? 00:00:02 ora_pmon_crms

CONNECTING AUXILIARY DATABASE


$ rlsqlplus "/as sysdba"

$ rlsqlplus "/as sysdba"

SQL*Plus: Release 11.2.0.1.0 Production on Mon Jan 12 22:38:54 2015


Connected to:Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production

With the Partitioning, OLAP, Data Mining and Real Application Testing options

SYS>select name, log mode, dbid from v$database;

NAME LOG_MODE DBID

--------- ------------ ----------

HRMS ARCHIVELOG 917071677

active database duplication in same server (11g).pdf

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