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April 28, 2012 / Shivananda Rao P

Duplicating Database without connecting to Target Database or Catalog Database in Oracle 11g

In Oracle 10g version or earlier, while duplicating a database using RMAN, we had to connect to the Target database along with the Auxiliary Database. In oracle 11g, there is a new feature available, where in the duplication from the Target Database to the Auxiliary Database can be done using RMAN without connecting to the Target database or to the Catalog Database. Only thing what is required the full backup of the Target database. Below is the details on how to go ahead with duplicating the database without connecting to the Target Database or to the Auxiliary Database.

Target Database : myprim
Target Database Server : dev

Auxiliary Database : testdb
Auxiliary Database Server : uat

Step 1:
Take the incremental level 0 backup of the Target database using RMAN.
In my case, I had the backup of my target database (myprim) taken at the location “/u02/bkp”


[oracle@dev bkp]$ pwd
/u02/bkp
[oracle@dev bkp]$ ls -lrt
total 1076968
-rw-r--r-- 1 oracle oinstall        75 Apr 14 21:59 dbid.txt
-rw-r----- 1 oracle oinstall  53648384 Apr 25 10:04 MYPRIM_inc0_06n9a795_1_1.bak
-rw-r----- 1 oracle oinstall 984506368 Apr 25 10:06 MYPRIM_inc0_07n9a79l_1_1.bak
-rw-r----- 1 oracle oinstall   9830400 Apr 25 10:06 MYPRIM_inc0_08n9a7cb_1_1.bak
-rw-r----- 1 oracle oinstall     37376 Apr 25 10:06 MYPRIM_inc0_09n9a7cg_1_1.bak
-rw-r----- 1 oracle oinstall  53684224 Apr 25 10:06 MYPRIM_inc0_0an9a7ci_1_1.bak

 

Step 2:
Copy these backup pieces from the Target server (location /u02/bkp) to the auxiliary server (location /u03/backup)
Also, copy the pfile (initmyprim.ora) of the Target database to the Auxiliary server.

Copying Backup Pieces:


[oracle@dev bkp]$ scp *.bak uat:/u03/backup
oracle@uat's password:
MYPRIM_inc0_06n9a795_1_1.bak                  100%   51MB   3.4MB/s   00:15
MYPRIM_inc0_07n9a79l_1_1.bak                  100%  939MB   1.8MB/s   08:29
MYPRIM_inc0_08n9a7cb_1_1.bak                  100% 9600KB   4.7MB/s   00:02
MYPRIM_inc0_09n9a7cg_1_1.bak                  100%   37KB  36.5KB/s   00:00
MYPRIM_inc0_0an9a7ci_1_1.bak                  100%   51MB   5.1MB/s   00:10
[oracle@dev bkp]$

 

Copying pfile of Target Database to Auxiliary Server:


[oracle@dev dbs]$ scp initmyprim.ora uat:/u01/app/oracle/product/11.2.0/dbhome_1/dbs/
oracle@uat's password:
initmyprim.ora                                100%  921     0.9KB/s   00:01
[oracle@dev dbs]$

 

Step 3:

On the Auxiliary server, edit the pfile that was copied earlier to the desired entries (dump locations, control file location, datafile locations, if using ASM then specify the desired disk group) and rename it to the desired instance name file (init<SID>.ora). Below is the sample I had it done.

inittestdb.ora


testdb.__db_cache_size=297795584
testdb.__java_pool_size=4194304
testdb.__large_pool_size=4194304
testdb.__oracle_base='/u01/app/oracle'#ORACLE_BASE set from environment
testdb.__pga_aggregate_target=167772160
testdb.__sga_target=494927872
testdb.__shared_io_pool_size=0
testdb.__shared_pool_size=176160768
testdb.__streams_pool_size=4194304
*.audit_file_dest='/u01/app/oracle/admin/testdb/adump'
# *.audit_trail='db'
*.compatible='11.2.0.0.0'
*.control_files='+DATA'
*.db_block_size=8192
*.db_create_file_dest='+DATA'
*.db_domain=''
*.db_name='testdb'
*.db_recovery_file_dest='+ARCH'
*.db_recovery_file_dest_size=1073741824
*.diagnostic_dest='/u01/app/oracle'
*.dispatchers='(PROTOCOL=TCP) (SERVICE=testdbXDB)'
*.log_archive_format='%t_%s_%r.dbf'
*.open_cursors=300
*.pga_aggregate_target=164626432
*.processes=150
*.remote_login_passwordfile='EXCLUSIVE'
*.sga_target=494927872
*.undo_tablespace='UNDOTBS1'

 

Step 4:

Create a password file for the Auxiliary Database using the ORAPWD utility.

orapwd file=/u01/app/oracle/product/11.2.0/dbhome_1/dbs/orapwtestdb password=<mypassword>

 

Step 5:

Start the auxiliary instance using the modified by pfile.


[oracle@uat ~]$ export ORACLE_HOME=/u01/app/oracle/product/11.2.0/dbhome_1
[oracle@uat ~]$ export ORACLE_SID=testdb
[oracle@uat ~]$ sqlplus sys/oracle as sysdba

SQL*Plus: Release 11.2.0.1.0 Production on Wed Apr 25 10:46:24 2012

Copyright (c) 1982, 2009, Oracle.  All rights reserved.

Connected to an idle instance.

SQL> startup nomount pfile=/u01/app/oracle/product/11.2.0/dbhome_1/dbs/inittestdb.ora
ORACLE instance started.

Total System Global Area  492707840 bytes
Fixed Size                  2214656 bytes
Variable Size             188744960 bytes
Database Buffers          297795584 bytes
Redo Buffers                3952640 bytes
SQL>

 

Step 6:

Connect the auxiliary instance through RMAN and start the duplication.
The duplication is done by specifying the location of the backup pieces. The command to be used is DUPLICATE DATABASE TO ‘<auxiliary dbname>’ BACKUP LOCATION ‘<location of the backup pieces on the auxiliary server>’


[oracle@uat ~]$ rman auxiliary /

Recovery Manager: Release 11.2.0.1.0 - Production on Wed Apr 25 10:48:36 2012

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

connected to auxiliary database: TESTDB (not mounted)

RMAN> duplicate database to 'testdb' backup location '/u03/backup';

Starting Duplicate Db at 26-APR-12

contents of Memory Script:
{
sql clone "create spfile from memory";
}
executing Memory Script

sql statement: create spfile from memory

contents of Memory Script:
{
shutdown clone immediate;
startup clone nomount;
}
executing Memory Script

Oracle instance shut down

connected to auxiliary database (not started)
Oracle instance started

Total System Global Area     492707840 bytes

Fixed Size                     2214656 bytes
Variable Size                155190528 bytes
Database Buffers             331350016 bytes
Redo Buffers                   3952640 bytes

contents of Memory Script:
{
sql clone "alter system set  control_files =
''+DATA/testdb/controlfile/current.293.781612663'' comment=
''Set by RMAN'' scope=spfile";
sql clone "alter system set  db_name =
''MYPRIM'' comment=
''Modified by RMAN duplicate'' scope=spfile";
sql clone "alter system set  db_unique_name =
''TESTDB'' comment=
''Modified by RMAN duplicate'' scope=spfile";
shutdown clone immediate;
startup clone force nomount
restore clone primary controlfile from  '/u03/backup/MYPRIM_inc0_08n9a7cb_1_1.bak';
alter clone database mount;
}
executing Memory Script

sql statement: alter system set  control_files =   ''+DATA/testdb/controlfile/current.293.781612663'' comment= ''Set by RMAN'' scope=spfile

sql statement: alter system set  db_name =  ''MYPRIM'' comment= ''Modified by RMAN duplicate'' scope=spfile

sql statement: alter system set  db_unique_name =  ''TESTDB'' comment= ''Modified by RMAN duplicate'' scope=spfile

Oracle instance shut down

Oracle instance started

Total System Global Area     492707840 bytes

Fixed Size                     2214656 bytes
Variable Size                155190528 bytes
Database Buffers             331350016 bytes
Redo Buffers                   3952640 bytes

Starting restore at 26-APR-12
allocated channel: ORA_AUX_DISK_1
channel ORA_AUX_DISK_1: SID=23 device type=DISK

channel ORA_AUX_DISK_1: restoring control file
channel ORA_AUX_DISK_1: restore complete, elapsed time: 00:00:09
output file name=+DATA/testdb/controlfile/current.293.781612663
Finished restore at 26-APR-12

database mounted
released channel: ORA_AUX_DISK_1
allocated channel: ORA_AUX_DISK_1
channel ORA_AUX_DISK_1: SID=23 device type=DISK

contents of Memory Script:
{
set until scn  1015172;
set newname for clone datafile  1 to new;
set newname for clone datafile  2 to new;
set newname for clone datafile  3 to new;
set newname for clone datafile  4 to new;
restore
clone database
;
}
executing Memory Script

executing command: SET until clause

executing command: SET NEWNAME

executing command: SET NEWNAME

executing command: SET NEWNAME

executing command: SET NEWNAME

Starting restore at 26-APR-12
using channel ORA_AUX_DISK_1

channel ORA_AUX_DISK_1: starting datafile backup set restore
channel ORA_AUX_DISK_1: specifying datafile(s) to restore from backup set
channel ORA_AUX_DISK_1: restoring datafile 00001 to +DATA
channel ORA_AUX_DISK_1: restoring datafile 00002 to +DATA
channel ORA_AUX_DISK_1: restoring datafile 00003 to +DATA
channel ORA_AUX_DISK_1: restoring datafile 00004 to +DATA
channel ORA_AUX_DISK_1: reading from backup piece /u03/backup/MYPRIM_inc0_07n9a79l_1_1.bak
channel ORA_AUX_DISK_1: piece handle=/u03/backup/MYPRIM_inc0_07n9a79l_1_1.bak tag=TAG20120425T100437
channel ORA_AUX_DISK_1: restored backup piece 1
channel ORA_AUX_DISK_1: restore complete, elapsed time: 00:02:17
Finished restore at 26-APR-12

contents of Memory Script:
{
switch clone datafile all;
}
executing Memory Script

datafile 1 switched to datafile copy
input datafile copy RECID=5 STAMP=781612862 file name=+DATA/testdb/datafile/system.292.781612727
datafile 2 switched to datafile copy
input datafile copy RECID=6 STAMP=781612862 file name=+DATA/testdb/datafile/sysaux.291.781612729
datafile 3 switched to datafile copy
input datafile copy RECID=7 STAMP=781612862 file name=+DATA/testdb/datafile/undotbs1.290.781612731
datafile 4 switched to datafile copy
input datafile copy RECID=8 STAMP=781612862 file name=+DATA/testdb/datafile/users.289.781612731

contents of Memory Script:
{
set until scn  1015172;
recover
clone database
delete archivelog
;
}
executing Memory Script

executing command: SET until clause

Starting recover at 26-APR-12
using channel ORA_AUX_DISK_1

starting media recovery

channel ORA_AUX_DISK_1: starting archived log restore to default destination
channel ORA_AUX_DISK_1: restoring archived log
archived log thread=1 sequence=10
channel ORA_AUX_DISK_1: restoring archived log
archived log thread=1 sequence=11
channel ORA_AUX_DISK_1: reading from backup piece /u03/backup/MYPRIM_inc0_0an9a7ci_1_1.bak
channel ORA_AUX_DISK_1: piece handle=/u03/backup/MYPRIM_inc0_0an9a7ci_1_1.bak tag=TAG20120425T100610
channel ORA_AUX_DISK_1: restored backup piece 1
channel ORA_AUX_DISK_1: restore complete, elapsed time: 00:00:01
archived log file name=+ARCH/testdb/archivelog/2012_04_26/thread_1_seq_10.1075.781612867 thread=1 sequence=10
channel clone_default: deleting archived log(s)
archived log file name=+ARCH/testdb/archivelog/2012_04_26/thread_1_seq_10.1075.781612867 RECID=1 STAMP=781612868
archived log file name=+ARCH/testdb/archivelog/2012_04_26/thread_1_seq_11.1076.781612869 thread=1 sequence=11
channel clone_default: deleting archived log(s)
archived log file name=+ARCH/testdb/archivelog/2012_04_26/thread_1_seq_11.1076.781612869 RECID=2 STAMP=781612868
media recovery complete, elapsed time: 00:00:03
Finished recover at 26-APR-12

contents of Memory Script:
{
shutdown clone immediate;
startup clone nomount;
sql clone "alter system set  db_name =
''TESTDB'' comment=
''Reset to original value by RMAN'' scope=spfile";
sql clone "alter system reset  db_unique_name scope=spfile";
shutdown clone immediate;
startup clone nomount;
}
executing Memory Script

database dismounted
Oracle instance shut down

connected to auxiliary database (not started)
Oracle instance started

Total System Global Area     492707840 bytes

Fixed Size                     2214656 bytes
Variable Size                155190528 bytes
Database Buffers             331350016 bytes
Redo Buffers                   3952640 bytes

sql statement: alter system set  db_name =  ''TESTDB'' comment= ''Reset to original value by RMAN'' scope=spfile

sql statement: alter system reset  db_unique_name scope=spfile

Oracle instance shut down

connected to auxiliary database (not started)
Oracle instance started

Total System Global Area     492707840 bytes

Fixed Size                     2214656 bytes
Variable Size                155190528 bytes
Database Buffers             331350016 bytes
Redo Buffers                   3952640 bytes
sql statement: CREATE CONTROLFILE REUSE SET DATABASE "TESTDB" RESETLOGS ARCHIVELOG
MAXLOGFILES     16
MAXLOGMEMBERS      3
MAXDATAFILES      100
MAXINSTANCES     8
MAXLOGHISTORY      292
LOGFILE
GROUP  1  SIZE 50 M ,
GROUP  2  SIZE 50 M ,
GROUP  3  SIZE 50 M
DATAFILE
'+DATA/testdb/datafile/system.292.781612727'
CHARACTER SET WE8MSWIN1252
contents of Memory Script:
{
set newname for clone tempfile  1 to new;
switch clone tempfile all;
catalog clone datafilecopy  "+DATA/testdb/datafile/sysaux.291.781612729",
"+DATA/testdb/datafile/undotbs1.290.781612731",
"+DATA/testdb/datafile/users.289.781612731";
switch clone datafile all;
}
executing Memory Script

executing command: SET NEWNAME

renamed tempfile 1 to +DATA in control file

cataloged datafile copy
datafile copy file name=+DATA/testdb/datafile/sysaux.291.781612729 RECID=1 STAMP=781612964
cataloged datafile copy
datafile copy file name=+DATA/testdb/datafile/undotbs1.290.781612731 RECID=2 STAMP=781612964
cataloged datafile copy
datafile copy file name=+DATA/testdb/datafile/users.289.781612731 RECID=3 STAMP=781612964

datafile 2 switched to datafile copy
input datafile copy RECID=1 STAMP=781612964 file name=+DATA/testdb/datafile/sysaux.291.781612729
datafile 3 switched to datafile copy
input datafile copy RECID=2 STAMP=781612964 file name=+DATA/testdb/datafile/undotbs1.290.781612731
datafile 4 switched to datafile copy
input datafile copy RECID=3 STAMP=781612964 file name=+DATA/testdb/datafile/users.289.781612731

contents of Memory Script:
{
Alter clone database open resetlogs;
}
executing Memory Script

database opened
Finished Duplicate Db at 26-APR-12

RMAN>

 

Step 7:

Connect to the newly created database.


[oracle@uat ~]$ sqlplus / as sysdba

SQL*Plus: Release 11.2.0.1.0 Production on Thu Apr 26 10:44:36 2012

Copyright (c) 1982, 2009, Oracle.  All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production
With the Partitioning, Automatic Storage Management, OLAP, Data Mining
and Real Application Testing options

SQL> select status,instance_name from v$instance;

STATUS       INSTANCE_NAME
------------ ----------------
OPEN         testdb

SQL> select name from v$database;

NAME
---------
TESTDB

 

 

Here we go !!

 

COPYRIGHT

© Shivananda Rao P, 2012, 2013, 2014,2015. Unauthorized use and/or duplication of this material without express and written permission from this blog’s author and/or owner is strictly prohibited. Excerpts and links may be used, provided that full and clear credit is given to Shivananda Rao and http://www.shivanandarao-oracle.com with appropriate and specific direction to the original content.

DISCLAIMER

The views expressed here are my own and do not necessarily reflect the views of any other individual, business entity, or organization. The views expressed by visitors on this blog are theirs solely and may not reflect mine.

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5 Comments

Leave a Comment
  1. hari / Jan 6 2013 7:34 am

    i have followed ur documentation.but it is getting error.how to resolve issue
    this is my error
    RMAN> run
    2> {
    3> set newname for datafile 1 to ‘/oracle/disk2/clone/clone/system01.dbf’;
    4> set newname for datafile 2 to ‘/oracle/disk2/clone/clone/undotb01.dbf’;
    5> set newname for datafile 3 to ‘/oracle/disk2/clone/clone/sysaux01.dbf’;
    6> set newname for datafile 4 to ‘/oracle/disk2/clone/clone/users01.dbf’;
    7> set newname for tempfile 1 to ‘/oracle/disk2/clone/clone/temp01.dbf’;
    8> duplicate database to ‘clone’ backup location ‘/rmanbkp/’
    9> logfile
    10> group 1(‘/oracle/disk2/clone/clone/redo01.log’) size 50m reuse,
    11> group 2(‘/oracle/disk2/clone/clone/redo02.log’) size 50m reuse,
    12> group 3(‘/oracle/disk2/clone/clone/redo03.log’) size 50m;
    13> }

    executing command: SET NEWNAME

    executing command: SET NEWNAME

    executing command: SET NEWNAME

    executing command: SET NEWNAME

    contents of Memory Script:
    {
    set until scn 823720;
    set newname for datafile 1 to
    “/oracle/disk2/clone/clone/system01.dbf”;
    set newname for datafile 2 to
    “/oracle/disk2/clone/clone/undotb01.dbf”;
    set newname for datafile 3 to
    “/oracle/disk2/clone/clone/sysaux01.dbf”;
    set newname for datafile 4 to
    “/oracle/disk2/clone/clone/users01.dbf”;
    restore
    clone database
    ;
    }
    executing Memory Script

    executing command: SET until clause

    executing command: SET NEWNAME

    executing command: SET NEWNAME

    executing command: SET NEWNAME

    executing command: SET NEWNAME
    .
    .
    .
    .
    .
    Starting restore at 05-JAN-13
    using channel ORA_AUX_DISK_1
    using channel ORA_AUX_DISK_2
    using channel ORA_AUX_DISK_3
    using channel ORA_AUX_DISK_4

    RMAN-00571: ===========================================================
    RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
    RMAN-00571: ===========================================================
    RMAN-03002: failure of Duplicate Db command at 01/05/2013 23:23:51
    RMAN-05501: aborting duplication of target database
    RMAN-05556: not all datafiles have backups that can be recovered to SCN 823720
    RMAN-03015: error occurred in stored script Memory Script
    RMAN-06026: some targets not found – aborting restore
    RMAN-06023: no backup or copy of datafile 4 found to restore
    RMAN-06023: no backup or copy of datafile 3 found to restore

  2. shusssain / Apr 24 2013 7:49 pm

    Hi,
    How you handle different location of datafiles & logfiles in this methood. Do I put db_convert in init?

  3. Shivananda Rao P / Apr 25 2013 4:21 am

    Hello,

    Yes, adding db_file_name_convert would help you out. Also, you can go with the “set newname for datafile” clause to specify the new location for the datafiles.

    Regards,
    Shivananda

  4. Ashish / Jul 17 2013 10:40 am

    Thanx Shiva,
    I done with duplication.Now i need to uptodate this clone database .
    Can we take backup from current scn of Clone DB from Prod Database and apply that backup on Clone?

    Regards,
    Ashish

  5. Shivananda Rao P / Jul 17 2013 10:53 am

    Hi Ashish,

    I don’t think this is possible. If the clone db is a standby DB, then yes, it would work out.

    Regards,
    Shivananda

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