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