Target Database : test
Auxiliary Database : clone
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 (test db).
[oracle@trichy ~]$ . ./ora12c.env
[oracle@trichy ~]$ rman target /
Recovery Manager: Release 12.2.0.1.0 - Production on Fri Oct 16 23:42:11 2020
Copyright (c) 1982, 2017, Oracle and/or its affiliates. All rights reserved.
connected to target database: TEST (DBID=2343286063)
RMAN> BACKUP INCREMENTAL LEVEL=0 DATABASE;
Starting backup at 16-OCT-20
using target database control file instead of recovery catalog
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=52 device type=DISK
channel ORA_DISK_1: starting incremental level 0 datafile backup set
channel ORA_DISK_1: specifying datafile(s) in backup set
input datafile file number=00003 name=/u01/app/oracle/oradata/test/sysaux01.dbf
input datafile file number=00005 name=/u01/app/oracle/product/12.2.0.1/apex01.dbf
input datafile file number=00001 name=/u01/app/oracle/oradata/test/system01.dbf
input datafile file number=00004 name=/u01/app/oracle/oradata/test/undotbs01.dbf
input datafile file number=00007 name=/u01/app/oracle/oradata/test/users01.dbf
channel ORA_DISK_1: starting piece 1 at 16-OCT-20
channel ORA_DISK_1: finished piece 1 at 16-OCT-20
piece handle=/u01/arch/TEST/backupset/2020_10_16/o1_mf_nnnd0_TAG20201016T234303_hrmroyoq_.bkp tag=TAG20201016T234303 comment=NONE
channel ORA_DISK_1: backup set complete, elapsed time: 00:02:35
Finished backup at 16-OCT-20
Starting Control File and SPFILE Autobackup at 16-OCT-20
piece handle=/u01/arch/TEST/autobackup/2020_10_16/o1_mf_s_1053992740_hrmrtdxn_.bkp comment=NONE
Finished Control File and SPFILE Autobackup at 16-OCT-20
RMAN>
Step 2:
Copy these backup pieces from the Target server (location /u02/bkp) to the auxiliary server (location /u02/bkp)
Also, copy the pfile (initclone.ora) of the Target database to the Auxiliary server.
Copying Backup Pieces:
[oracle@trichy 2020_10_16]$ pwd
/u01/arch/TEST/backupset/2020_10_16
[oracle@trichy 2020_10_16]$ scp o1_mf_nnnd0_TAG20201016T234303_hrmroyoq_.bkp oracle@192.168.160.137:/u02/bkp
oracle@192.168.160.137's password:
o1_mf_nnnd0_TAG20201016T234303_hrmroyoq_.bkp 100% 2079MB 33.0MB/s 01:03
[oracle@trichy 2020_10_16]$ cd
Copying pfile of Target Database to Auxiliary Server:
[oracle@trichy dbs]$ scp inittest.ora oracle@192.168.160.137:/u01/app/oracle/product/12.2.0.1/db_1/dbs/initclone.ora
oracle@192.168.160.137's password:
inittest.ora 100% 1222 1.2KB/s 00:00
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.
initclone.ora
test.__large_pool_size=33554432
test.__oracle_base='/u01/app/oracle'#ORACLE_BASE set from environment
test.__pga_aggregate_target=2046820352
test.__sga_target=2046820352
test.__shared_io_pool_size=100663296
test.__shared_pool_size=419430400
test.__streams_pool_size=0
*.audit_file_dest='/u01/app/oracle/admin/clone/adump'
*.audit_trail='DB'
*.compatible='12.2.0'
*.db_file_name_convert='/u01/app/oracle/oradata/test','/u01/app/oracle/oradata/clone'
*.log_file_name_convert='/u01/app/oracle/oradata/test','/u01/app/oracle/oradata/clone'
*.control_files='/u01/app/oracle/oradata/clone/control01.ctl','/u01/app/oracle/oradata/clone/control02.ctl'
*.db_block_size=8192
*.db_name='clone'
*.db_recovery_file_dest_size=10737418240
*.db_recovery_file_dest='/u01/arch'
*.diagnostic_dest='/u01/app/oracle'
*.dispatchers='(PROTOCOL=TCP) (SERVICE=testXDB)'
*.nls_language='AMERICAN'
*.nls_territory='AMERICA'
*.open_cursors=300
*.pga_aggregate_target=1941M
*.processes=300
*.remote_login_passwordfile='EXCLUSIVE'
*.resource_limit=TRUE
*.sga_target=1952M
*.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@trichy ~]$ . ./clone.env
[oracle@trichy ~]$ export ORACLE_SID=clone
[oracle@trichy ~]$ export PATH=$ORACLE_HOME/bin:$PATH
[oracle@trichy ~]$ export ORACLE_HOME=/u01/app/oracle/product/12.2.0.1/db_1
[oracle@trichy ~]$ sqlplus / as sysdba
SQL*Plus: Release 12.2.0.1.0 Production on Sat Oct 17 01:47:52 2020
Copyright (c) 1982, 2016, Oracle. All rights reserved.
Connected to an idle instance.
SQL> startup nomount pfile=/u01/app/oracle/product/12.2.0.1/db_1/dbs/initclone.ora
ORACLE instance started.
Total System Global Area 2046820352 bytes
Fixed Size 8622480 bytes
Variable Size 587206256 bytes
Database Buffers 1442840576 bytes
Redo Buffers 8151040 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@trichy ~]$ . ./clone.env
[oracle@trichy ~]$ rman auxiliary /
Recovery Manager: Release 12.2.0.1.0 - Production on Sat Oct 17 01:49:23 2020
Copyright (c) 1982, 2017, Oracle and/or its affiliates. All rights reserved.
connected to auxiliary database: CLONE (not mounted)
RMAN> duplicate database to 'clone' backup location '/u02/bkp' nofilenamecheck;
Starting Duplicate Db at 17-OCT-20
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 2046820352 bytes
Fixed Size 8622480 bytes
Variable Size 587206256 bytes
Database Buffers 1442840576 bytes
Redo Buffers 8151040 bytes
contents of Memory Script:
{
sql clone "alter system set db_name =
''TEST'' comment=
''Modified by RMAN duplicate'' scope=spfile";
sql clone "alter system set db_unique_name =
''clone'' comment=
''Modified by RMAN duplicate'' scope=spfile";
shutdown clone immediate;
startup clone force nomount
restore clone primary controlfile from '/u02/bkp/o1_mf_s_1053992740_hrmrtdxn_.bkp';
alter clone database mount;
}
executing Memory Script
sql statement: alter system set db_name = ''TEST'' comment= ''Modified by RMAN duplicate'' scope=spfile
sql statement: alter system set db_unique_name = ''clone'' comment= ''Modified by RMAN duplicate'' scope=spfile
Oracle instance shut down
Oracle instance started
Total System Global Area 2046820352 bytes
Fixed Size 8622480 bytes
Variable Size 587206256 bytes
Database Buffers 1442840576 bytes
Redo Buffers 8151040 bytes
Starting restore at 17-OCT-20
allocated channel: ORA_AUX_DISK_1
channel ORA_AUX_DISK_1: SID=34 device type=DISK
channel ORA_AUX_DISK_1: restoring control file
channel ORA_AUX_DISK_1: restore complete, elapsed time: 00:00:03
output file name=/u01/app/oracle/oradata/clone/control01.ctl
output file name=/u01/app/oracle/oradata/clone/control02.ctl
Finished restore at 17-OCT-20
database mounted
released channel: ORA_AUX_DISK_1
allocated channel: ORA_AUX_DISK_1
channel ORA_AUX_DISK_1: SID=34 device type=DISK
checkpoint of the data file is more recent than the last archived log
contents of Memory Script:
{
set until scn 6429840;
sql clone 'alter database flashback off';
set newname for datafile 1 to
"/u01/app/oracle/oradata/clone/system01.dbf";
set newname for datafile 3 to
"/u01/app/oracle/oradata/clone/sysaux01.dbf";
set newname for datafile 4 to
"/u01/app/oracle/oradata/clone/undotbs01.dbf";
set newname for datafile 5 to
"/u01/app/oracle/product/12.2.0.1/apex01.dbf";
set newname for datafile 7 to
"/u01/app/oracle/oradata/clone/users01.dbf";
restore
clone database ;
}
executing Memory Script
executing command: SET until clause
sql statement: alter database flashback off
executing command: SET NEWNAME
executing command: SET NEWNAME
executing command: SET NEWNAME
executing command: SET NEWNAME
executing command: SET NEWNAME
Starting restore at 17-OCT-20
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 /u01/app/oracle/oradata/clone/system01.dbf
channel ORA_AUX_DISK_1: restoring datafile 00003 to /u01/app/oracle/oradata/clone/sysaux01.dbf
channel ORA_AUX_DISK_1: restoring datafile 00004 to /u01/app/oracle/oradata/clone/undotbs01.dbf
channel ORA_AUX_DISK_1: restoring datafile 00005 to /u01/app/oracle/product/12.2.0.1/apex01.dbf
channel ORA_AUX_DISK_1: restoring datafile 00007 to /u01/app/oracle/oradata/clone/users01.dbf
channel ORA_AUX_DISK_1: reading from backup piece /u02/bkp/o1_mf_nnnd0_TAG20201016T234303_hrmroyoq_.bkp
channel ORA_AUX_DISK_1: piece handle=/u02/bkp/o1_mf_nnnd0_TAG20201016T234303_hrmroyoq_.bkp tag=TAG20201016T234303
channel ORA_AUX_DISK_1: restored backup piece 1
channel ORA_AUX_DISK_1: restore complete, elapsed time: 00:01:27
Finished restore at 17-OCT-20
contents of Memory Script:
{
switch clone datafile all;
}
executing Memory Script
datafile 1 switched to datafile copy
input datafile copy RECID=5 STAMP=1054000364 file name=/u01/app/oracle/oradata/clone/system01.dbf
datafile 3 switched to datafile copy
input datafile copy RECID=6 STAMP=1054000364 file name=/u01/app/oracle/oradata/clone/sysaux01.dbf
datafile 4 switched to datafile copy
input datafile copy RECID=7 STAMP=1054000364 file name=/u01/app/oracle/oradata/clone/undotbs01.dbf
datafile 5 switched to datafile copy
input datafile copy RECID=8 STAMP=1054000365 file name=/u01/app/oracle/product/12.2.0.1/apex01.dbf
datafile 7 switched to datafile copy
input datafile copy RECID=9 STAMP=1054000365 file name=/u01/app/oracle/oradata/clone/users01.dbf
Oracle instance started
Total System Global Area 2046820352 bytes
Fixed Size 8622480 bytes
Variable Size 587206256 bytes
Database Buffers 1442840576 bytes
Redo Buffers 8151040 bytes
contents of Memory Script:
{
sql clone "alter system set db_name =
''CLONE'' comment=
''Reset to original value by RMAN'' scope=spfile";
sql clone "alter system reset db_unique_name scope=spfile";
}
executing Memory Script
sql statement: alter system set db_name = ''CLONE'' comment= ''Reset to original value by RMAN'' scope=spfile
sql statement: alter system reset db_unique_name scope=spfile
Oracle instance started
Total System Global Area 2046820352 bytes
Fixed Size 8622480 bytes
Variable Size 587206256 bytes
Database Buffers 1442840576 bytes
Redo Buffers 8151040 bytes
sql statement: CREATE CONTROLFILE REUSE SET DATABASE "CLONE" RESETLOGS ARCHIVELOG
MAXLOGFILES 16
MAXLOGMEMBERS 3
MAXDATAFILES 100
MAXINSTANCES 8
MAXLOGHISTORY 292
LOGFILE
GROUP 1 ( '/u01/app/oracle/oradata/clone/redo01.log' ) SIZE 200 M REUSE,
GROUP 2 ( '/u01/app/oracle/oradata/clone/redo02.log' ) SIZE 200 M REUSE,
GROUP 3 ( '/u01/app/oracle/oradata/clone/redo03.log' ) SIZE 200 M REUSE
DATAFILE
'/u01/app/oracle/oradata/clone/system01.dbf'
CHARACTER SET AL32UTF8
contents of Memory Script:
{
set newname for tempfile 1 to
"/u01/app/oracle/oradata/clone/temp01.dbf";
switch clone tempfile all;
catalog clone datafilecopy "/u01/app/oracle/oradata/clone/sysaux01.dbf",
"/u01/app/oracle/oradata/clone/undotbs01.dbf",
"/u01/app/oracle/product/12.2.0.1/apex01.dbf",
"/u01/app/oracle/oradata/clone/users01.dbf";
switch clone datafile all;
}
executing Memory Script
executing command: SET NEWNAME
renamed tempfile 1 to /u01/app/oracle/oradata/clone/temp01.dbf in control file
cataloged datafile copy
datafile copy file name=/u01/app/oracle/oradata/clone/sysaux01.dbf RECID=1 STAMP=1054000386
cataloged datafile copy
datafile copy file name=/u01/app/oracle/oradata/clone/undotbs01.dbf RECID=2 STAMP=1054000386
cataloged datafile copy
datafile copy file name=/u01/app/oracle/product/12.2.0.1/apex01.dbf RECID=3 STAMP=1054000386
cataloged datafile copy
datafile copy file name=/u01/app/oracle/oradata/clone/users01.dbf RECID=4 STAMP=1054000386
datafile 3 switched to datafile copy
input datafile copy RECID=1 STAMP=1054000386 file name=/u01/app/oracle/oradata/clone/sysaux01.dbf
datafile 4 switched to datafile copy
input datafile copy RECID=2 STAMP=1054000386 file name=/u01/app/oracle/oradata/clone/undotbs01.dbf
datafile 5 switched to datafile copy
input datafile copy RECID=3 STAMP=1054000386 file name=/u01/app/oracle/product/12.2.0.1/apex01.dbf
datafile 7 switched to datafile copy
input datafile copy RECID=4 STAMP=1054000386 file name=/u01/app/oracle/oradata/clone/users01.dbf
Reenabling controlfile options for auxiliary database
Executing: alter database force logging
contents of Memory Script:
{
Alter clone database open resetlogs;
}executing Memory Script
database opened
Executing: alter database flashback on
Cannot remove created server parameter file
Finished Duplicate Db at 17-OCT-20
RMAN>
Step 7:Connect to the newly created database.
[oracle@trichy ~]$ . ./clone.env
[oracle@trichy ~]$ sqlplus / as sysdba
SQL*Plus: Release 12.2.0.1.0 Production on Sat Oct 17 02:02:00 2020
Copyright (c) 1982, 2016, Oracle. All rights reserved.
Connected to an idle instance.
SQL> startup
ORACLE instance started.
Total System Global Area 2046820352 bytes
Fixed Size 8622480 bytes
Variable Size 587206256 bytes
Database Buffers 1442840576 bytes
Redo Buffers 8151040 bytes
Database mounted.
Database opened.
SQL> select status,instance_name from v$instance;
STATUS INSTANCE_NAME
------------ ----------------
OPEN clone
SQL> select name from v$database;
NAME
---------
CLONE
Screen shots
