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create duplicate database using rman

You want to use RMAN to create a duplicate database on the same server by using RMAN backups.

My Source Database Name is MYTEST

Target (duplicate) Database name is MYDB 

Step 1: Configure Listener.ora and tnsnames.ora files

tnsnames.ora file

MYTEST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = localhost.localdomain)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = mytest)
)
)

MYDB =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = localhost.localdomain)(PORT = 1521))
)
(CONNECT_DATA =
(SERVICE_NAME = mydb)
)
)

listener.ora file

SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(GLOBAL_DBNAME = mytest)
(ORACLE_HOME = /home/oracle/oracle/product/10.2.0/db_1)
(SID_NAME = mytest)
)
(SID_DESC =
(GLOBAL_DBNAME= mydb)
(ORACLE_HOME = /home/oracle/oracle/product/10.2.0/db_1)
(SID_NAME = mydb)
)
)

LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = localhost.localdomain)(PORT = 1521))
)
)

Step 2: create pfile for target database from source database

SQL> create pfile from spfile;

File created.

Step 3: modified parameter file for target database (duplicate) here log_file_name_convert and db_file_name_convert and control file location is important, further your choice.

*.audit_file_dest=’/home/oracle/oracle/product/10.2.0/db_1/admin/mydb/adump’
*.compatible=’10.2.0.1.0′
*.db_block_size=8192
*.db_domain=”
*.db_file_multiblock_read_count=16
*.db_name=’mydb’
*.control_files=’/home/oracle/oracle/product/10.2.0/oradata/mydb/control01.ctl’,’/home/oracle/oracle/product/10.2.0/oradata/mydb/control02.ctl’,’/home/oracle/oracle/product/10.2.0/oradata/mydb/control03.ctl’
*.db_file_name_convert=’/home/oracle/oracle/product/10.2.0/db_1/oradata/mytest’,’/home/oracle/oracle/product/10.2.0/oradata/mydb’
*.log_file_name_convert=’/home/oracle/oracle/product/10.2.0/db_1/oradata/mytest’,’/home/oracle/oracle/product/10.2.0/oradata/mydb’
*.db_recovery_file_dest=’/home/oracle/oracle/product/10.2.0/db_1/flash_recovery_area’
*.db_recovery_file_dest_size=2147483648
*.dispatchers='(PROTOCOL=TCP) (SERVICE=mydbXDB)’
*.job_queue_processes=10
*.open_cursors=300
*.pga_aggregate_target=94371840
*.processes=150
*.remote_login_passwordfile=’EXCLUSIVE’
*.sga_target=285212672
*.undo_management=’AUTO’
*.undo_tablespace=’UNDOTBS1′

Step 4: Create password file

[oracle@localhost ~]$orapwd file=orapwmydb password=oracle entries=5

Step 5: start your target database nomount stage

[oracle@localhost ~]$ export ORACLE_SID=mydb
[oracle@localhost ~]$ rlwrap sqlplus

SQL*Plus: Release 10.2.0.1.0 – Production on Tue May 25 18:22:09 2010

Copyright (c) 1982, 2005, Oracle.  All rights reserved.

Enter user-name: sys/oracle@mydb as sysdba

Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 – Production
With the Partitioning, OLAP and Data Mining options

SQL> startup nomount pfile=/home/oracle/oracle/product/10.2.0/db_1/dbs/initmydb.ora
ORACLE instance started.

Total System Global Area  285212672 bytes
Fixed Size                  1218992 bytes
Variable Size              92276304 bytes
Database Buffers          188743680 bytes
Redo Buffers                2973696 bytes
SQL> exit

Step 6: From source database

SQL> alter system switch logfile;

System altered.

SQL>

Step 7: Backup database and archivelog Source database

[oracle@localhost root]$ rlwrap rman target sys/azar@mytest

Recovery Manager: Release 10.2.0.1.0 – Production on Tue May 25 19:56:10 2010

Copyright (c) 1982, 2005, Oracle.  All rights reserved.

connected to target database: MYTEST (DBID=2419076664)

RMAN> backup database plus archivelog;

Starting backup at 25-MAY-10
current log archived

input datafile fno=00001 name=/home/oracle/oracle/product/10.2.0/db_1/oradata/mytest/system01.dbf
input datafile fno=00003 name=/home/oracle/oracle/product/10.2.0/db_1/oradata/mytest/sysaux01.dbf
input datafile fno=00002 name=/home/oracle/oracle/product/10.2.0/db_1/oradata/mytest/undotbs01.dbf
input datafile fno=00004 name=/home/oracle/oracle/product/10.2.0/db_1/oradata/mytest/users01.dbf
channel ORA_DISK_1: starting piece 1 at 25-MAY-10
channel ORA_DISK_1: finished piece 1 at 25-MAY-10

(skipped)

Starting Control File and SPFILE Autobackup at 25-MAY-10
piece handle=/home/oracle/oracle/product/10.2.0/db_1/flash_recovery_area/MYTEST/autobackup/2010_05_25/o1_mf_s_719956316_5zr01f85_.bkp comment=NONE
Finished Control File and SPFILE Autobackup at 25-MAY-10

Step 8: Connect auxiliary database

RMAN> connect auxiliary sys/oracle@mydb;

connected to auxiliary database: MYDB (not mounted)

Step 9: Create duplicate database.

RMAN> duplicate target database to mydb;

Starting Duplicate Db at 25-MAY-10
using target database control file instead of recovery catalog
allocated channel: ORA_AUX_DISK_1
channel ORA_AUX_DISK_1: sid=156 devtype=DISK

contents of Memory Script:
{
set until scn  470310;
set newname for datafile  1 to
“/home/oracle/oracle/product/10.2.0/oradata/mydb/system01.dbf”;
set newname for datafile  2 to
“/home/oracle/oracle/product/10.2.0/oradata/mydb/undotbs01.dbf”;
set newname for datafile  3 to
“/home/oracle/oracle/product/10.2.0/oradata/mydb/sysaux01.dbf”;
set newname for datafile  4 to
“/home/oracle/oracle/product/10.2.0/oradata/mydb/users01.dbf”;
restore
check readonly
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 25-MAY-10
using channel ORA_AUX_DISK_1

skipping datafile 1; already restored to file /home/oracle/oracle/product/10.2.0/oradata/mydb/system01.dbf
skipping datafile 2; already restored to file /home/oracle/oracle/product/10.2.0/oradata/mydb/undotbs01.dbf
skipping datafile 3; already restored to file /home/oracle/oracle/product/10.2.0/oradata/mydb/sysaux01.dbf
skipping datafile 4; already restored to file /home/oracle/oracle/product/10.2.0/oradata/mydb/users01.dbf
restore not done; all files readonly, offline, or already restored
Finished restore at 25-MAY-10
sql statement: CREATE CONTROLFILE REUSE SET DATABASE “MYDB” RESETLOGS ARCHIVELOG
MAXLOGFILES     16
MAXLOGMEMBERS      3
MAXDATAFILES      100
MAXINSTANCES     8
MAXLOGHISTORY      292
LOGFILE
GROUP  1 ( ‘/home/oracle/oracle/product/10.2.0/oradata/mydb/redo01.log’ ) SIZE 50 M  REUSE,
GROUP  2 ( ‘/home/oracle/oracle/product/10.2.0/oradata/mydb/redo02.log’ ) SIZE 50 M  REUSE,
GROUP  3 ( ‘/home/oracle/oracle/product/10.2.0/oradata/mydb/redo03.log’ ) SIZE 50 M  REUSE
DATAFILE
‘/home/oracle/oracle/product/10.2.0/oradata/mydb/system01.dbf’
CHARACTER SET WE8ISO8859P1

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

released channel: ORA_AUX_DISK_1
datafile 2 switched to datafile copy
input datafile copy recid=1 stamp=719956582 filename=/home/oracle/oracle/product/10.2.0/oradata/mydb/undotbs01.dbf
datafile 3 switched to datafile copy
input datafile copy recid=2 stamp=719956582 filename=/home/oracle/oracle/product/10.2.0/oradata/mydb/sysaux01.dbf
datafile 4 switched to datafile copy
input datafile copy recid=3 stamp=719956582 filename=/home/oracle/oracle/product/10.2.0/oradata/mydb/users01.dbf

contents of Memory Script:
{
set until scn  470310;
recover
clone database
delete archivelog
;
}
executing Memory Script

executing command: SET until clause

Starting recover at 25-MAY-10
allocated channel: ORA_AUX_DISK_1
channel ORA_AUX_DISK_1: sid=156 devtype=DISK

starting media recovery

archive log thread 1 sequence 9 is already on disk as file /home/oracle/oracle/product/10.2.0/db_1/flash_recovery_area/MYTEST/archivelog/2010_05_25/o1_mf_1_9_5zr01bl8_.arc
archive log filename=/home/oracle/oracle/product/10.2.0/db_1/flash_recovery_area/MYTEST/archivelog/2010_05_25/o1_mf_1_9_5zr01bl8_.arc thread=1 sequence=9
media recovery complete, elapsed time: 00:00:02
Finished recover at 25-MAY-10

contents of Memory Script:
{
shutdown clone;
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     285212672 bytes

Fixed Size                     1218992 bytes
Variable Size                 92276304 bytes
Database Buffers             188743680 bytes
Redo Buffers                   2973696 bytes
sql statement: CREATE CONTROLFILE REUSE SET DATABASE “MYDB” RESETLOGS ARCHIVELOG
MAXLOGFILES     16
MAXLOGMEMBERS      3
MAXDATAFILES      100
MAXINSTANCES     8
MAXLOGHISTORY      292
LOGFILE
GROUP  1 ( ‘/home/oracle/oracle/product/10.2.0/oradata/mydb/redo01.log’ ) SIZE 50 M  REUSE,
GROUP  2 ( ‘/home/oracle/oracle/product/10.2.0/oradata/mydb/redo02.log’ ) SIZE 50 M  REUSE,
GROUP  3 ( ‘/home/oracle/oracle/product/10.2.0/oradata/mydb/redo03.log’ ) SIZE 50 M  REUSE
DATAFILE
‘/home/oracle/oracle/product/10.2.0/oradata/mydb/system01.dbf’
CHARACTER SET WE8ISO8859P1

contents of Memory Script:
{
set newname for tempfile  1 to
“/home/oracle/oracle/product/10.2.0/oradata/mydb/temp01.dbf”;
switch clone tempfile all;
catalog clone datafilecopy  “/home/oracle/oracle/product/10.2.0/oradata/mydb/undotbs01.dbf”;
catalog clone datafilecopy  “/home/oracle/oracle/product/10.2.0/oradata/mydb/sysaux01.dbf”;
catalog clone datafilecopy  “/home/oracle/oracle/product/10.2.0/oradata/mydb/users01.dbf”;
switch clone datafile all;
}
executing Memory Script

executing command: SET NEWNAME

renamed temporary file 1 to /home/oracle/oracle/product/10.2.0/oradata/mydb/temp01.dbf in control file

cataloged datafile copy
datafile copy filename=/home/oracle/oracle/product/10.2.0/oradata/mydb/undotbs01.dbf recid=1 stamp=719956593

cataloged datafile copy
datafile copy filename=/home/oracle/oracle/product/10.2.0/oradata/mydb/sysaux01.dbf recid=2 stamp=719956593

cataloged datafile copy
datafile copy filename=/home/oracle/oracle/product/10.2.0/oradata/mydb/users01.dbf recid=3 stamp=719956593

datafile 2 switched to datafile copy
input datafile copy recid=1 stamp=719956593 filename=/home/oracle/oracle/product/10.2.0/oradata/mydb/undotbs01.dbf
datafile 3 switched to datafile copy
input datafile copy recid=2 stamp=719956593 filename=/home/oracle/oracle/product/10.2.0/oradata/mydb/sysaux01.dbf
datafile 4 switched to datafile copy
input datafile copy recid=3 stamp=719956593 filename=/home/oracle/oracle/product/10.2.0/oradata/mydb/users01.dbf

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

database opened
Finished Duplicate Db at 25-MAY-10

RMAN>

Step 10: My duplicate database succesfully created.

Enter user-name: sys/oracle@mydb as sysdba

Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 – Production
With the Partitioning, OLAP and Data Mining options

SQL> select status from v$instance;

STATUS
————
OPEN

SQL> select name from V$database;

NAME
———
MYDB

SQL>

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ORA-19566: exceeded limit of 0 corrupt blocks

 

When i try to take backup, it will shows block corrupted errors,

RMAN> backup database;

Starting backup at 25-MAY-10
using channel ORA_DISK_1
channel ORA_DISK_1: starting full datafile backupset
channel ORA_DISK_1: specifying datafile(s) in backupset
input datafile fno=00001 name=/home/oracle/oracle/product/10.2.0/oradata/orcl/system01.dbf
input datafile fno=00003 name=/home/oracle/oracle/product/10.2.0/oradata/orcl/sysaux01.dbf
input datafile fno=00005 name=/home/oracle/oracle/product/10.2.0/oradata/orcl/example01.dbf
input datafile fno=00006 name=/home/oracle/oracle/mytest/test01.dbf
input datafile fno=00002 name=/home/oracle/oracle/product/10.2.0/oradata/orcl/undotbs01.dbf
input datafile fno=00004 name=/home/oracle/oracle/product/10.2.0/oradata/orcl/users01.dbf
channel ORA_DISK_1: starting piece 1 at 25-MAY-10
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03009: failure of backup command on ORA_DISK_1 channel at 05/25/2010 13:22:00
ORA-19566: exceeded limit of 0 corrupt blocks for file /home/oracle/oracle/product/10.2.0/oradata/orcl/system01.dbf

In this case, i have checked my alert log file and find out which block corrupted and reocvered using rman.

My alertlog file

Hex dump of (file 1, block 61441) in trace file /home/oracle/oracle/product/10.2.0/db_1/admin/orcl/udump/orcl_ora_17556.trc
Corrupt block relative dba: 0x0040f001 (file 1, block 61441)
Completely zero block found during backing up datafile
Reread of blocknum=61441, file=/home/oracle/oracle/product/10.2.0/oradata/orcl/system01.dbf. found same corrupt data

RMAN> blockrecover datafile 1 block 61441;

Starting blockrecover at 25-MAY-10
using channel ORA_DISK_1

(skipped)

Finished blockrecover at 25-MAY-10.