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Restore RMAN backup to another server for testing disaster recovery procedures as well as for cloning

  • Posted by Gavin Soorma
  • On July 5, 2013
  • 0 Comments
  • Disaster Recovery, loss of all database files, resetlogs, restore, rman, rman clone

This note explains the procedure used to restore an Oracle Suggested Strategy incremental backup on another server.

This is useful when we have to do periodic  testing of disaster recovery procedures where we simulate a scenario when the complete database server has crashed and a new server has been provisioned.

But let us assume that the directory structure on the new or target server is different to that of the source server.

So in this case the backup has been restored to the staging location /home/oracle/stage on the new server  and all the database files are being restored in a different location to that on the source – /home/oracle/sqlfun

 

Restore the SPFILE

RMAN> startup nomount force;

startup failed: ORA-01078: failure in processing system parameters
LRM-00109: could not open parameter file '/u01/app/oracle/product/11.2.0/dbhome_2/dbs/initsqlfun.ora'

starting Oracle instance without parameter file for retrieval of spfile
Oracle instance started

Total System Global Area     158662656 bytes

Fixed Size                     2226456 bytes
Variable Size                104859368 bytes
Database Buffers              46137344 bytes
Redo Buffers                   5439488 bytes

RMAN> restore spfile from '/home/oracle/stage/o1_mf_s_819826669_8x7w7g70_.bkp';

Starting restore at 04-JUL-13
using target database control file instead of recovery catalog
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=162 device type=DISK

channel ORA_DISK_1: restoring spfile from AUTOBACKUP /home/oracle/stage/o1_mf_s_819826669_8x7w7g70_.bkp
channel ORA_DISK_1: SPFILE restore from AUTOBACKUP complete
Finished restore at 04-JUL-13

Create the PFILE from SPFILE and make parameter changes as required

$ sqlplus sys as sysdba

SQL*Plus: Release 11.2.0.3.0 Production on Thu Jul 4 09:43:48 2013

Copyright (c) 1982, 2011, Oracle.  All rights reserved.

Enter password:
Connected to an idle instance.

SQL> create pfile from spfile;

File created.

Note- make required changes here in the init.ora file to take care of new directories for control files, audit dump, fast recovery area etc

SQL> create spfile from pfile;

File created.

 

Restore the Control Files

RMAN> restore controlfile from '/home/oracle/stage/o1_mf_s_819826669_8x7w7g70_.bkp';

Starting restore at 04-JUL-13
using target database control file instead of recovery catalog
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=134 device type=DISK

channel ORA_DISK_1: restoring control file
channel ORA_DISK_1: restore complete, elapsed time: 00:00:01
output file name=/home/oracle/sqlfun/control01.ctl
output file name=/home/oracle/sqlfun/control02.ctl
Finished restore at 04-JUL-13

 

Mount the database and catalog the backup pieces which have been restored in the new location

RMAN> alter database mount;

database mounted
released channel: ORA_DISK_1

RMAN> catalog start with '/home/oracle/stage';

Starting implicit crosscheck backup at 04-JUL-13
using target database control file instead of recovery catalog
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=134 device type=DISK
Crosschecked 25 objects
Finished implicit crosscheck backup at 04-JUL-13

Starting implicit crosscheck copy at 04-JUL-13
using channel ORA_DISK_1
Crosschecked 10 objects
Finished implicit crosscheck copy at 04-JUL-13

searching for all files in the recovery area
cataloging files...
cataloging done

List of Cataloged Files
=======================
File Name: /u01/app/oracle/flash_recovery_area/SQLFUN/autobackup/2013_07_04/o1_mf_n_819884144_8x9ncjfl_.bkp
File Name: /u01/app/oracle/flash_recovery_area/SQLFUN/archivelog/2013_07_04/2013_07_03/o1_mf_1_33_8x84ld7x_.arc
File Name: /u01/app/oracle/flash_recovery_area/SQLFUN/archivelog/2013_07_04/2013_07_03/o1_mf_1_35_8x8db3hp_.arc
File Name: /u01/app/oracle/flash_recovery_area/SQLFUN/archivelog/2013_07_04/2013_07_03/o1_mf_1_36_8x8dbgcm_.arc
File Name: /u01/app/oracle/flash_recovery_area/SQLFUN/archivelog/2013_07_04/2013_07_03/o1_mf_1_34_8x8d9y2h_.arc
File Name: /u01/app/oracle/flash_recovery_area/SQLFUN/archivelog/2013_07_04/2013_07_03/o1_mf_1_32_8x6mflv0_.arc

searching for all files that match the pattern /home/oracle/stage

List of Files Unknown to the Database
=====================================
File Name: /home/oracle/stage/o1_mf_sysaux_7zpgb1hd_.dbf
File Name: /home/oracle/stage/o1_mf_nnnd1_ORA_OEM_LEVEL_0_8x7w6zcb_.bkp
File Name: /home/oracle/stage/o1_mf_nnnd1_ORA_OEM_LEVEL_0_8x7w76jv_.bkp
File Name: /home/oracle/stage/o1_mf_undotbs1_7zpgck9f_.dbf
File Name: /home/oracle/stage/o1_mf_nnnd1_ORA_OEM_LEVEL_0_8x7w65l9_.bkp
File Name: /home/oracle/stage/o1_mf_example_7zgkdp6p_.dbf
File Name: /home/oracle/stage/o1_mf_threaten_7zpgbyck_.dbf
File Name: /home/oracle/stage/o1_mf_users_7zpgcnno_.dbf
File Name: /home/oracle/stage/o1_mf_s_819826669_8x7w7g70_.bkp
File Name: /home/oracle/stage/o1_mf_index_da_7zgkcz04_.dbf
File Name: /home/oracle/stage/o1_mf_example__7zpgcg0x_.dbf
File Name: /home/oracle/stage/o1_mf_system_7zpgbh79_.dbf
File Name: /home/oracle/stage/o1_mf_nnnd1_ORA_OEM_LEVEL_0_8x7w7b0f_.bkp

Do you really want to catalog the above files (enter YES or NO)? YES
cataloging files...
cataloging done

List of Cataloged Files
=======================
File Name: /home/oracle/stage/o1_mf_sysaux_7zpgb1hd_.dbf
File Name: /home/oracle/stage/o1_mf_nnnd1_ORA_OEM_LEVEL_0_8x7w6zcb_.bkp
File Name: /home/oracle/stage/o1_mf_nnnd1_ORA_OEM_LEVEL_0_8x7w76jv_.bkp
File Name: /home/oracle/stage/o1_mf_undotbs1_7zpgck9f_.dbf
File Name: /home/oracle/stage/o1_mf_nnnd1_ORA_OEM_LEVEL_0_8x7w65l9_.bkp
File Name: /home/oracle/stage/o1_mf_example_7zgkdp6p_.dbf
File Name: /home/oracle/stage/o1_mf_threaten_7zpgbyck_.dbf
File Name: /home/oracle/stage/o1_mf_users_7zpgcnno_.dbf
File Name: /home/oracle/stage/o1_mf_s_819826669_8x7w7g70_.bkp
File Name: /home/oracle/stage/o1_mf_index_da_7zgkcz04_.dbf
File Name: /home/oracle/stage/o1_mf_example__7zpgcg0x_.dbf
File Name: /home/oracle/stage/o1_mf_system_7zpgbh79_.dbf
File Name: /home/oracle/stage/o1_mf_nnnd1_ORA_OEM_LEVEL_0_8x7w7b0f_.bkp

 

Generate the SET NEWNAME FOR DATAFILE command

Note:

Since the OSS backup image copy is based on Oracle Managed File format (OMF), I find this error even though we have set the DB_FILE_NAME_CONVERT parameter to account for the directory path change between source and target.

RMAN is not restoring the data files in the new location but is looking for the directory path which existed on the source database, but which is not present on the new or target server where we are doing the restore.

 

RMAN> restore database;

Starting restore at 04-JUL-13
using channel ORA_DISK_1

channel ORA_DISK_1: restoring datafile 00001
input datafile copy RECID=3060 STAMP=819884997 file name=/home/oracle/stage/o1_mf_system_7zpgbh79_.dbf
destination for restore of datafile 00001: /u01/app/oracle/oradata/sqlfun/system01.dbf
ORA-19504: failed to create file “/u01/app/oracle/oradata/sqlfun/system01.dbf”
ORA-27040: file create error, unable to create file
Linux-x86_64 Error: 2: No such file or directory
Additional information: 1
ORA-19600: input file is datafile-copy 3060 (/home/oracle/stage/o1_mf_system_7zpgbh79_.dbf)
ORA-19601: output file is datafile 1 (/u01/app/oracle/oradata/sqlfun/system01.dbf)

 

So to work around this we will generate a text file via SQL*PLUS which will contain the SET NEWNAME commands and call this file from RMAN.

These are the contents of the text file rename_files.sql

set head off pages 0 feed off echo off verify off
set lines 200
spool rename_datafiles.lst
select ‘SET NEWNAME FOR DATAFILE ‘ || FILE# || ‘ TO ”’ || ‘/home/oracle/sqlfun/’ || substr(name,instr(name,’/’,-1)+1) || ”’;’ from v$datafile;
spool off
exit;

$ sqlplus sys as sysdba

SQL*Plus: Release 11.2.0.3.0 Production on Thu Jul 4 09:52:44 2013

Copyright (c) 1982, 2011, Oracle.  All rights reserved.

Enter password:

Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options

SQL> @rename_files.sql
SET NEWNAME FOR DATAFILE 1 TO '/home/oracle/sqlfun/system01.dbf';
SET NEWNAME FOR DATAFILE 2 TO '/home/oracle/sqlfun/sysaux01.dbf';
SET NEWNAME FOR DATAFILE 3 TO '/home/oracle/sqlfun/undotbs01.dbf';
SET NEWNAME FOR DATAFILE 4 TO '/home/oracle/sqlfun/users01.dbf';
SET NEWNAME FOR DATAFILE 5 TO '/home/oracle/sqlfun/threatened_fauna_data.dbf';
SET NEWNAME FOR DATAFILE 6 TO '/home/oracle/sqlfun/example_temp01.dbf';
SET NEWNAME FOR DATAFILE 7 TO '/home/oracle/sqlfun/EXAMPLE_5';
SET NEWNAME FOR DATAFILE 8 TO '/home/oracle/sqlfun/INDEX_DATA_6';

 

Restore and Recover the database
Now pass this file name to the RMAN run block

RMAN> run {
2> @rename_datafiles.lst
3> SET NEWNAME FOR DATAFILE 1 TO '/home/oracle/sqlfun/system01.dbf';
4> SET NEWNAME FOR DATAFILE 2 TO '/home/oracle/sqlfun/sysaux01.dbf';
5> SET NEWNAME FOR DATAFILE 3 TO '/home/oracle/sqlfun/undotbs01.dbf';
6> SET NEWNAME FOR DATAFILE 4 TO '/home/oracle/sqlfun/users01.dbf';
7> SET NEWNAME FOR DATAFILE 5 TO '/home/oracle/sqlfun/threatened_fauna_data.dbf';
8> SET NEWNAME FOR DATAFILE 6 TO '/home/oracle/sqlfun/example_temp01.dbf';
9> SET NEWNAME FOR DATAFILE 7 TO '/home/oracle/sqlfun/EXAMPLE_5';
10> SET NEWNAME FOR DATAFILE 8 TO '/home/oracle/sqlfun/INDEX_DATA_6';
11> **end-of-file**
12> restore database;
13> switch datafile all;
14> recover database;
15> }

executing command: SET NEWNAME

executing command: SET NEWNAME

executing command: SET NEWNAME

executing command: SET NEWNAME

executing command: SET NEWNAME

executing command: SET NEWNAME

executing command: SET NEWNAME

executing command: SET NEWNAME

Starting restore at 04-JUL-13
using target database control file instead of recovery catalog
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=125 device type=DISK

channel ORA_DISK_1: restoring datafile 00001
input datafile copy RECID=3060 STAMP=819884997 file name=/home/oracle/stage/o1_mf_system_7zpgbh79_.dbf
destination for restore of datafile 00001: /home/oracle/sqlfun/system01.dbf
channel ORA_DISK_1: copied datafile copy of datafile 00001
output file name=/home/oracle/sqlfun/system01.dbf RECID=3061 STAMP=819885296
channel ORA_DISK_1: restoring datafile 00002
input datafile copy RECID=3053 STAMP=819884997 file name=/home/oracle/stage/o1_mf_sysaux_7zpgb1hd_.dbf
destination for restore of datafile 00002: /home/oracle/sqlfun/sysaux01.dbf
channel ORA_DISK_1: copied datafile copy of datafile 00002
output file name=/home/oracle/sqlfun/sysaux01.dbf RECID=3062 STAMP=819885313
channel ORA_DISK_1: restoring datafile 00003
input datafile copy RECID=3054 STAMP=819884997 file name=/home/oracle/stage/o1_mf_undotbs1_7zpgck9f_.dbf
destination for restore of datafile 00003: /home/oracle/sqlfun/undotbs01.dbf
channel ORA_DISK_1: copied datafile copy of datafile 00003
output file name=/home/oracle/sqlfun/undotbs01.dbf RECID=3063 STAMP=819885321
channel ORA_DISK_1: restoring datafile 00004
input datafile copy RECID=3057 STAMP=819884997 file name=/home/oracle/stage/o1_mf_users_7zpgcnno_.dbf
destination for restore of datafile 00004: /home/oracle/sqlfun/users01.dbf
channel ORA_DISK_1: copied datafile copy of datafile 00004
output file name=/home/oracle/sqlfun/users01.dbf RECID=3064 STAMP=819885322
channel ORA_DISK_1: restoring datafile 00005
input datafile copy RECID=3056 STAMP=819884997 file name=/home/oracle/stage/o1_mf_threaten_7zpgbyck_.dbf
destination for restore of datafile 00005: /home/oracle/sqlfun/threatened_fauna_data.dbf
channel ORA_DISK_1: copied datafile copy of datafile 00005
output file name=/home/oracle/sqlfun/threatened_fauna_data.dbf RECID=3065 STAMP=819885327
channel ORA_DISK_1: restoring datafile 00006
input datafile copy RECID=3059 STAMP=819884997 file name=/home/oracle/stage/o1_mf_example__7zpgcg0x_.dbf
destination for restore of datafile 00006: /home/oracle/sqlfun/example_temp01.dbf
channel ORA_DISK_1: copied datafile copy of datafile 00006
output file name=/home/oracle/sqlfun/example_temp01.dbf RECID=3066 STAMP=819885331
channel ORA_DISK_1: restoring datafile 00007
input datafile copy RECID=3055 STAMP=819884997 file name=/home/oracle/stage/o1_mf_example_7zgkdp6p_.dbf
destination for restore of datafile 00007: /home/oracle/sqlfun/EXAMPLE_5
channel ORA_DISK_1: copied datafile copy of datafile 00007
output file name=/home/oracle/sqlfun/EXAMPLE_5 RECID=3067 STAMP=819885334
channel ORA_DISK_1: restoring datafile 00008
input datafile copy RECID=3058 STAMP=819884997 file name=/home/oracle/stage/o1_mf_index_da_7zgkcz04_.dbf
destination for restore of datafile 00008: /home/oracle/sqlfun/INDEX_DATA_6
channel ORA_DISK_1: copied datafile copy of datafile 00008
output file name=/home/oracle/sqlfun/INDEX_DATA_6 RECID=3068 STAMP=819885339
Finished restore at 04-JUL-13

datafile 1 switched to datafile copy
input datafile copy RECID=3069 STAMP=819885343 file name=/home/oracle/sqlfun/system01.dbf
datafile 2 switched to datafile copy
input datafile copy RECID=3070 STAMP=819885343 file name=/home/oracle/sqlfun/sysaux01.dbf
datafile 3 switched to datafile copy
input datafile copy RECID=3071 STAMP=819885343 file name=/home/oracle/sqlfun/undotbs01.dbf
datafile 4 switched to datafile copy
input datafile copy RECID=3072 STAMP=819885343 file name=/home/oracle/sqlfun/users01.dbf
datafile 5 switched to datafile copy
input datafile copy RECID=3073 STAMP=819885343 file name=/home/oracle/sqlfun/threatened_fauna_data.dbf
datafile 6 switched to datafile copy
input datafile copy RECID=3074 STAMP=819885343 file name=/home/oracle/sqlfun/example_temp01.dbf
datafile 7 switched to datafile copy
input datafile copy RECID=3075 STAMP=819885343 file name=/home/oracle/sqlfun/EXAMPLE_5
datafile 8 switched to datafile copy
input datafile copy RECID=3076 STAMP=819885343 file name=/home/oracle/sqlfun/INDEX_DATA_6

Starting recover at 04-JUL-13
using channel ORA_DISK_1
channel ORA_DISK_1: starting incremental datafile backup set restore
channel ORA_DISK_1: specifying datafile(s) to restore from backup set
destination for restore of datafile 00001: /home/oracle/sqlfun/system01.dbf
destination for restore of datafile 00002: /home/oracle/sqlfun/sysaux01.dbf
destination for restore of datafile 00007: /home/oracle/sqlfun/EXAMPLE_5
destination for restore of datafile 00008: /home/oracle/sqlfun/INDEX_DATA_6
channel ORA_DISK_1: reading from backup piece /home/oracle/stage/o1_mf_nnnd1_ORA_OEM_LEVEL_0_8x7w65l9_.bkp
channel ORA_DISK_1: piece handle=/home/oracle/stage/o1_mf_nnnd1_ORA_OEM_LEVEL_0_8x7w65l9_.bkp tag=ORA_OEM_LEVEL_0
channel ORA_DISK_1: restored backup piece 1
channel ORA_DISK_1: restore complete, elapsed time: 00:00:03
channel ORA_DISK_1: starting incremental datafile backup set restore
channel ORA_DISK_1: specifying datafile(s) to restore from backup set
destination for restore of datafile 00003: /home/oracle/sqlfun/undotbs01.dbf
channel ORA_DISK_1: reading from backup piece /home/oracle/stage/o1_mf_nnnd1_ORA_OEM_LEVEL_0_8x7w6zcb_.bkp
channel ORA_DISK_1: piece handle=/home/oracle/stage/o1_mf_nnnd1_ORA_OEM_LEVEL_0_8x7w6zcb_.bkp tag=ORA_OEM_LEVEL_0
channel ORA_DISK_1: restored backup piece 1
channel ORA_DISK_1: restore complete, elapsed time: 00:00:01
channel ORA_DISK_1: starting incremental datafile backup set restore
channel ORA_DISK_1: specifying datafile(s) to restore from backup set
destination for restore of datafile 00004: /home/oracle/sqlfun/users01.dbf
destination for restore of datafile 00005: /home/oracle/sqlfun/threatened_fauna_data.dbf
channel ORA_DISK_1: reading from backup piece /home/oracle/stage/o1_mf_nnnd1_ORA_OEM_LEVEL_0_8x7w76jv_.bkp
channel ORA_DISK_1: piece handle=/home/oracle/stage/o1_mf_nnnd1_ORA_OEM_LEVEL_0_8x7w76jv_.bkp tag=ORA_OEM_LEVEL_0
channel ORA_DISK_1: restored backup piece 1
channel ORA_DISK_1: restore complete, elapsed time: 00:00:01
channel ORA_DISK_1: starting incremental datafile backup set restore
channel ORA_DISK_1: specifying datafile(s) to restore from backup set
destination for restore of datafile 00006: /home/oracle/sqlfun/example_temp01.dbf
channel ORA_DISK_1: reading from backup piece /home/oracle/stage/o1_mf_nnnd1_ORA_OEM_LEVEL_0_8x7w7b0f_.bkp
channel ORA_DISK_1: piece handle=/home/oracle/stage/o1_mf_nnnd1_ORA_OEM_LEVEL_0_8x7w7b0f_.bkp tag=ORA_OEM_LEVEL_0
channel ORA_DISK_1: restored backup piece 1
channel ORA_DISK_1: restore complete, elapsed time: 00:00:01

starting media recovery

archived log for thread 1 with sequence 33 is already on disk as file /u01/app/oracle/flash_recovery_area/SQLFUN/archivelog/2013_07_04/2013_07_03/o1_mf_1_33_8x84ld7x_.arc
archived log for thread 1 with sequence 34 is already on disk as file /u01/app/oracle/flash_recovery_area/SQLFUN/archivelog/2013_07_04/2013_07_03/o1_mf_1_34_8x8d9y2h_.arc
archived log for thread 1 with sequence 35 is already on disk as file /u01/app/oracle/flash_recovery_area/SQLFUN/archivelog/2013_07_04/2013_07_03/o1_mf_1_35_8x8db3hp_.arc
archived log for thread 1 with sequence 36 is already on disk as file /u01/app/oracle/flash_recovery_area/SQLFUN/archivelog/2013_07_04/2013_07_03/o1_mf_1_36_8x8dbgcm_.arc
archived log file name=/u01/app/oracle/flash_recovery_area/SQLFUN/archivelog/2013_07_04/2013_07_03/o1_mf_1_33_8x84ld7x_.arc thread=1 sequence=33
archived log file name=/u01/app/oracle/flash_recovery_area/SQLFUN/archivelog/2013_07_04/2013_07_03/o1_mf_1_34_8x8d9y2h_.arc thread=1 sequence=34
archived log file name=/u01/app/oracle/flash_recovery_area/SQLFUN/archivelog/2013_07_04/2013_07_03/o1_mf_1_35_8x8db3hp_.arc thread=1 sequence=35
archived log file name=/u01/app/oracle/flash_recovery_area/SQLFUN/archivelog/2013_07_04/2013_07_03/o1_mf_1_36_8x8dbgcm_.arc thread=1 sequence=36
unable to find archived log
archived log thread=1 sequence=37
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of recover command at 07/04/2013 09:55:58
RMAN-06054: media recovery requesting unknown archived log for thread 1 with sequence 37 and starting SCN of 33985482

RMAN>

the error can be ignored as RMAN has applied all the available archive log files and is now trying to apply a non-existent archive log file.
Open the database with RESETLOGS
The RESETLOGS command will fail because we do not have the same directory path which existed on the source for the Online Redo Log files.

So we create a script which will generate the new online redo log file names.

These are the contents of the rename_logfiles.sql file

set head off pages 0 feed off echo off verify off
set lines 200
spool rename_logfiles.lst
select ‘alter database rename file ”’|| member ||”’ ‘||chr(10)|| ‘ TO ”’ || ‘/home/oracle/sqlfun/’ || substr(member,instr(member,’/’,-1)+1) || ”’;’ from v$logfile;
spool off
exit;

$ sqlplus sys as sysdba

SQL*Plus: Release 11.2.0.3.0 Production on Thu Jul 4 10:05:17 2013

Copyright (c) 1982, 2011, Oracle.  All rights reserved.

Enter password:

Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options

SQL> @rename_logfiles.sql
alter database rename file  '/u01/app/oracle/oradata/sqlfun/redo03.log'
TO '/home/oracle/sqlfun/redo03.log';

alter database rename file  '/u01/app/oracle/oradata/sqlfun/redo02.log'
TO '/home/oracle/sqlfun/redo02.log';

alter database rename file  '/u01/app/oracle/oradata/sqlfun/redo01.log'
TO '/home/oracle/sqlfun/redo01.log';

Note – we can do all this from the RMAN prompt as well using the RMAN SQL command. But for this example we do it from SQL*PLUS

$ sqlplus sys as sysdba

SQL*Plus: Release 11.2.0.3.0 Production on Thu Jul 4 10:50:44 2013

Copyright (c) 1982, 2011, Oracle.  All rights reserved.

Enter password:

Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options

SQL> @rename_logfiles.lst

Database altered.

Database altered.

Database altered.

SQL> alter database open resetlogs;

Database altered.
 

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