Backup and Restore of database on 2-Node RAC Introduction:

This document provides a high level overview and steps to restore a 2-node RAC database which we did in one of our environments recently.

Environment Details:

DBName : TEST1 Oracle version: 11gR2 Steps:

1. Take a backup of the database or else use the last successful backup from tape / disk

2. Created the parameter file with the bare minimum parameters for the database to

startup.

vi initTEST1.ora *.audit_file_dest='/u01/app/oracle/admin/TEST1/adump' *.audit_trail='db' *.compatible='11.2.0.2.0'

*.control_files='+DATA','+FRA' *.db_block_size=8192 *.db_create_file_dest='+DATA' *.db_create_online_log_dest_1='+DATA'

*.db_name='RAC' *.diagnostic_dest='/u01/app/oracle' *.log_archive_dest_1='LOCATION=+FRA' *.log_archive_format='%t_%s_%r.dbf' *.memory_target=1658847232

*.open_cursors=300 *.processes=150 *.remote_login_passwordfile='EXCLUSIVE' *.undo_tablespace='UNDOTBS1'

*.cluster_database=false

3. Start the database in NOMOUNT stage for restore and recovery from the backup: [oracle@MYHOST1 dbs]$ sqlplus / as sysdba

SQL*Plus: Release 11.2.0.2.0 Production on Thu Aug 1 05:58:30 2013 Copyright (c) 1982, 2009, Oracle. All rights reserved. Connected to an idle instance.

SQL> startup nomount pfile='initTEST1.ora'

ORACLE instance started. Total System Global Area 1653518336 bytes Fixed Size 2213896 bytes

Variable Size 956303352 bytes Database Buffers 687865856 bytes Redo Buffers 7135232 bytes

SQL> exit

4. Connect to the Oracle Recovery Manager and restore the control file associated with the recent backup that is planned to be restored.

Connect to RMAN: [oracle@MYHOST1 dbs]$ rman target /

Recovery Manager: Release 11.2.0.2.0 - Production on Thu Aug 1 05:59:28 2013 Copyright (c) 1982, 2009, Oracle and/or its affiliates. All rights reserved. connected to target database: RAC (not mounted) RMAN> restore controlfile from autobackup

Starting restore at 17-JUN-14 using target database control file instead of recovery catalog allocated channel: ORA_DISK_1 channel ORA_DISK_1: SID=29 device type=DISK

channel ORA_DISK_1: restoring control file channel ORA_DISK_1: restore complete, elapsed time: 00:00:08 output file name=+DATA/TEST1/controlfile/current.236.7445645 output file name=+FRA/TEST1/controlfile/current.235.7445645 Finished restore at 17-JUN-14

RMAN> alter database mount; database mounted released channel: ORA_DISK_1

5. Initiate a restore of the database once the control file is restored and the DB is in mount state as shown below.

RMAN> restore database; Starting restore at 17-JUN-14

allocated channel: ORA_DISK_1 channel ORA_DISK_1: SID=29 device type=DISK channel ORA_DISK_1: starting datafile backup set restore channel ORA_DISK_1: specifying datafile(s) to restore from backup set

channel ORA_DISK_1: restoring datafile 00001 to +DATA/TEST1/system.356.1123822

channel ORA_DISK_1: restoring datafile 00004 to +DATA/TEST1/users. 356.1223822 channel ORA_DISK_1: reading from backup piece channel ORA_DISK_1: piece

channel ORA_DISK_1: restored backup piece 1 channel ORA_DISK_1: restore complete, elapsed time: 00:00:45 channel ORA_DISK_1: starting datafile backup set restore channel ORA_DISK_1: specifying datafile(s) to restore from backup set

channel ORA_DISK_1: restoring datafile 00003 to +DATA/rac/datafile/undotbs1.314.822277039 channel ORA_DISK_1: restoring datafile 00005 to +DATA/rac/datafile/undotbs2.315.822277039 channel ORA_DISK_1: reading from backup piece channel ORA_DISK_1: piece

channel ORA_DISK_1: restored backup piece 1 channel ORA_DISK_1: restore complete, elapsed time: 00:00:15 channel ORA_DISK_1: starting datafile backup set restore channel ORA_DISK_1: specifying datafile(s) to restore from backup set

channel ORA_DISK_1: restoring datafile 00002 to +DATA/ TEST1/sysaux.311.822277081 channel ORA_DISK_1: reading from backup piece channel ORA_DISK_1: piece channel ORA_DISK_1: restored backup piece 1

channel ORA_DISK_1: restore complete, elapsed time: 00:00:36 Finished restore at 17-JUN-14 Recover the database

RMAN> recover database; Starting recover at 17-JUN-14

using channel ORA_DISK_1 starting media recovery archived log for thread 1 with sequence 8 is already on disk as file

+FRA/TEST1/2014_06_17/thread_1_seq_8.412.822282953 archived log for thread 2 with sequence 6 is already on disk as file +FRA/TEST1/2014_06_17/thread_2_seq_6.413.822282955 archived log file name=+FRA/TEST1/2014_06_17/thread_1_seq_8.412.822282953 thread=1

sequence=8 archived log file name=+FRA/TEST1/2014_06_17/thread_2_seq_6.413.822282955 thread=2 sequence=6 archived log file name=+FRA/TEST1/2014_06_17/thread_1_seq_9.415.822287039 thread=1 sequence=9

archived log file name=+FRA/TEST1/2014_06_17/thread_2_seq_7.414.822286061 thread=2 sequence=7 unable to find archived log archived log thread=2 sequence=8

6. Open the database with resetlogs:

RMAN> alter database open resetlogs; database opened

RMAN> exit Recovery Manager complete.

7. Start the database SQL> startup ORACLE instance started.

Total System Global Area 1068937216 bytes Fixed Size 2220200 bytes Variable Size 616566616 bytes Database Buffers 444596224 bytes

Redo Buffers 5554176 bytes Database mounted. Database opened.

8. Once the DB is started, add the entries and start using the server control utility.

Start the database using SRVCTL:

[oracle@MYHOST1 dbs]$ srvctl status database -d RAC Instance TEST1 is not running on node MYHOST1

[oracle@MYHOST1 dbs]$ srvctl start database -d RAC [oracle@MYHOST1 dbs]$ srvctl status database -d RAC Instance TEST1 is running on node MYHOST1