Restore primary database using physical standby

hi,
i am taking rman backup on production database,we have physical standby.coming month i have to take backup from standby instead of prod db.pls advise me, is it possible to restore and recover production database using standby database backup.if production crashed.pls advise me .i am new to dba.if possible pls provide proper steps.
Regards
Faruk

Faruk.m wrote:
hi,
i have to take backup on standby instead of production.failover i can do.but i need to know the recovery procedures from standby.and thank u for reply.i want, is it possible to restore my production controlfile with controlfile backup from standby.
i tested with my local database ,that below:
1.backup with controlfile from standby (rman>backup current controlfile)
2.manual deleted my test db controlfile,tried to restore from backup taken from standby(rman>restore controlfile from '*****************';)
3.rman>restore database
3.but it shows error (datafile already exists) ,controlfile tried to create datafiles on standby location.
my conclusion:above my cmds used to create datafiles on standby becoz i restored with standby controlfile.
my question:what is wrong with my steps? and how to restore my (prod) controlfile from standby.and bring backup my prod db.
regards
farukHi Faruk,
Sorry my late.
I can share with you my test.
It is my standby database, I connecting with RMAN
SQL> select database_role, db_unique_name, name from v$database;
DATABASE_ROLE      DB_UNIQUE_NAME           NAME
PHYSICAL STANDBY       stldb                    ADMDB
[oracle@oel62-x64 oradata]$ rman target /
Recovery Manager: Release 11.2.0.3.0 - Production on Tue Apr 23 12:23:00 2013
Copyright (c) 1982, 2011, Oracle and/or its affiliates. All rights reserved.
connected to target database: ADMDB (DBID=4063877183, not open)
RMAN> backup current controlfile;
Starting backup at 23-APR-13
Starting implicit crosscheck backup at 23-APR-13
using target database control file instead of recovery catalog
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=29 device type=DISK
Finished implicit crosscheck backup at 23-APR-13
Starting implicit crosscheck copy at 23-APR-13
using channel ORA_DISK_1
Finished implicit crosscheck copy at 23-APR-13
searching for all files in the recovery area
cataloging files...
no files cataloged
using channel ORA_DISK_1
channel ORA_DISK_1: starting full datafile backup set
channel ORA_DISK_1: specifying datafile(s) in backup set
including current control file in backup set
channel ORA_DISK_1: starting piece 1 at 23-APR-13
channel ORA_DISK_1: finished piece 1 at 23-APR-13
piece handle=/u01/app/oracle/fast_recovery_area/stldb/STLDB/backupset/2013_04_23/o1_mf_ncnnf_TAG20130423T122310_8qdfq19x_.bkp tag=TAG20130423T122310 comment=NONE
channel ORA_DISK_1: backup set complete, elapsed time: 00:00:01
Finished backup at 23-APR-13
RMAN> exit
Recovery Manager complete.
[oracle@oel62-x64 oradata]$ sqlplus / as sysdba
SQL*Plus: Release 11.2.0.3.0 Production on Tue Apr 23 12:23:26 2013
Copyright (c) 1982, 2011, Oracle. All rights reserved.
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> shut immediate;
ORA-01109: database not open
Database dismounted.
ORACLE instance shut down.
SQL> startup nomount;
ORACLE instance started.
Total System Global Area 551165952 bytes
Fixed Size              2230232 bytes
Variable Size            167774248 bytes
Database Buffers       377487360 bytes
Redo Buffers              3674112 bytes
SQL>
SQL>
SQL> exit
Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
[oracle@oel62-x64 oradata]$ rman target /
Recovery Manager: Release 11.2.0.3.0 - Production on Tue Apr 23 12:34:58 2013
Copyright (c) 1982, 2011, Oracle and/or its affiliates. All rights reserved.
connected to target database: ADMDB (not mounted)
RMAN> restore controlfile from '/u01/app/oracle/fast_recovery_area/stldb/STLDB/backupset/2013_04_23/o1_mf_ncnnf_TAG20130423T122310_8qdfq19x_.bkp';
Starting restore at 23-APR-13
using target database control file instead of recovery catalog
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=19 device type=DISK
channel ORA_DISK_1: restoring control file
channel ORA_DISK_1: restore complete, elapsed time: 00:00:01
output file name=/u01/app/oracle/oradata/stldb/control01.ctl
Finished restore at 23-APR-13
RMAN> alter database mount;
database mounted
released channel: ORA_DISK_1
RMAN> exit
Recovery Manager complete.
[oracle@oel62-x64 oradata]$ sqlplus / as sysdba
SQL*Plus: Release 11.2.0.3.0 Production on Tue Apr 23 12:35:31 2013
Copyright (c) 1982, 2011, Oracle. All rights reserved.
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> select database_role, db_unique_name, name from v$database;
DATABASE_ROLE      DB_UNIQUE_NAME           NAME
PRIMARY       stldb                    ADMDB
As show here, you can backup standby control file, and restore as primary .
Regars
Mahir M. Quluzade
http://www.mahir-quluzade.com

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