Below steps are useful if RMAN is configure for Oracle Database backup and you want to do Backup restore using RMAN configuration for system refresh activity.
Consideration
Database : Oracle 10g
OS : Linux
1.Ensure db is shutdown in target database
Sqlplus “/ as sysdba”
Shutdown immediate
exit
2.Create a symbolic link on target server
cd /oracle
ln –s /oracle/<Target SID> <Source SID>
3. Ftp following directory on Source server to target server
/oracle//sapbackup
Note you will always need the .fnr (Level 0) backup
Also copy required .inr file, this should be the closest to the point in time you are trying to recover to, but not later than.
Final file copy is back.log
Once copied to target server, ensure permissions are correct
4.Ftp the following directory on Source server to target server
/oracle//102_64/dbs
Copy the following files to from source database
/oracle//102_64/dbs
init<Source SID>.dba
init<Source SID>.ora
init<Source SID>.sap
init<Source SID>.sap
init<Source SID>.sap_rman_incr
spfile<Source SID>.ora
init<Source SID>.bki
Again check permissions once copied
5. Set environment variables on target server
Note – Ensure you are logged in as ora
SETENV DB_SID
SETENV SAPDATA_HOME /ORACLE/
SETENV ORACLE_HOME /oracle//102_64
If your session times out, or you log off these environment variables will need to be set again
6.Restore the DB control files saved with the Level 1 backup (This is the .inr file)
brrestore -b <.inr file> -m 0 -d rman_util
Once complete you should then have the Source SID control files in the following locations
/oracle//sapdata1/cntrl
/oracle//origlogA/cntrl
/oracle//origlogB/cntrl
7.Mount the Database
Sqlplus “/ as sysdba”
Startup mount
Exit
8.Start the restore of the data files
brrestore -b <.fnr filename> -m all -d rman_util
Check log file for successful completion
9.Apply incremental backup once step 8 complete
brrestore -b <.inr filename> -m incr -d rman_util
Check log file for successful completion
10.Shutdown DB
Sqlplus “/ as sysdba”
Shutdown immediate
exit
11. Log off as ora to reset environment variables to original values
12.On target server remove the logical link created earlier
Cd /oracle
Rm <Source SID>
13 .
Change the SID of the database by running the control.sql file:
Run the control.sql script at the sqlplus command prompt:
- get control file trace on source system using command "alter database backup control file to trace"
- rename trace file to control.sql and change sorce id to traget database id in control file.
- transfer updated control file to target system
- logon to target system and type:-
su – ora
sqlplus “/as sysdba”
sqlplus> @control.sql
sqlplus> exit;
14.After this just follow standard System backup recovery steps to complete point in time recovery using log files.
15.You can check the database has returned to its original SID and using the correct control files by issuing the following commands
Sqlplus “/ as sysdba”
"Show parameter control_file;"
The output should reference the target SID
"select NAME from v$database;"
This should show the target SID
16.Continue as per System Refresh activity. and follow remaining Post processing steps