Backup - RMAN..

    * Create a catalog
    * Register a database
    * Un-register a database
    * Reset the catalog after a restlogs on the target
    * Resync the catalog with the target controlfile
    * Delete a backup
    * Backup a database
    * Restore/recover a database
    * Show the controlfile backup record
    * Misc commands

Create a catalog

create a tablespace
create a user
grant connect, resource, recovery_catalog_owner to user

rman catalog user/pass@db
create catalog tablespace "<tablespace_name>";

Note. <tablespace_name> is case sensitive (i.e. it must be uppercase)

Note. If you get the error 'rman: can't open catalog', make sure that oracle's rman is being run (which rman). X11 also has a command called rman. Rename it if necessary.

Register a database

Note. ensure the target db has a password file

rman catalog user/pass@rmandb target user/pass@db

register database;

Un-register a database

sqlplus user/pass@rmandb
select * from rc_database;
select db_key, db_id from db;

execute dbms_rcvcat.unregisterdatabase(<db_key>, <db_id>);

Reset the catalog after a restlogs on the target

reset database;

Resync the catalog with the target controlfile

resync catalog;

Delete a backup

allocate channel... delete backuppiece <number>; 

release channel; 

Backup a database

backup database plus archivelog format '/u01/ora_backup/rman/%d_%u_%s';

run {
allocate channel t1 type disk;
backup current controlfile format '/u01/ora_backup/rman/%d_%u_%s';
backup database format '/u01/ora_backup/rman/%d_%u_%s';
backup archivelog all delete input format '/u01/ora_backup/rman/arch_%d_%u_%s';
release channel t1;
}

run {
allocate channel t1 type disk;
backup archivelog all delete input format '/u01/ora_backup/rman/arch_%d_%u_%s';
release channel t1;
} 

Cold backup (archivelog or noarchivelog mode)
run {
allocate channel t1 type disk;
shutdown immediate;
startup mount;
backup database include current controlfile format '/u01/ora_backup/rman/%d_%u_%s';
alter database open;
}

run {
     allocate channel  t1 type disk;
     backup archivelog all delete input;
}

Restore/recover a database

Full restore and recovery
startup nomount; 

run { allocate channel t1 type disk; 

allocate channel t2 type disk; 

allocate channel t3 type disk; 

allocate channel t4 type disk; 

restore controlfile; 

restore archivelog all; 

alter database mount; 

restore database; 

recover database; 

} 

sql 'alter database open resetlogs';

Restore and roll forward to a point in time

startup nomount; 

run { set until time ="to_date('30/08/2006 12:00','dd/mm/yyyy hh24:mi')"; 

allocate channel t1 type disk; 

allocate channel t2 type disk; 

allocate channel t3 type disk; 

allocate channel t4 type disk; 

restore controlfile; 

restore archivelog all; 

alter database mount; 

restore database; 

recover database; 

} 

sql 'alter database open resetlogs';

If the archive logs are already in place:

startup mount; 

run { set until time ="to_date('08/02/2007 14:00','dd/mm/yyyy hh24:mi')"; 

allocate channel t1 type disk; 

allocate channel t2 type disk; 

allocate channel t3 type disk; 

allocate channel t4 type disk; 

restore database; 

recover database; 

} 

sql 'alter database open resetlogs';

startup mount; 

run { allocate channel t1 type disk; 

recover database; 

}

Show the control file backup record

set pages 999 lines 100 

col name format a60 

break on set_stamp skip 1 

select set_stamp 

, to_char(ba.completion_time, 'HH24:MI DD/MM/YY') finish_time 

, df.name 

from v$datafile df 

, v$backup_datafile ba 

where df.file# = ba.file# 

and ba.file# != 0 

order by set_stamp, ba.file# 

/

Misc commands

list backupset; 

list backup of database; 

list backup of archivelog all; 

report obsolete; 

report obsolete redundancy = 2; 

delete obsolete; - remove unneeded backups 

restore database validate; - check the backup 

report unrecoverable; 

report schema; - show current db files 

crosscheck backup; - make sure the backups in the catalog still physically exist 

delete expired backup; - delete epired backups found by crosscheck 

rman target sys/*****@scr10 catalog rman/rman@dbarep 

LIST BACKUPSET OF DATABASE; 

ALLOCATE CHANNEL FOR MAINTENANCE DEVICE TYPE DISK; 

DELETE OBSOLETE REDUNDANCY = 4 device type disk; 

delete obsolete REDUNDANCY = 2 device type disk;

Delete archive log older than...

DELETE NOPROMPT ARCHIVELOG UNTIL TIME "SYSDATE-5" 

Crosscheck the available archivelogs (fixes RMAN-06059)
change archivelog all crosscheck;

Sukhwinder Singh

Apps DBA