Restoring and Recovering from RMAN cold backup

Question

DB Version: 11gR2
os : Solaris
Before dropping a DB we had taken an RMAN backup of the DB using
RMAN> backup database;We hadn't set a FORMAT (like db_%d_S_%s_P_%p_T_%t) for this DB , so the backups went to ORACLE_HOME/dbs directory. The 2 backup files are
/u02/app/oracle/11.2/db/dbs/01mo9fms_1_1
/u02/app/oracle/11.2/db/dbs/02mo9fnc_1_1  -- spfile and control fileNow we need to recreate this DB on a new server.
In the new server, we've placed the backup files in /u04/backup/rmanbkp .
Since We hadn't set a FORMAT parameter for the original DB which we have dropped what format i will give during restore?
Will RMAN automatically recognize the FORMAT of the backup piece and restore ?
RMAN> run
allocate channel c1 device type disk format 'i_dont_know_the_format';
allocate channel c2 device type disk format 'i_dont_know_the_format';
restore controlfile;
restore database;
}This the SHOW ALL output from the DB we have dropped .
RMAN> show all;
RMAN configuration parameters for database with db_unique_name BRCFTST are:
CONFIGURE RETENTION POLICY TO REDUNDANCY 1; # default
CONFIGURE BACKUP OPTIMIZATION OFF; # default
CONFIGURE DEFAULT DEVICE TYPE TO DISK; # default
CONFIGURE CONTROLFILE AUTOBACKUP OFF; # default
CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE DISK TO '%F'; # default
CONFIGURE DEVICE TYPE DISK PARALLELISM 1 BACKUP TYPE TO BACKUPSET; # default
CONFIGURE DATAFILE BACKUP COPIES FOR DEVICE TYPE DISK TO 1; # default
CONFIGURE ARCHIVELOG BACKUP COPIES FOR DEVICE TYPE DISK TO 1; # default
CONFIGURE MAXSETSIZE TO UNLIMITED; # default
CONFIGURE ENCRYPTION FOR DATABASE OFF; # default
CONFIGURE ENCRYPTION ALGORITHM 'AES128'; # default
CONFIGURE COMPRESSION ALGORITHM 'BASIC' AS OF RELEASE 'DEFAULT' OPTIMIZE FOR LOAD TRUE ; # default
CONFIGURE ARCHIVELOG DELETION POLICY TO NONE; # default
CONFIGURE SNAPSHOT CONTROLFILE NAME TO '/u02/app/oracle/11.2/db/snapcf_brcftst.f'; # defaultAs you can see we hadn't set the format explicitly , ie. the line
CONFIGURE CHANNEL DEVICE TYPE DISK FORMAT is missing

Answer 1

Hi,
Before dropping a DB we had taken an RMAN backup.I hope you were in mount mode.
Will RMAN automatically recognize the FORMAT of the backup piece and restore ?No it won't.
First you have to restore a controlfile in nomount mode with:
restore controlfile from '/u04/backup/rmanbkp /02mo9fnc_1_1';
and do alter database mount.
Than you have to run "catalog start with '/u04/backup/rmanbkp'; " so the instance now knows where to find the pieces.
Now you can run a restore database command.
Than open the database with resetlogs.
Regards,
Tycho