Datafiles UNKNOWN after dbms_backup_restore

Question

Hi..
I am doing ASM to ASM database cloning on Linux.
I have restored the datafiles using the dbms_backup_restore procedure from the backupset, but the datafiles are named as "UNKNOWN" after the restore.
The datafiles are named as in below :
Type Redund Striped Time Sys Name
DATAFILE UNPROT COARSE SEP 21 10:00:00 Y UNKNOWN.298.794572463
DATAFILE UNPROT COARSE SEP 21 10:00:00 Y UNKNOWN.299.794572455
One important thing to inform you, the datafiles are restoring nicely with the datafiles names on the filesystem, but problem only on ASM.
Could you please help me out ?
Thanks
Arjun.

Answer 1

hi,
pls take a look at this doc
http://blog.ronnyegner-consulting.de/2010/11/03/how-to-restore-an-rman-backup-without-any-existing-control-files/
Restoring will create the datafile in either you default db-creation dest or in $ORACLE_HOME/dbs. The names unfortunately are lost thus all datafiles are name something like “unnamed<number>” (e.g. “unnamed001″ and so on).
After restoring all datafile you need to re-create the control file.
CREATE CONTROLFILE REUSE DATABASE ORA11P RESETLOGS NOARCHIVELOG
MAXLOGFILES 32
MAXLOGMEMBERS 2
MAXDATAFILES 32
MAXINSTANCES 1
MAXLOGHISTORY 449
LOGFILE
GROUP 1 '/path/oracle/dbs/t_log1.f' SIZE 500K,
GROUP 2 '/path/oracle/dbs/t_log2.f' SIZE 500K
# STANDBY LOGFILE
DATAFILE
'/path/oracle/dbs/t_db1.f',
'/path/oracle/dbs/dbu19i.dbf',
'/path/oracle/dbs/tbs_11.f',
'/path/oracle/dbs/smundo.dbf',
'/path/oracle/dbs/demo.dbf'
CHARACTER SET WE8ISO8859P1
regards,
Edited by: dataseven on 24.Eyl.2012 04:54