Getting ora-01113 error while opening Database after recovery

Question

HI all,
we have a test database. I lost my entire database including DBFs, controlfiles, Archived logs, redo log files.
But I have a hot backup copy of the lost database.
I tried to recover database using backup copy
I restored my control files and all dbfs and then when i tried to recover database I got the following message
RMAN-00571: ==============================
RMAN-00569: =ERROR MESSAGE STACK FOLLOWS =
RMAN-00571: ===============================
RMAN-03002: failure of recover command at 04/01/2005 14:14:43
RMAN-06054: media recovery requesting unknown log: thread 1 scn 32230460
still i tried to open database resetlogs but i got following eror
RMAN> alter database open resetlogs:
ORA-01113: file 5 needs media recovery
ORA-01110: data file 5: C:\DB11\ORADATA\DB11\system01.dbf
I dont have any redo logs and archivelogs. Can anyone help me how to open the database
thanks and regards
VENKAT

Answer 1

no there is no other way allowresetlogs_corruption is one of the last resort unless oracle dont recommend,usually you got this error when restored datafile is far behind then others datafile CKPT SCN+COntrolfile CKPT SCN header.
SQL> select controlfile_change#,checkpoint_change#
  2    from v$database
  3  /
CONTROLFILE_CHANGE# CHECKPOINT_CHANGE#
             675632             675775
SQL> select substr(name,1,51) fname,checkpoint_change#
  2    from v$datafile_header
  3  /
FNAME                                               CHECKPOINT_CHANGE#
F:\ORACLE\PRODUCT\10.1.0\ORADATA\PROD\SYSTEM01.DBF              675775
F:\ORACLE\PRODUCT\10.1.0\ORADATA\PROD\UNDOTBS01.DBF             675775
F:\ORACLE\PRODUCT\10.1.0\ORADATA\PROD\SYSAUX01.DBF              675775
F:\ORACLE\PRODUCT\10.1.0\ORADATA\PROD\USERS01.DBF               675775
F:\ORACLE\PRODUCT\10.1.0\ORADATA\PROD\USERS02.DBF[b]               675418user02.dbf CKPT SCN header 675418 is earlier/oldest CKPT SCN header to others datafile as well to controilfile CKPT SCN header.
You will have to apply enough redo to that datafile either from archivelog or from online redo log file,if you cant then no way you can open the database except using allowresetlogs_corruption with the oracle recommendation.
Think why archivelog backup ,database backup and online redo log file, controlfile redundency is recommended.
Khurram