Recover Database Failed..

Question

Hi,
I am trying to recover my Oracle 9i v9.2.0.4 database running on Solaris 9 (sparc). Database is in archived log mode and RMAN is also used to perform incremental and full backups.
My database died with an internal error and so far I can restore it from within RMAN with no problem. When I execute "Recover database", I see the following:
RMAN> recover database;
Starting recover at 12-APR-04
using channel ORA_DISK_1
using channel ORA_DISK_2
channel ORA_DISK_1: starting incremental datafile backupset restore
channel ORA_DISK_1: specifying datafile(s) to restore from backup set
destination for restore of datafile 00003: /ora02/app/oracle/oradata/sunesdb/cwmlite01.dbf
destination for restore of datafile 00005: /ora02/app/oracle/oradata/sunesdb/example01.dbf
destination for restore of datafile 00006: /ora02/app/oracle/oradata/sunesdb/indx01.dbf
destination for restore of datafile 00010: /ora02/app/oracle/oradata/sunesdb/xdb01.dbf
channel ORA_DISK_2: starting incremental datafile backupset restore
channel ORA_DISK_2: specifying datafile(s) to restore from backup set destination for restore of datafile 00001: /ora02/app/oracle/oradata/sunesdb/system01.dbf
destination for restore of datafile 00008: /ora02/app/oracle/oradata/sunesdb/tools01.dbf
channel ORA_DISK_1: restored backup piece 1
piece handle=/ora_backup/ora_df522977420_s309_s1 tag=TAG20040408T233019 params=NULL
channel ORA_DISK_1: restore complete
channel ORA_DISK_2: restored backup piece 1
piece handle=/ora_backup/ora_df522977515_s311_s1 tag=TAG20040408T233019 params=NULL
channel ORA_DISK_2: restore complete
channel ORA_DISK_1: starting incremental datafile backupset restore
channel ORA_DISK_1: specifying datafile(s) to restore from backup set
destination for restore of datafile 00002: /ora02/app/oracle/oradata/sunesdb/undotbs01.dbf
destination for restore of datafile 00004: /ora02/app/oracle/oradata/sunesdb/drsys01.dbf
destination for restore of datafile 00007: /ora02/app/oracle/oradata/sunesdb/odm01.dbf
destination for restore of datafile 00009: /ora02/app/oracle/oradata/sunesdb/users01.dbf
channel ORA_DISK_1: restored backup piece 1
piece handle=/ora_backup/ora_df522977420_s310_s1 tag=TAG20040408T233019 params=NULL
channel ORA_DISK_1: restore complete
starting media recovery
media recovery failed
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of recover command at 04/12/2004 17:10:44
ORA-00283: recovery session canceled due to errors
RMAN-11003: failure during parse/execution of SQL statement: alter database recover if needed start
ORA-00283: recovery session canceled due to errors
ORA-00600: internal error code, arguments: [3020], [8388729], [1], [154], [167160], [16
ORA-10567: Redo is inconsistent with data block (file# 2, block# 121)
ORA-10564: tablespace UNDOTBS1
ORA-01110: data file 2: '/ora02/app/oracle/oradata/sunesdb/undotbs01.dbf'
ORA-10560: block type 'KTU SMU HEADER BLOCK'
RMAN>
I also tried to restore and recover to 08-Apr-04, the day before it crashed. This can be done successfully but I still cannot open the database.
The error says I need to used RESETLOGS or NORESETLOGS. I followed but the database still refused to open.
What should I do to get the database back online? I am not DBA trained and hence kindly list me the steps to follow.
Is it possible to start without the undotsb01.dbf and then rebuild it? What would I lose by doing this? Any alternatives?
Thank you very much!

Answer 1

Bad news.. I forgot to turn off my cron jobs last night and it seems that my backups were overwritten. I cannot restore back to 08-APR-04 as it reported RMAN-06023: no backup or copy of datafile found to restore.
Any way to resolve the undotsb01.dbf problem so that I can startup my database again?