Drop Undo Segments - URGENT HELP

Question

Hi,
I am currently doing a DR activity.
My database is in version 10.2.0.3.0 and the platform is Windows 2003 server.
When I try to startup my database, the database gets started, but gets crashed immediately after few seconds.
The PMON and DBWR background processes are getting crashed.
ORA-00472: PMON process terminated with error
The alert log gives the below information.
Errors in file d:\oracle\admin\aspplmp1\bdump\aspplmp1_smon_5280.trc:
ORA-00604: error occurred at recursive SQL level 1
ORA-00607: Internal error occurred while making a change to a data block
ORA-00600: internal error code, arguments: [4194], [60], [59], [], [], [], [], []
Thu Jun 24 22:22:43 2010
Errors in file d:\oracle\admin\aspplmp1\bdump\aspplmp1_smon_5280.trc:
ORA-00600: internal error code, arguments: [4194], [26], [30], [], [], [], [], []
Doing block recovery for file 2 block 2026
Block recovery from logseq 8749, block 141 to scn 10598515167830
Thu Jun 24 22:22:45 2010
Recovery of Online Redo Log: Thread 1 Group 3 Seq 8749 Reading mem 0
  Mem# 0: D:\ORACLE\ORADATA\ASPPLMP1\REDO03A.RDO
  Mem# 1: D:\ORACLE\ORADATA\ASPPLMP1\REDO03B.RDO
Block recovery stopped at EOT rba 8749.142.16
Block recovery completed at rba 8749.142.16, scn 2467.2830848597
Doing block recovery for file 2 block 41
Block recovery from logseq 8749, block 141 to scn 10598515167828
Thu Jun 24 22:22:45 2010
Recovery of Online Redo Log: Thread 1 Group 3 Seq 8749 Reading mem 0
  Mem# 0: D:\ORACLE\ORADATA\ASPPLMP1\REDO03A.RDO
  Mem# 1: D:\ORACLE\ORADATA\ASPPLMP1\REDO03B.RDO
Block recovery completed at rba 8749.142.16, scn 2467.2830848597
Thu Jun 24 22:22:45 2010
Errors in file d:\oracle\admin\aspplmp1\bdump\aspplmp1_smon_5280.trc:
ORA-01595: error freeing extent (2) of rollback segment (3))
ORA-00607: Internal error occurred while making a change to a data block
ORA-00600: internal error code, arguments: [4194], [26], [30], [], [], [], [], []
Thu Jun 24 22:14:09 2010
Errors in file d:\oracle\admin\aspplmp1\bdump\aspplmp1_q000_1868.trc:
ORA-00600: internal error code, arguments: [4193], [10635], [10638], [], [], [], [], []
ORA-00472: PMON  process terminated with errorWhen I checked metalink, I found a note: 8240762.8, which says that its a bug.
But the workaround they have given is to DROP UNDO SEGMENTS. How do I do that? Could someone please help me out?
OR is there a different way to solve this issue?
Thanks!

Answer 1

Hi.There you see ORA-00600: internal error code internal error,this is serious error you need open SR and report Oracle Support.But you can try following tasks to resolving this problem.
1.Backup your database.
2.Create new undo tablespace(for example create undo tablespace <new_undo_ts> ....);
3.If you use spfile then create pfile from spfile as create pfile='location' from spfile='spfilelocation'
4.Change in getting pfile undo_management=manual,undo_tablespace=<new_undo_ts>
5.startup database using this pfile as startup pfile='pfilelocation'
6.drop tablespace <old_undo_tsname>;
7.Change undo_management=auto in pfile and create spfile from pfile again.