9.0.1 linux startup problem

I had just completed installing an eval of 9.0.1 on Mandrake 8.2. Everything appeared to be in, no problems in the logs that I could see. I shutdown normally, then went to start up, when, wham! -

ALTER DATABASE OPEN
Fri Apr 19 14:16:11 2002
Thread 1 opened at log sequence 13
  Current log# 1 seq# 13 mem# 0: /var/oradata/log/lab1_redo01a.log   Current log# 1 seq# 13 mem# 1: /usr/oradata/log/lab1_redo1b.log Successful open of redo thread 1.
Fri Apr 19 14:16:11 2002
SMON: enabling cache recovery
Fri Apr 19 14:16:12 2002
Errors in file /home/oracle/admin/lab1/udump/ora_14222.trc: ORA-30012: undo tablespace 'RBS' does not exist or of wrong type Fri Apr 19 14:16:12 2002
****NOTE *************

Error 30012 happened during db open, shutting down database USER: terminating instance due to error 30012 Instance terminated by USER, pid = 14222 ORA-1092 signalled during: ALTER DATABASE OPEN...

Now during the install the undo tablespace took the name of my data tablespace (my own fault for playing with dbca instead of writing my own scripts), but I can't see why the datra dictionary shouldn't know about that.

Anyone know how to fix this?

TIA - Regards,
jh Received on Fri Apr 19 2002 - 14:40:00 CDT