Can't drop user.


I try to drop a user, and get the following error:

drop user test1
ERROR at line 1:
ORA-01001: invalid cursor
ORA-00600: internal error code, arguments: [qmxiUnpPacked2], [121], [], [], [],
[], [], []

I'm running Oracle 9i on Windows 2000 Server.

Thanks for any help
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Have you recently applied any patches?  If so, try running catpatch.sql.  

Also, make sure all your oracle objects are valid.  If not, recompile them until they all are valid.  Then try again.

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