How to solve Oracle Database Error 21561 (ora-21561)

I am facing error :-ORA-21561: OID generation failed , 
while running any script on the server(aix , n orcale10g) 
whereas no issue is coming in accessing database.

I am facing the same problem. Instance crashes at random

Did you resolve this issue? I'm facing this issue too. Thanks

yes, it was the client problem server was fine

There is new type of issue we are facing here.
This first time  when i connect from my application server i am getting this error.
BUt the second when i give directly the user name and password i am able to connnect to the server.

Think there is a problem in connection through the listener.

jsh Globus /shared/opt/globus/package4/bnk/bnk.run -->echo $ORACLE_SID
fbnkglb
jsh Globus /shared/opt/globus/package4/bnk/bnk.run -->echo $ORACLE_HOME
/shared/db/app/oracle/product/10.2.0
jsh Globus /shared/opt/globus/package4/bnk/bnk.run -->sqlplus xmluser/xmluser@fbnkglb

SQL*Plus: Release 10.2.0.4.0 - Production on Mon Jan 11 17:52:15 2010

Copyright (c) 1982, 2007, Oracle.  All Rights Reserved.

ERROR:
ORA-21561: OID generation failed


Enter user-name: xmluser
Enter password:

Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options

SQL>

Only the 2nd time I give the user name and password I am able to connect