Your question is not very clear. Sorry. 

Can you please post results of following commands? 

Thanks.

- Kirti 

SQL> show parameter undo 

SQL> select segment_name, tablespace_name from dba_rollback_segs; 

SQL> select a.usn, a.name, b.status
  2  from v$rollname a,
  3       v$rollstat b
  4  where a.usn = b.usn; 



--- [EMAIL PROTECTED] wrote:

>   I use manual managed undo tablespace but there are some system named rollback 
> segments on that
> tablespace  ( I did not created them  )  and they can not be dropped.
>   What are they , how can I drop them.
> -- 
> Please see the official ORACLE-L FAQ: http://www.orafaq.net
> -- 
> Author: <[EMAIL PROTECTED]
>   INET: [EMAIL PROTECTED]
> 
> 

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Please see the official ORACLE-L FAQ: http://www.orafaq.net
-- 
Author: Kirtikumar Deshpande
  INET: [EMAIL PROTECTED]

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