RE: Rollback Segments

From: Baker, Barbara <bbaker_at_denvernewspaperagency.com>
Date: Mon, 18 Feb 2002 09:08:31 -0800
Message-ID: <F001.0041254C.20020218090831@fatcity.com>

Witold:
This will show which rollback segment is being used by a current transation. (Also shows current sql as well as a time stamp. You can get rid of that stuff if you don't need it.)

There's no way I know of to force a user to a particular rollback segment. Barb

select TO_CHAR(SYSDATE,'DD-MON-YYYY:HH24:MI:SS'),

       osuser o,       username u,
       segment_name s, substr(sa.sql_text,1,500) txt
from v$session s,
     v$transaction t,
     dba_rollback_segs r,
     v$sqlarea sa
where s.taddr=t.addr

and t.xidusn=r.segment_id(+)
and s.sql_address=sa.address(+)
/

> ----------
> From: Witold Iwaniec[SMTP:wiwaniec_at_novalistech.com]
> Reply To: ORACLE-L_at_fatcity.com
> Sent: Monday, February 18, 2002 8:33 AM
> To: Multiple recipients of list ORACLE-L
> Subject: Rollback Segments
>
> Hello DBAs
>
> Is there a command that tells me which rollback segment is being
> used by current transaction?
> Also, can you force a session to use particular rollback segment? I
> have used in the past the command:
>
> set transaction use rollback segment rbs_01
>
> but the named rollback segment seemed to be used until the end of
> tranasction. After a commit or rollback a different rollback segment
> could have been used by Oracle. I wonder if there is a way to make
> sure that once a user logs in, a particular rollback segment is used.
>
> Thanks
>
> Witold
>
> ==================================
> Witold Iwaniec
> Sr Software Developer
> NovaLIS Technologies
> wiwaniec_at_novalistech.com
> http://www.novalistech.com
>
> --
> Please see the official ORACLE-L FAQ: http://www.orafaq.com
> --
> Author: Witold Iwaniec
> INET: wiwaniec_at_novalistech.com
>
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-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.com
-- 
Author: Baker, Barbara
  INET: bbaker_at_denvernewspaperagency.com

Fat City Network Services    -- (858) 538-5051  FAX: (858) 538-5051
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Received on Mon Feb 18 2002 - 11:08:31 CST