Oracle-L: Re: ROLLBACK SEGMENT?

From: Mohammad Rafiq <rafiq9857_at_hotmail.com>
Date: Thu, 28 Mar 2002 12:23:23 -0800
Message-ID: <F001.0043629F.20020328122323@fatcity.com>

Alternately run following script and set your optimal nearest to HWMSIZE as a start. It requires a lot of monitoring to set optimal according to your application requirement.

select ud.name,

       sg.extents ext,
       round(sg.blocks * ts.blocksize / 1048576, 2) MB,
       round(s.optsize / 1048576, 1) optsize,
       round(s.aveactive / 1048576, 1) AVEACT,
       round(s.hwmsize / 1048576, 1) HWMSIZE,
       s.shrinks,
       s.wraps,
       s.waits,
       nvl(s.status, 'OFFLINE') status
from v$rollstat s,
     sys.undo$ ud,
     sys.seg$ sg,
     sys.ts$ ts
where ud.us# = s.usn (+)
  and ud.file# = sg.file#

and ud.block# = sg.block#
and sg.ts# = ts.ts#
/

Regards
Rafiq

Reply-To: ORACLE-L_at_fatcity.com
To: Multiple recipients of list ORACLE-L <ORACLE-L_at_fatcity.com> Date: Thu, 28 Mar 2002 11:08:20 -0800

Don't specify "OPTIMAL" parameter for rollback segment.

Igor Neyman, OCP DBA
ineyman_at_perceptron.com

Original Message ----- To: "Multiple recipients of list ORACLE-L" <ORACLE-L_at_fatcity.com> Sent: Thursday, March 28, 2002 1:38 PM

> Hi
> I am looking lot of shrinkage in rollback segment.please suggest.
> Thx
> -Seema
>
>
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Author: Igor Neyman
   INET: ineyman_at_perceptron.com

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MOHAMMAD RAFIQ


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-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.com
-- 
Author: Mohammad Rafiq
  INET: rafiq9857_at_hotmail.com

Fat City Network Services    -- (858) 538-5051  FAX: (858) 538-5051
San Diego, California        -- Public Internet access / Mailing Lists
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Received on Thu Mar 28 2002 - 14:23:23 CST