RE: ** dictionary table access slow

From: John Kanagaraj <john.kanagaraj_at_hds.com>
Date: Wed, 11 Feb 2004 13:40:43 -0800
Message-ID: <35CFD500D7BDCE43B9030BBA5979DC181D92D5@ussccem13.hds.com>

Joshi,

Time for Queries against these virtual tables is based on (a) the 'sessions' parameter (which in turn depends on 'processes') - the larger this number, the longer it will take (b) V$SQLAREA performs a Group by on V$SQL - can you not replace v$sqlarea by v$sql? A large Shared pool, of course will have a contributory effect

John Kanagaraj <><
DB Soft Inc
Phone: 408-970-7002 (W)

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The opinions and facts contained in this message are entirely mine and do not reflect those of my employer or customers **

>-----Original Message-----
>From: oracle-l-bounce_at_freelists.org
>[mailto:oracle-l-bounce_at_freelists.org] On Behalf Of A Joshi
>Sent: Wednesday, February 11, 2004 12:44 PM
>To: oracle-l_at_freelists.org; oracledba_at_lazydba.com
>Subject: ** dictionary table access slow
>
>
>Hi,
> Queries to v$ tables are taking too long. We have Sun UNIX
>with 8174. For example the following queries take around 1
>minute. How can this be tuned. Is it a symptom of some other
>problem? :
>
>select a.sid, a.serial#, c.spid, a.username, a.osuser,
>a.status,a.process, b.sql_text
>from v$session a , v$sqlarea b, v$process c
>where a.sql_address = b.address
>and c.addr = a.paddr
>order by a.username, a.osuser
>
>Thanks. Help is appreciated.
>
>
>
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Received on Wed Feb 11 2004 - 15:40:43 CST