RE: ** dictionary table access slow

From: Reardon, Bruce (CALBBAY) <Bruce.Reardon_at_comalco.riotinto.com.au>
Date: Mon, 16 Feb 2004 12:25:24 +1100
Message-ID: <DF33C5D0C428FE4DBC8410FC2793EE7F01E76DBB@calbbsv025.cal.riotinto.org>

What is the optimiser mode set to?
If it is set to first_rows this could be the cause - try altering the mode at session level or as others have said, rule hint / check for analysed sys objects

HTH,
Bruce Reardon
mailto:bruce.reardon_at_comalco.riotinto.com.au =20
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-----Original Message-----
From: oracle-l-bounce_at_freelists.org
[mailto:oracle-l-bounce_at_freelists.org]On Behalf Of Hemant K Chitale Sent: Monday, 16 February 2004 1:06 AM
To: oracle-l_at_freelists.org
Subject: Re: ** dictionary table access slow

I prefer :
select y.sql_text
from v$session x, v$sqltext y, v$process q where x.sql_address =3D y.address

and x.sql_hash_value =3D y.hash_value
and q.addr =3D x.paddr
and q.spid =3D &unix_pid   --> when querying by Server ProcessID

order by x.sid, y.piece
/

At 12:43 PM 11-02-04 -0800, you wrote:
>Hi,
> Queries to v$ tables are taking too long. We have Sun UNIX with =
8174.=20
> For example the following queries take around 1 minute. How can this =
be=20
> tuned. Is it a symptom of some other problem? :
>
>select a.sid, a.serial#, c.spid, a.username, a.osuser, =
a.status,a.process,=20
>b.sql_text
>from v$session a , v$sqlarea b, v$process c
>where a.sql_address =3D b.address
>and c.addr =3D a.paddr
>order by a.username, a.osuser
>
>Thanks. Help is appreciated.

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Received on Sun Feb 15 2004 - 19:25:24 CST