Re: Overparsing issue

How do you know that this is parsing - have you traced the session(s) ? If it is parsing you should have the problem with shared pool, although 95% hit ratio is fine. And btw, indexes has nothing to do with parsing.

If it is not parsing but fetch time - have you analyzed the query that takes that long ? Is it using the indexes ? Which optimizer are you using. If you have been using rule - have you may be analyzed some of the tables that are queried ? If you have been using cost - have statistics changed considerably ? What is you db block buffer hit ratio ?

Djordje

• Original Message ----- From: Majid Kazemi <Mkazemi_at_teranet.on.ca> To: Multiple recipients of list ORACLE-L <ORACLE-L_at_fatcity.com> Sent: Sunday, December 03, 2000 5:20 PM Subject: Overparsing issue

> Hi Oracle Guru:
>
> I have an oracle version 7.3.4 database on NT 4.0. Since last week the CPU
> time for parsing has been dramatically increased. A query which only took
> 4 microseconds, now it takes 7-8 seconds before completed. The share
pool
> size is relatively okay. It is 20MB. There is waiting . The hit ratio is
> almost 95%. I dropped and recreated indices with the hope that something
> would change. It stills the same. From my understanding nothing major has
> been changed from the OS side. Excepts two dll upgraded to the newer
> version.
> I need your help. Please let me know if you have had such an experience or
> any information which help me to understand and resolve this problem. Your
> help on this matter highly appreciated. .
>
> Thanks;
> Majid Kazemi
> --
> Please see the official ORACLE-L FAQ: http://www.orafaq.com
> --
> Author: Majid Kazemi
> INET: Mkazemi_at_teranet.on.ca
>
> Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051
> San Diego, California -- Public Internet access / Mailing Lists
> --------------------------------------------------------------------
> To REMOVE yourself from this mailing list, send an E-Mail message
> to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in
> the message BODY, include a line containing: UNSUB ORACLE-L
> (or the name of mailing list you want to be removed from). You may
> also send the HELP command for other information (like subscribing).
Received on Sun Dec 03 2000 - 20:38:01 CST