RE: ANALYZE question

Yechiel

        Consider ANALYZE TABLE ESTIMATE STATISTICS. If you consider sampling theory, with larger tables you shouldn't need to inspect each row. You can vary the number of rows that are sampled. We had a good discussion on this topic on this list awhile back. Dennis Williams
DBA
Lifetouch, Inc.
dwilliams_at_lifetouch.com

-----Original Message-----
Sent: Wednesday, July 24, 2002 9:59 AM
To: Multiple recipients of list ORACLE-L

On the subject on analyzed:
We are doing analyze compute statistics and it takes about an hour. Do you know of ways to speed it up?

Yechiel Adar
Mehish
----- Original Message -----
To: Multiple recipients of list ORACLE-L <ORACLE-L_at_fatcity.com> Sent: Wednesday, July 24, 2002 3:54 PM

> On Wed, Jul 24, 2002 at 04:48:41AM -0800, Boivin, Patrice J wrote:
> > A question:
> >
> > If analyzing SYS objects is a bad idea, why is it included by default in
the
> > analyzing commands (dbms_stats, analyze, dbms_utility.analyze_database)?
>
>
> bug, Doc ID: 203003.996, fixed in 9i...I hate it when that happens.
>
>
>
> >
> > Please correct me if my assumption is wrong, we had strange behaviour
here
> > when SYS objects were analyzed on a development db.
> >
> > Regards,
> > Patrice Boivin
> > Systems Analyst (Oracle Certified DBA)
> >
> > Systems Admin & Operations | Admin. et Exploit. des systèmes
> > Technology Services | Services technologiques
> > Informatics Branch | Direction de l'informatique
> > Maritimes Region, DFO | Région des Maritimes, MPO
> >
> > E-Mail: boivinp_at_mar.dfo-mpo.gc.ca
> >
> >
> > -----Original Message-----
> > Sent: Wednesday, July 24, 2002 9:09 AM
> > To: Multiple recipients of list ORACLE-L
> > Subject: RE: ANALYZE question
> >
> > DBMS_STATS can be used to analyze tables.
> >
> > Dave
> >
> > -----Original Message-----
> > Sent: Wednesday, July 24, 2002 4:03 AM
> > To: Multiple recipients of list ORACLE-L
> >
> >
> > Apart from explicity running an ANALYZE command against a table, what,
if
> > any, other events/actions can cause an analyze to be run on the table?
> >
> > -------------------------
> > Seán O' Neill
> > Organon (Ireland) Ltd.
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-- 
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-- 
Author: Yechiel Adar
  INET: adar76_at_inter.net.il

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Author: DENNIS WILLIAMS
  INET: DWILLIAMS_at_LIFETOUCH.COM

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