RE: Optimizer Mode......how to choose the right one?

From: Veronica Levin <vlevin_at_victoria.com.ni>
Date: Tue, 07 Aug 2001 17:01:30 -0700
Message-ID: <F001.003638B8.20010807160549@fatcity.com>

what may be the differences between using this clause and not using it?

Saludos,
Veronica Levin Enriquez
Administrador AIX
Compañía Cervecera de Nicaragua

-----Mensaje original-----
De: deepak thapliyal [mailto:deepakthapliyal_at_yahoo.com] Enviado el: Martes, 07 de Agosto de 2001 05:41 p.m. Para: Multiple recipients of list ORACLE-L Asunto: RE: Optimizer Mode......how to choose the right one?

try analyzing using the "for all indexed columns" clause ..

• "Miller, Jay" <JayMiller_at_TDWaterhouse.com> wrote:
  > You probably already thought of this, but I hope you
  > aren't analyzing the
  > SYS schema? This can cause terrible performance
  > problems.
  >
  > Jay Miller
  >
  > -----Original Message-----
  > Sent: Tuesday, August 07, 2001 12:06 PM
  > To: Multiple recipients of list ORACLE-L
  >
  > ...
  >
  > I tried FIRST_ROWS, analyzing the tables, but users
  > claimed that performance
  > was getting worse, so I chaged it to Choose. Always
  > analyzing the tables....
  >
  > but, everytime I analyze the tables, performance
  > gets worse.
  > Is this a normal behavior?
  >
  > Any advice will be welcome!
  >
  > thanks is advance,
  >
  > Saludos,
  > Veronica Levin Enriquez
  > Administrador AIX
  > Compañía Cervecera de Nicaragua
  > --
  > Please see the official ORACLE-L FAQ:
  > http://www.orafaq.com
  > --
  > Author: Veronica Levin
  > INET: vlevin_at_victoria.com.ni
  >
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-- 
Author: deepak thapliyal
  INET: deepakthapliyal_at_yahoo.com

Fat City Network Services    -- (858) 538-5051  FAX: (858) 538-5051
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Author: Veronica Levin
  INET: vlevin_at_victoria.com.ni

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San Diego, California        -- Public Internet access / Mailing Lists
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Received on Tue Aug 07 2001 - 19:01:30 CDT