RE: converting to the cost based optimizer

From: Cary Millsap <cary.millsap_at_hotsos.com>
Date: Tue, 19 Nov 2002 15:48:43 -0800
Message-ID: <F001.00507672.20021119154843@fatcity.com>

A tool we've built to help solve the problem is described at www.hotsos.com/products/laredo.

Cary Millsap
Hotsos Enterprises, Ltd.
http://www.hotsos.com

Upcoming events:

- Hotsos Clinic, Dec 9-11 Honolulu
- 2003 Hotsos Symposium on Oracle® System Performance, Feb 9-12 Dallas
- Jonathan Lewis' Optimising Oracle, Nov 19-21 Dallas

-----Original Message-----
stephane
Sent: Tuesday, November 19, 2002 3:50 PM To: Multiple recipients of list ORACLE-L

We will be in the same process soon.
We'll have to consolidate over 100 instances to something between 40-60 instances and switch from RBO to CBO.

Any tips are welcome.

• Steve McClure <smcclure_at_usscript.com> a écrit : > I am just starting to look at converting to the cost
  > based optimizer, and am
  > hoping a few of you can share insights from having
  > done so in the past. Our
  > application is an oltp system developed on 7.3.4.
  > We made liberal use of
  > +0 and other RBO "hints", and I am wondering if
  > these are going to cause us
  > troubles when switching to CBO.
  >
  > We have been on 8i since April of this year, and I
  > am just now starting to
  > gather information on the inner workings of the CBO.
  > I know it is where I
  > want to be, I am just looking to see how
  > painful/painless the transition
  > will be.
  >
  > Steve McClure
  >
  > --
  > Please see the official ORACLE-L FAQ:
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  > --
  > Author: Steve McClure
  > INET: smcclure_at_usscript.com
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Stéphane Paquette
DBA Oracle et DB2, consultant entrepôt de données Oracle and DB2 DBA, datawarehouse consultant stephane_paquette_at_yahoo.com

---

Lèche-vitrine ou lèche-écran ?
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-- 
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-- 
Author: Cary Millsap
  INET: cary.millsap_at_hotsos.com

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Received on Tue Nov 19 2002 - 17:48:43 CST