Re: Why isn't Oracle using my index ? <humour>

This is just me showing how key features of the optimizer work by demonstrating how you can break it.

If time permits, I'll describe how I did it in my CBO presentation at IOUG-A on Monday.

(And I'll let the rest of the list know after IOUG-A is over).

Yes, the table was analyzed - compute,
and the statistics were accurate.

Regards

Jonathan Lewis
http://www.jlcomp.demon.co.uk

  The educated person is not the person
  who can answer the questions, but the
  person who can question the answers -- T. Schick Jr

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The Co-operative Oracle Users' FAQ
http://www.jlcomp.demon.co.uk/faq/ind_faq.html

• Original Message ----- To: "Multiple recipients of list ORACLE-L" <ORACLE-L_at_fatcity.com> Sent: 25 April 2003 15:10

> Is this a change in 9i, or what it just a myth carried over from
version to
> version?
>
> The optimizer is supposed to be able to assess when to use an index
vs. when
> not to use one.
>
> Were your tables analyzed?
>
> Pat.
>
> -----Original Message-----
> Sent: Thursday, April 24, 2003 6:22 PM
> To: Multiple recipients of list ORACLE-L
>
>

-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.net
-- 
Author: Jonathan Lewis
  INET: jonathan_at_jlcomp.demon.co.uk

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