Re: RE: query slow in 9i, but not slow in 8i

  • From: "Jonathan Lewis" <jonathan@xxxxxxxxxxxxxxxxxx>
  • To: <oracle-l@xxxxxxxxxxxxx>
  • Date: Wed, 3 Mar 2004 16:02:47 -0000

That's nothing - I built one query that
took over 4 hours to parse.  Mind you,
it was 255 tables, and rule based.

(CBO parsed it in less than a second)


Regards

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

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

March 2004 Hotsos Symposium - The Burden of Proof
  Dynamic Sampling - an investigation
March 2004 Charlotte OUG (www.cltoug.org) CBO Tutorial
April 2004 Iceland
June  2004      UK - Optimising Oracle Seminar


----- Original Message ----- 
From: "Mladen Gogala" <mladen@xxxxxxxxxxxxxxx>
To: <oracle-l@xxxxxxxxxxxxx>
Sent: Wednesday, March 03, 2004 2:23 PM
Subject: Re: RE: query slow in 9i, but not slow in 8i


> Parse time over a minute? Was it a huge query or not? I find it hard to
believe.
>
>


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