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Re: When does performance worsen when going from RULE to COST

From: Nuno Souto <nsouto_at_nsw.bigpond.net.au.nospam>
Date: Wed, 09 Feb 2000 10:23:28 GMT
Message-ID: <38a13ace.7116691@news-server>


On Tue, 08 Feb 2000 13:28:51 GMT, karsten_schmidt8891_at_my-deja.com wrote:

>IMO consistency (== predictable performance) is more important
>than a 'smart' optimiser that works 99% of the time. So, I agree on
>your recommendation not to use CBO.
>But what are you going to do once RBO is phased out ? Oracle has been
>talking about that for years. Fortunatly, they did'nt do it until now,
>but if they do ?????

Hmm, I think the phasing out of RBO ranks up there with the phasing out of OCI: a non-event.

Cheers
Nuno Souto
nsouto_at_nsw.bigpond.net.au.nospam
http://www.users.bigpond.net.au/the_Den/index.html Received on Wed Feb 09 2000 - 04:23:28 CST

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