RE: cost

From: Jesse, Rich <Rich.Jesse_at_quadtechworld.com>
Date: Mon, 5 Apr 2004 09:59:49 -0500
Message-ID: <FBE1FCA40ECAD41180400050DA2BC54004E9384D@qtiexch2.qgraph.com>

But beware that for 8.1.7.4, histograms are ignored if you're using bind variables, either explicitly or via the infamous CURSOR_SHARING=FORCE init.ora parameter.

Rich

Rich Jesse                        System/Database Administrator
rich.jesse_at_quadtechworld.com      QuadTech, Sussex, WI USA

[terribly snipped]
> From: Bobak, Mark [mailto:Mark.Bobak_at_il.proquest.com]
>
> WHY the CBO
> thinks a particular plan is lower cost than another and then give the
> CBO better information so that it can more accurately estimate plan
> costs.
>
> Ways to do this may include:
> - add histograms for some skewed columns

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Received on Mon Apr 05 2004 - 09:58:13 CDT