Re: optimizer_index_caching and optimizer_index_cost_adj deprecated by system stats?

From: hpuxrac <>
Date: Thu, 13 Mar 2008 13:12:49 -0700 (PDT)
Message-ID: <>

On Mar 13, 3:59 pm, NetComrade <> wrote:
> I was told that  these parameters are somehow replaced by system stats
> in 10g and beyond?
> I can't see how that would be.
> Thanks,
> Andrey
> .......
> We run Oracle 9iR2,10gR1/2, 10gRAC on RH4/RH5 and Solaris 10 (Sparc)
> remove NSPAM to email

Have you looked at what Tom Kyte and Jonathan Lewis have written about this area? Not hard to find this info.

My "reduced size" impression is that both of them are leery of making adjustments to those parameters ( which Tom used to strongly advocate at one time ) in a 10g environment ... depending on what you do regarding gathering system stats. Received on Thu Mar 13 2008 - 15:12:49 CDT

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