RE: optimizer_index_cost_adj and optimizer_index_caching

From: Niall Litchfield <n-litchfield_at_audit-commission.gov.uk>
Date: Tue, 09 Mar 2004 09:01:23 +0000
Message-Id: <s04d87ef.069@bristol21.bristol.ac>

Thanks Joze and Wolfgang

I'm in a position where gathering system stats seems to me to be the Right Thing (tm) to do, certainly an advance on setting parameters based on guesses/measurements ahead of time. I hadn't until now seen any indications as to whether the feature worked as advertised or if in fact gathering system stats introduced for example unexpected and unwanted plan changes, curious bugs etc etc. In fact I hadn't seen *any* feedback at all which made me suspicious that anyone was actually using it - I guess folks recall the introduction of the CBO which was equally the right thing to do but..

Niall Litchfield
Oracle DBA
Audit Commission
+44 117 975 7805

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Received on Tue Mar 09 2004 - 02:58:18 CST