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RE: Histograms - SIZE clause & num_buckets anomaly
- From: Wolfgang Breitling <breitliw@xxxxxxxxxxxxx>
- To: oracle-l@xxxxxxxxxxxxx
- Date: Mon, 02 Aug 2004 08:42:54 -0600
At 07:41 AM 8/2/2004, you wrote:
>Thanks Wolfgang,
>
>Yes, doubling the size parameter created frequency based histograms. Seems
>very weird though. BTW, I am seeing exactly the same behaviour in 8.1.7.4
>environment.
I have never seen that in Oracle 8i.
>And unless one is aware of this quirk, this creation of height-based
>histograms instead of f.b. histograms will affect the query execution plans
>adversely, isn't it?
Very possibly.
Regards
Wolfgang Breitling
Centrex Consulting Corporation
www.centrexcc.com
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