RE: Gathering of Statistics
Date: Fri, 25 Jan 2008 14:52:38 +0000
Message-ID: <7BEB0888F69BF046870D207FF0E6CAE833E6A54A68@lagan-exch-2.lagan.com>
If the supplier gave the following statement:
Dbms_stats.gather_schema_stats(ownname=>user,cascade=>true,method_opt=>'FOR ALL INDEXED COLUMNS SIZE 254')
And said to run it once a week, would you do it.
The reason I ask is the supplier did supply the statement to run and told us to run it once a week. But after running it a week ago the performance of the application dropped to become almost unusable. The drop in performance occurred after gathering the stats. When asked for assistance they told us to rerun the statement and it should fix the problem. But the statement is the problem.
Ronnie
From: oracle-l-bounce_at_freelists.org [mailto:oracle-l-bounce_at_freelists.org] On Behalf Of Andrew Kerber Sent: 25 January 2008 13:30
To: jack_at_vanzanen.com
Cc: Ronnie Doggart; oracle-l_at_freelists.org Subject: Re: Gathering of Statistics
I agree. The vendor should be able to provide information about where and when, but you have to provide the script.
Siebel is notorious for needing special consideration when gathering statistics. On Jan 25, 2008 6:10 AM, Jack van Zanen <jack_at_vanzanen.com> wrote: I do not expect them to supply the scripts, however I do expect them to be able to supply the information needed for proper statistics.
It often is a futile expectation though.
Jack
On 25/01/2008, Ronnie Doggart <ronnie_doggart_at_lagan.com> wrote: Hi All,
If you purchase an application from a supplier would you expect them to supply a script for gathering statistics on their schema and to make recommendations on how frequently the statistics should be gathered ?
Ronnie
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Andrew W. Kerber
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Received on Fri Jan 25 2008 - 08:52:38 CST