Re: Gathering of Statistics

I would seriously demand an explanation from the supplier. I received instructions to run an almost identical command daily from one of my suppliers, and it works perfectly. Keeps the performance right where it should be. ymmv.

On Jan 25, 2008 8:52 AM, Ronnie Doggart <ronnie_doggart_at_lagan.com> wrote:

> 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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> The views and opinions expressed in this email may not reflect the views
> and opinions of any member of Lagan Technologies Limited, or any of its
> subsidiaries.
>
> Lagan Technologies Limited is a company registered in Northern Ireland
> with registration number NI 28773. The registered office of Lagan
> Technologies Limited is 209 Airport Road West, Belfast, Co. Antrim, BT3 9EZ.
>
>

-- 
Andrew W. Kerber

'If at first you dont succeed, dont take up skydiving.'

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