Re: performance tuning in large function / transaction

Dear Stephan,

Yes, you are correct. After implementment of your
suggestion, the execution time was half of original
one ( 4 minutes -> 2 minutes ) . Then, I made some
other modifications, execution was about one minute.

The execution time of this type of operation was 3-4
times longer as compare to oracle. :(

M.T.

--- Stephan Szabo <sszabo(at)megazone23(dot)bigpanda(dot)com>
wrote:
> On Mon, 17 Dec 2001, MindTerm wrote:
>
> > select count(*)
> > from ACL a, APPLICATION app
> > where ACL_APP = app.app_id
> > and APP_INSTALLED = 'Y'
> > and ACL_LEVEL > 0
> > and ACL_GALLERY_ID = 1
> > and app.APP_GALLERY_ID = 1
> > and substr(app.app_order,1, 6 ) =
> '021101'
> > and app.app_order <> '021101'
> > and exists
> > (select u.ug_id
> > from user_group u,
> user_group_master
> > ug
> > where a.ACL_GRP = u.ug_id
> > and u.ug_user_id = 5170
> > and ug.ug_id = u.ug_id
> > and (ug.deleted = 'N' or
> ug.deleted
> > IS NULL)
> > and u.gallery_id = 1
> > and ug.gallery_id = 1 );
>
> I don't know if it'll help, but does:
>
> select count(*)
> from ACL a, APPLICATION app, user_group u,
> user_group_master ug
> where ACL_APP = app.app_id
> and APP_INSTALLED = 'Y'
> and ACL_LEVEL > 0
> and ACL_GALLERY_ID = 1
> and app.APP_GALLERY_ID = 1
> and substr(app.app_order,1, 6 ) =
> '021101'
> and app.app_order <> '021101'
> and a.ACL_GRP = u.ug_id
> and u.ug_user_id = 5170
> and ug.ug_id = u.ug_id
> and (ug.deleted = 'N' or
> ug.deleted
> IS NULL)
> and u.gallery_id = 1
> and ug.gallery_id = 1;
>
> give the same results as the original query. Maybe
> that form will work faster. (I'm going to play with
> it a little tomorrow, but since I don't have much
> data
> in there, I'm not sure how well it'll translate)
>
>
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