RE : RE: Query takes ages in Oracle 10G

From: Isabel Bedoya <isabel_bga_at_yahoo.ca>
Date: Thu, 21 Sep 2006 17:26:16 -0400 (EDT)
Message-ID: <20060921212616.44638.qmail@web37906.mail.mud.yahoo.com>

Yeap!.. I just copy paste this query to SQL*Plus, and then I have to kill it with the task manager, it just locks and doesn't return any result at all!. But in Oracle 9i, it returns the values in a matter of seconds

"Allen, Brandon" <Brandon.Allen_at_OneNeck.com> a écrit : If I understand correctly, you're saying that the following query is the problem - it runs slow by itself, regardless of the other sub and parent queries:

SELECT VENCIM_TITULO_NUMERO___

                                FROM   VENCIM
                                WHERE  VENCIM_ESCENA_CODIGO___ = 'REAL' AND
                                       VENCIM_PORTAF_CODIGO___ = 'OBL' AND
                                       VENCIM_ESTADO___ = 2               
   AND
                                       VENCIM_FECCOBORI <= '21/09/2006'

Is that correct?

What was the explain plan for this query when you traced it?

Maybe it is expecting the date predicate to be more selective than it really is so it's using an index there instead of a FTS?

Maybe the problem could be related to auto gathering of histograms in 10g? Try deleting histograms on the table and see if that helps. Or, on the contrary, maybe your auto stats job hasn't run yet in your new 10g database so your stats are absent or out of date?

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Received on Thu Sep 21 2006 - 16:26:16 CDT