Oracle FAQ Your Portal to the Oracle Knowledge Grid
HOME | ASK QUESTION | ADD INFO | SEARCH | E-MAIL US
 

Home -> Community -> Mailing Lists -> Oracle-L -> RE: Long execute phase for SELECT query

RE: Long execute phase for SELECT query

From: <oracle-l-bounce_at_freelists.org>
Date: Tue, 27 Jun 2006 17:03:31 -0700
Message-ID: <04DDF147ED3A0D42B48A48A18D574C45059E199A@NT15.oneneck.corp>


Just found this probable explanation in Metalink note 199273.1:

Subject: Overview of SQL Statement Processing Phases

Certain phases may be repositioned dependant on the query submitted. Oracle may combine steps or defer them to a later stage. For example, if bind variable 'peeking' is in operation, then the optimizer needs to use the first 'bound' value to determine the execution plan for the query. This means that optimization will actually occur in the EXECUTE phase as this is the first time that any bind variable values are available.   

Privileged/Confidential Information may be contained in this message or attachments hereto. Please advise immediately if you or your employer do not consent to Internet email for messages of this kind. Opinions, conclusions and other information in this message that do not relate to the official business of this company shall be understood as neither given nor endorsed by it.

--
http://www.freelists.org/webpage/oracle-l
Received on Tue Jun 27 2006 - 19:03:31 CDT

Original text of this message

HOME | ASK QUESTION | ADD INFO | SEARCH | E-MAIL US