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RE: Forcing SQL query to use 2 index hints

From: Stauffer, Robert G <rstauffer_at_decommunications.com>
Date: Fri, 9 Sep 2005 11:27:11 -0400
Message-ID: <DBD57944BD147146A3FA5E66983322E40380C1A8@CL-EXCHANGE1.dande.com>


Try the following per "Specifying a Full Set of Hints" in the 9ir2 Performance Tuning Guide and Reference

SELECT /*+ index(a index_A) index(b index_B) */ column1,column2,column3,column4

    from table_a a,table_b b
where a.something = b.something;

Bob Stauffer
DBA
D&E Communications
Ephrata, PA, USA
717-738-8737
rstauffer_at_decommunications.com

-----Original Message-----

From: oracle-l-bounce_at_freelists.org
[mailto:oracle-l-bounce_at_freelists.org] On Behalf Of Fred Smith Sent: Friday, September 09, 2005 11:17
To: oracle-l_at_freelists.org
Subject: Forcing SQL query to use 2 index hints

Hello all,
  I am attempting to force a query to use 2 index hints, but am not having
any luck with finding the correct syntax.

  The query works, and if I add 1 index hint, the explain plan output shows
that it is using the index I specify. However, I need it to use 2 hints:

What is the correct syntax?

SELECT /*+ index(a index_A, b index_B) */ column1,column2,column3,column4

    from table_a a,table_b b
where a.something = b.something;

(The above is not using "index_B" .... how do I force it to use index_B??
Only index_A is being used. What is the correct syntax?)

Thank you!!!!!



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http://www.freelists.org/webpage/oracle-l Received on Fri Sep 09 2005 - 10:31:30 CDT

Original text of this message

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