Why don't you leave that parameter unset and let you CBO to make an
appropriate decision? CBO has all the necessary information: block density,
number of rows, hash size estimate etc. and can probably make an itelligent
decision. After all, CBO was written by the very same people who wrote OUI,
which was dicussed in a separate thread.
On 2003.05.21 07:56 rgaffuri_at_cox.net wrote:
> so am I correct in saying that you should use hash joins when you need to return large amounts of data in the result set? Its not appropriate every time. So setting 'always semi join' to hash is not appropriate.
--
Mladen Gogala
Oracle DBA
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Please see the official ORACLE-L FAQ: http://www.orafaq.net
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Author: Mladen Gogala
INET: mgogala_at_adelphia.net
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Received on Wed May 21 2003 - 09:11:38 CDT
