Have you tried indexing? This will help with some of your stats from a basic SQL Plus session:

set autotrace traceonly

<< your query here >>

select a.*,b.* from table_a a, table_b b where a.key=b.key;





-----Original Message-----
From: Anthony Molinaro
[mailto:oracledba-ezmlmshield-x27645840.[Email address protected]
Sent: Friday, January 27, 2006 2:37 PM
To: LazyDBA Discussion
Subject: RE: sql tuning.


Jenny,
Since it's only one query can you post the query and some stats?
Maybe we can tweak it a bit before you go and partition your tables
and try parallel sql.

Regards,
Anthony


-----Original Message-----
From: Jenny
[mailto:oracledba-ezmlmshield-x96208125.[Email address protected]
Sent: Friday, January 27, 2006 5:33 PM
To: LazyDBA Discussion
Subject: sql tuning.

Hi, gurus!

Any one had a positive experience with using partitioning/parallel
select on a small-ish databases? I am getting desperate ...
Must improve performance of one query, which performs decently, but I am
asked to "improve", and seems like no matter what I try I am hitting a
wall.
I know my question is too generic, and it is all too
environment-dependent...so I am looking for an inspiration! Any war
stories appreciated.

Thanks,
Jenny

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