RE: Horrendous Execution Plan from CBO

Mark,

> Do any of you SQL tuning gurus have any suggestions? I've
> listed all the
> gory details below.

I am not a SQL tuning guru, but it looks like this is an ideal example where Hash joins would be of immense help. You could set a largish value for HASH_AREA_SIZE (defaults to twice SORT_AREA_SIZE) to reduce visits to TEMP to write out hash tables... It would be nice if you could post the explain/costs for all three methods at the end of your tests.

John Kanagaraj
Oracle Applications DBA
DBSoft Inc
(W): 408-970-7002

The manuals for Oracle are here: http://tahiti.oracle.com The manual for Life is here: http://www.gospelcom.net

• The opinions and statements above are entirely my own and not those of my employer or clients **

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