Re: Optimizer and block size changes = trouble...

SAS=2M, CACHING=50, ADJ=10.
My HASH was 10M, then dropped it down
all the way to 260K, at which stage it
threw out the MERGE JOIN CARTESIAN and went back to HASH JOIN only. So I threw it out completely (default 0), which would have made it 2M given that SAS dependency. But the MERGE JOIN CARTESIAN did disappear with HASH defaulted, even though it was there while I tried HASH 2M! More mystery...

So far, Anjo Kolk has provided me with the most plausible explanation and it has nothing to do with any of these parameters...

Cheers
Nuno Souto
nsouto_at_nsw.bigpond.net.au
http://www.users.bigpond.net.au/the_Den
----- Original Message -----

> Default value of hash_area_size is sort_area_size. What was your
> sort_area_size, and also what values of OPTIMIZER_INDEX_CACHING and
> OPTIMIZER_INDEX_COST_ADJ did you finally use?
>

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-- 
Author: Nuno Souto
  INET: nsouto_at_nsw.bigpond.net.au

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