John
[EMAIL PROTECTED] wrote:
not much - desire is to keep sql ANSI compliant due to cross-platform issues
(want to be able to run the app on multiple db's)
-----Original Message-----
Sent: Thu, March 07, 2002 2:44 PM
To: Multiple recipients of list ORACLE-L
How much have you played with Oracle Hints???
-Joe
--- "Magaliff, Bill" <[EMAIL PROTECTED]> wrote:I work in a dev shop - most of the sql is canned and pretty basic.
We've
been running CBO in all of our dev environments, but we have a few
long txns
that just take forever. At the request of some savvy developers, I
turned
on RBO, and it brought down execution times dramatically.
I've been analyzing affected tables often (we do a lot of bulk
load/unload
for testing), and have played with partitioning and clustering,
particularly
on one table that's just a dog. CBO will always do a FTS where RBO
uses the
PK to retrieve data.
Where to go next? I've been unable to alter the costs dramatically
enough
to make any real difference in execution time.
thx
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--
Author: Magaliff, Bill
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