Optimizing a looping procedure - when to commit

Does anyone have a link to an article that explains when a commit should be timed to be optimal (ie: after X amount of statements or after insertion / updating of Y Mb)?
I have a procedure that loops through and inserts (ugly, but inherited and I have no time to re-code) and I'm not sure how to go about optimizing the commit point other than trial and error. Right now I'm commiting every 1000 interations of a loop, which is faster than 1 but slower than no commits, but how can I figure out what is the best?
Connected to:
Oracle8i Enterprise Edition Release 8.1.7.4.0 - Production
With the Partitioning option
JServer Release 8.1.7.4.0 - Production
Lemme know if more info is needed.
Thanks,
Pete

Yes this is obvious each commit has a small amount of overhead, the more you do the more the overhead adds up.
So the most optimal approach available to you is commit once at the end.
If you have 27 million inserts this may not be possible due to resource issues. Do the tables have a lot of indexes? Try for a commit every 2 million, 1000 is rediculously tiny.
Try the query in this post to see how much undo you use before commiting after 1000, and then multiply up to see how much you can get away with.
Re: Suggestions for improving this update in batches of 100 records
But again, I have run tests before that show LOOP vs SQL is hundreds of times slower, while commiting after every row in the LOOP versus commiting once after the LOOP makes a difference of a few percent, so I do not think you are going to squeeze much of a runtime improvement just be reducing the commit frequency.

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Go to Solution.
Attachments:
Chassis919Tester.vi ‏51 KB
Symmetrical_Pulse_Generator.vi ‏55 KB

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