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Oracle starts official optimizer blog

The Oracle optimizer developers in Redwood shores have just introduced a new blog dedicated to revealing the internals of the Oracle cost-based SQL optimizer (CBO):

http://optimizermagic.blogspot.com/

This is the "go to" place for details about the Oracle cost-based optimizer, directly from the software engineers who wrote the optimizer!

The Oracle CBO has gotten a "bum rap" in the past because of problems with the DBA collecting sufficient metadata (with dbms_stats), and this blog sets the record straight about optimizing SQL within Oracle.

See my related CBO notes here:



 

 
 
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