RE: Using DUAL

Oracle Perf Tuning by O'Reilly mentions it, but without explanation:

http://www.oreilly.com/catalog/oracle2/chapter/ch10.html

There's more, too. Try searching for "dual performance iterative OR loop oracle" on google.com

HTH! :)

Rich Jesse                           System/Database Administrator
Rich.Jesse_at_qtiworld.com              Quad/Tech International, Sussex, WI USA

-----Original Message-----
Sent: Thursday, May 30, 2002 11:23 AM
To: Multiple recipients of list ORACLE-L

The developers here have a fondness for using DUAL for simple operations
(select count(*) from dual is executed 10000+ times per day). I recall a
passing comment somewhere/sometime that there are performance issues with accessing DUAL. Of course, now that I need to provide some information to the developers, I can't recall the comment or find documentation.  

Any assistance is greatly appreciated.
Daniel W. Fink

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