There are 350+ of these so-called pseudo-error debugging events, all listed in ?/rdbms/mesg/oraus.msg. The only catch is that this file is [still] not distributed in the Oracle for Windows distribution set. It's easy to copy it from a Linux installation, however. Cary Millsap Hotsos Enterprises, Ltd. http://www.hotsos.com Nullius in verba Hotsos Symposium 2007 / March 4-8 / Dallas Visit www.hotsos.com for curriculum and schedule details... -----Original Message----- From: Radoulov, Dimitre [mailto:cichomitiko@xxxxxxxxx] Sent: Wednesday, May 03, 2006 10:15 AM To: Cary Millsap Cc: oracle-l@xxxxxxxxxxxxx Subject: Re: *Measuring sql performance (elapsed time and scalability) by number of logical reads > I agree. And that's what we get on the PARSE, EXEC, FETCH, UNMAP, SORT > UNMAP, and STAT lines. It's not presented in a lot of detail, but it's a > tradeoff between detail and measurement intrusion. > > There's certainly more detail available; for example, events 10104, > 10200, etc., but the measurement intrusion is significantly greater for > some of those events than it is for 10046. Thank you very much! I'll check them. Regards, Dimitre -- http://www.freelists.org/webpage/oracle-l