I got an email on this. The error is in the Oracle SQL Tuning Pocket Reference from O'reilly. Not the new 'SQL Tuning Book' by Dan Tow. Its on p.79. For the record, this is a very good book. Just one minor mistake. ---------------------------------------------------------------- Please see the official ORACLE-L FAQ: http://www.orafaq.com ---------------------------------------------------------------- To unsubscribe send email to: oracle-l-request@xxxxxxxxxxxxx put 'unsubscribe' in the subject line. -- Archives are at //www.freelists.org/archives/oracle-l/ FAQ is at //www.freelists.org/help/fom-serve/cache/1.html -----------------------------------------------------------------