Chris: I don't see any event names for the top3 events in the listing. Is it because of the formatting or not displayed in the listing? Btw I have got very good results with ASM on heavy concurrency (4000+ sessions on a single table) environments. I see no reason for ASM peforming slower.. -- Best Regards, K Gopalakrishnan Co-Author: Oracle Wait Interface, Oracle Press 2004 http://www.amazon.com/exec/obidos/tg/detail/-/007222729X/ -- //www.freelists.org/webpage/oracle-l