David: AUX_STAT$ does not have INST_ID in current versions. So there is no way to differentiate the workload patterns across the nodes in the cluster. So I would be little careful in using CPU costing in RAC environments. I have just filed an enhancement request to include INST_ID in AUX_STAT$ so that CPU costing can be used effectively in RAC. ===== Have a nice day !! ------------------------------------------------------------ Best Regards, K Gopalakrishnan, Co-Author: Oracle Wait Interface: Oracle Press 2004. http://www.amazon.com/exec/obidos/tg/detail/-/007222729X/ __________________________________ Do you Yahoo!? Yahoo! Mail - 50x more storage than other providers! http://promotions.yahoo.com/new_mail ---------------------------------------------------------------- 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 -----------------------------------------------------------------