Hello list, If I have CPU time as my top most wait, what should I look for reducing it? Below are my top fives events and almost always, the top wait event is CPU Time . Top 5 Timed Events ~~~~~~~~~~~~~~~~~~ % Total Event Waits Time (s) Ela Time -------------------------------------------- ------------ ----------- -------- CPU time 4,625 91.49 db file sequential read 95,317 140 2.76 log file sync 47,051 118 2.33 log file parallel write 55,772 79 1.56 SQL*Net more data to client 46,977 69 1.36 Application background: My application is an oline share trading application. We have only 3 hours in the morning and 3 hours in the evening trading session. -- Best Regards, Jaffar, OCP DBA Banque Saudi Fransi Saudi Arabia -- //www.freelists.org/webpage/oracle-l