is this one of your top 5 wait events ? col "Average Time" format 999.999 SELECT V$SYSSTAT.VALUE*10 / (select value from v$sysstat where name = 'global cache gets') "Average Time" FROM V$SYSSTAT WHERE V$SYSSTAT.NAME = 'global cache get time' / Average Time ------------ 19.883 -- //www.freelists.org/webpage/oracle-l