This script will list the top 5 database wait events since instance startup sorted by time waited
set linesize 120 col event format a30 select * from ( select event, total_waits, total_timeouts, time_waited from v$system_event where event not like 'SQL*Net%' and event not in ('pmon timer','rdbms ipc message','dispatcher timer','smon timer') order by time_waited desc ) where rownum < 6;
The following two tabs change content below.