Get info % CPU usage by Session
select ss.username, se.SID, VALUE/100 cpu_usage_seconds from v$session ss, v$sesstat se, v$statname sn where se.STATISTIC# = sn.STATISTIC# and NAME like '%CPU used by this session%' and se.SID = ss.SID and ss.status='ACTIVE' and ss.username is not null order by VALUE desc;
