SQL (Identify Session Waits) has errors and it should be : SELECT username, V$SESSION_WAIT.sid, V$SESSION_WAIT.event, V$SESSION_WAIT.seq#, V$SESSION_WAIT.seconds_in_wait, V$SESSION_WAIT.wait_time, V$SESSION_WAIT.p1 , V$SESSION_WAIT.p2, V$SESSION_WAIT.p3, V$SESSION_WAIT.state, V$SESSION_WAIT.p1raw, V$SESSION_WAIT.p2raw, V$SESSION_WAIT.p3raw FROM V$SESSION_WAIT, V$SESSION WHERE V$SESSION_WAIT.SID = V$SESSION.SID AND NOT(V$SESSION_WAIT.event like 'SQL%') AND NOT(V$SESSION_WAIT.event like '%message%') AND NOT(V$SESSION_WAIT.event like '%timer%') AND NOT(V$SESSION_WAIT.event like '%pipe get%') AND NOT(V$SESSION_WAIT.event like '%jobq slave wait%') AND NOT(V$SESSION_WAIT.event like '%null event%') AND NOT(V$SESSION_WAIT.event like '%wakeup time%') ORDER BY V$SESSION_WAIT.wait_time desc, event /
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