SET TIME ON VERIFY OFF

COLUMN    event                  FORMAT A30         HEADING 'Event'    TRUNCATE
COLUMN    wait_state             FORMAT A7          HEADING 'State'
COLUMN    seconds_in_wait        FORMAT 999999      HEADING 'Time|Waiting'
COLUMN    wait_time              FORMAT 999999      HEADING 'Time|Waited'
COLUMN    p1                     FORMAT A20         HEADING 'P1'       TRUNCATE
COLUMN    p2                     FORMAT A20         HEADING 'P2'       TRUNCATE
COLUMN    p3                     FORMAT A20         HEADING 'P3'       TRUNCATE



SELECT     vswh.event, 
           CASE WHEN vswh.state = 'WAITING' THEN vswh.state
                ELSE 'WAITED'
           END  wait_state, 
           vswh.seconds_in_wait,
           vswh.wait_time,
           DECODE(vswh.p1text, NULL, NULL, vswh.p1text||'='||vswh.p1) p1, 
           DECODE(vswh.p2text, NULL, NULL, vswh.p2text||'='||vswh.p2) p2, 
           DECODE(vswh.p3text, NULL, NULL, vswh.p3text||'='||vswh.p3) p3 
FROM       v$session_wait_history vswh
WHERE      vswh.sid = &&user_sid 
ORDER BY   vswh.seq# DESC
/

UNDEFINE user_sid