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define spid = &spid

COLUMN username FORMAT A20
COLUMN event FORMAT A40

SELECT NVL(s.username, '(oracle)') AS username,
       s.sid,
       s.serial#,
       se.event,
       se.total_waits,
       se.total_timeouts,
       se.time_waited,
       se.average_wait,
       se.max_wait,
       se.time_waited_micro
FROM   v$session_event se,
       v$session s,
       v$process p
WHERE  s.sid = se.sid
AND    s.paddr = p.addr
AND    p.spid = &spid
ORDER BY se.time_waited DESC;