set pages 1000

set lines 120

set heading off

column w_proc format a50 tru

column instance format a20 tru

column inst format a28 tru

column wait_event format a50 tru

column p1 format a16 tru

column p2 format a16 tru

column p3 format a15 tru

column Seconds format a50 tru

column sincelw format a50 tru

column blocker_proc format a50 tru

column waiters format a50 tru

column chain_signature format a100 wra

column blocker_chain format a100 wra

SELECT *

FROM (SELECT 'Current Process: '||osid W_PROC, 'SID '||i.instance_name INSTANCE,

'INST #: '||instance INST,'Blocking Process: '||decode(blocker_osid,null,'<none>',blocker_osid)||

' from Instance '||blocker_instance BLOCKER_PROC,'Number of waiters: '||num_waiters waiters,

'Wait Event: ' ||wait_event_text wait_event, 'P1: '||p1 p1, 'P2: '||p2 p2, 'P3: '||p3 p3,

'Seconds in Wait: '||in_wait_secs Seconds, 'Seconds Since Last Wait: '||time_since_last_wait_secs sincelw,

'Wait Chain: '||chain_id ||': '||chain_signature chain_signature,'Blocking Wait Chain: '||decode(blocker_chain_id,null,

'<none>',blocker_chain_id) blocker_chain

FROM v$wait_chains wc,

v$instance i

WHERE wc.instance = i.instance_number (+)

AND ( num_waiters > 0

OR ( blocker_osid IS NOT NULL

AND in_wait_secs > 10 ) )

ORDER BY chain_id,

num_waiters DESC)

WHERE ROWNUM < 101