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| /*
Comment détecter les verrous (locks)
*/
SELECT /*+ choose */
bs.username "Blocking User",
bs.username "DB User",
ws.username "Waiting User",
bs.sid "SID",
ws.sid "WSID",
bs.sql_address "address",
bs.sql_hash_value "Sql hash",
bs.program "Blocking App",
ws.program "Waiting App",
bs.machine "Blocking Machine",
ws.machine "Waiting Machine",
bs.osuser "Blocking OS User",
ws.osuser "Waiting OS User",
bs.serial# "Serial#",
DECODE (
wk.TYPE,
'MR', 'Media Recovery',
'RT', 'Redo Thread',
'UN', 'USER Name',
'TX', 'Transaction',
'TM', 'DML',
'UL', 'PL/SQL USER LOCK',
'DX', 'Distributed Xaction',
'CF', 'Control FILE',
'IS', 'Instance State',
'FS', 'FILE SET',
'IR', 'Instance Recovery',
'ST', 'Disk SPACE Transaction',
'TS', 'Temp Segment',
'IV', 'Library Cache Invalidation',
'LS', 'LOG START OR Switch',
'RW', 'ROW Wait',
'SQ', 'Sequence Number',
'TE', 'Extend TABLE',
'TT', 'Temp TABLE',
wk.TYPE
) lock_type,
DECODE (
hk.lmode,
0, 'None',
1, 'NULL',
2, 'ROW-S (SS)',
3, 'ROW-X (SX)',
4, 'SHARE',
5, 'S/ROW-X (SSX)',
6, 'EXCLUSIVE',
TO_CHAR (hk.lmode)
) mode_held,
DECODE (
wk.request,
0, 'None',
1, 'NULL',
2, 'ROW-S (SS)',
3, 'ROW-X (SX)',
4, 'SHARE',
5, 'S/ROW-X (SSX)',
6, 'EXCLUSIVE',
TO_CHAR (wk.request)
) mode_requested,
object_name ,
TO_CHAR (hk.id1) lock_id1,
TO_CHAR (hk.id2) lock_id2
FROM v$lock hk, v$session bs, v$lock wk, v$session ws , V$LOCKED_OBJECT a ,
dba_objects b
WHERE hk.BLOCK = 1
AND hk.lmode != 0
AND hk.lmode != 1
AND wk.request != 0
AND wk.TYPE(+) = hk.TYPE
AND wk.id1(+) = hk.id1
AND wk.id2(+) = hk.id2
AND hk.sid = bs.sid(+)
AND wk.sid = ws.sid(+)
AND a.object_id=b.object_id
AND hk.sid=a.session_id
ORDER BY 1; |
