Lock 監視

取得目前session狀態,及是否lock優化版
速度快很多
select  /*+ ordered */ <==加上這個會快很多
   c.sid,
        c.serial#,
        b.ctime,
   lock_waiter.waiting_session,
   lock_blocker.holding_session,
   c.program,
   c.osuser,
   c.machine,
   c.process,
   decode(u.name,
      null,'',
      u.name||'.'||o.name
   ) object,
   c.username,
   decode
   (
      b.type,
      'BL', 'Buffer hash table instance lock',
      'CF', 'Control file schema global enqueue lock',
      'CI', 'Cross-instance function invocation instance lock',
      'CU', 'Cursor bind lock',
      'DF', 'Data file instance lock',
      'DL', 'direct loader parallel index create lock',
      'DM', 'Mount/startup db primary/secondary instance lock',
      'DR', 'Distributed recovery process lock',
      'DX', 'Distributed transaction entry lock',
      'FS', 'File set lock',
      'IN', 'Instance number lock',
      'IR', 'Instance recovery serialization global enqueue lock',
      'IS', 'Instance state lock',
      'IV', 'Library cache invalidation instance lock',
      'JQ', 'Job queue lock',
      'KK', 'Thread kick lock',
      'LA','Library cache lock instance lock (A..P=namespace);',
      'LB','Library cache lock instance lock (A..P=namespace);',
      'LC','Library cache lock instance lock (A..P=namespace);',
      'LD','Library cache lock instance lock (A..P=namespace);',
      'LE','Library cache lock instance lock (A..P=namespace);',
      'LF','Library cache lock instance lock (A..P=namespace);',
      'LG','Library cache lock instance lock (A..P=namespace);',
      'LH','Library cache lock instance lock (A..P=namespace);',
      'LI','Library cache lock instance lock (A..P=namespace);',
      'LJ','Library cache lock instance lock (A..P=namespace);',
      'LK','Library cache lock instance lock (A..P=namespace);',
      'LL','Library cache lock instance lock (A..P=namespace);',
      'LM','Library cache lock instance lock (A..P=namespace);',
      'LN','Library cache lock instance lock (A..P=namespace);',
      'LO','Library cache lock instance lock (A..P=namespace);',
      'LP','Library cache lock instance lock (A..P=namespace);',
      'MM', 'Mount definition global enqueue lock',
      'MR', 'Media recovery lock',
      'NA', 'Library cache pin instance lock (A..Z=namespace)',
      'NB', 'Library cache pin instance lock (A..Z=namespace)',
      'NC', 'Library cache pin instance lock (A..Z=namespace)',
      'ND', 'Library cache pin instance lock (A..Z=namespace)',
      'NE', 'Library cache pin instance lock (A..Z=namespace)',
      'NF', 'Library cache pin instance lock (A..Z=namespace)',
      'NG', 'Library cache pin instance lock (A..Z=namespace)',
      'NH', 'Library cache pin instance lock (A..Z=namespace)',
      'NI', 'Library cache pin instance lock (A..Z=namespace)',
      'NJ', 'Library cache pin instance lock (A..Z=namespace)',
      'NK', 'Library cache pin instance lock (A..Z=namespace)',
      'NL', 'Library cache pin instance lock (A..Z=namespace)',
      'NM', 'Library cache pin instance lock (A..Z=namespace)',
      'NN', 'Library cache pin instance lock (A..Z=namespace)',
      'NO', 'Library cache pin instance lock (A..Z=namespace)',
      'NP', 'Library cache pin instance lock (A..Z=namespace)',
      'NQ', 'Library cache pin instance lock (A..Z=namespace)',
      'NR', 'Library cache pin instance lock (A..Z=namespace)',
      'NS', 'Library cache pin instance lock (A..Z=namespace)',
      'NT', 'Library cache pin instance lock (A..Z=namespace)',
      'NU', 'Library cache pin instance lock (A..Z=namespace)',
      'NV', 'Library cache pin instance lock (A..Z=namespace)',
      'NW', 'Library cache pin instance lock (A..Z=namespace)',
      'NX', 'Library cache pin instance lock (A..Z=namespace)',
      'NY', 'Library cache pin instance lock (A..Z=namespace)',
      'NZ', 'Library cache pin instance lock (A..Z=namespace)',
      'PF', 'Password File lock',
      'PI', 'Parallel operation locks',
      'PS', 'Parallel operation locks',
      'PR', 'Process startup lock',
      'QA','Row cache instance lock (A..Z=cache)',
      'QB','Row cache instance lock (A..Z=cache)',
      'QC','Row cache instance lock (A..Z=cache)',
      'QD','Row cache instance lock (A..Z=cache)',
      'QE','Row cache instance lock (A..Z=cache)',
      'QF','Row cache instance lock (A..Z=cache)',
      'QG','Row cache instance lock (A..Z=cache)',
      'QH','Row cache instance lock (A..Z=cache)',
      'QI','Row cache instance lock (A..Z=cache)',
      'QJ','Row cache instance lock (A..Z=cache)',
      'QK','Row cache instance lock (A..Z=cache)',
      'QL','Row cache instance lock (A..Z=cache)',
      'QM','Row cache instance lock (A..Z=cache)',
      'QN','Row cache instance lock (A..Z=cache)',
      'QP','Row cache instance lock (A..Z=cache)',
      'QQ','Row cache instance lock (A..Z=cache)',
      'QR','Row cache instance lock (A..Z=cache)',
      'QS','Row cache instance lock (A..Z=cache)',
      'QT','Row cache instance lock (A..Z=cache)',
      'QU','Row cache instance lock (A..Z=cache)',
      'QV','Row cache instance lock (A..Z=cache)',
      'QW','Row cache instance lock (A..Z=cache)',
      'QX','Row cache instance lock (A..Z=cache)',
      'QY','Row cache instance lock (A..Z=cache)',
      'QZ','Row cache instance lock (A..Z=cache)',
      'RT', 'Redo thread global enqueue lock',
      'SC', 'System commit number instance lock',
      'SM', 'SMON lock',
      'SN', 'Sequence number instance lock',
      'SQ', 'Sequence number enqueue lock',
      'SS', 'Sort segment locks',
      'ST', 'Space transaction enqueue lock',
      'SV', 'Sequence number value lock',
      'TA', 'Generic enqueue lock',
      'TS', 'Temporary segment enqueue lock (ID2=0)',
      'TS', 'New block allocation enqueue lock (ID2=1)',
      'TT', 'Temporary table enqueue lock',
      'UN', 'User name lock',
      'US', 'Undo segment DDL lock',
      'WL', 'Being-written redo log instance lock',
      b.type
   ) lock_type,
   decode
   (
      b.lmode,
      0, 'None',           /* Mon Lock equivalent */
      1, 'Null',           /* N */
      2, 'Row-S (SS)',     /* L */
      3, 'Row-X (SX)',     /* R */
      4, 'Share',          /* S */
      5, 'S/Row-X (SRX)',  /* C */
      6, 'Exclusive',      /* X */
      to_char(b.lmode)
   ) mode_held,
   decode
   (
      b.request,
      0, 'None',           /* Mon Lock equivalent */
      1, 'Null',           /* N */
      2, 'Row-S (SS)',     /* L */
      3, 'Row-X (SX)',     /* R */
      4, 'Share',          /* S */
      5, 'S/Row-X (SSX)',  /* C */
      6, 'Exclusive',      /* X */
      to_char(b.request)
   ) mode_requested
from v$lock b,
     v$session c,
     sys.user$ u,
     sys.obj$ o,
     (select * from sys.dba_waiters) lock_blocker,
     (select * from sys.dba_waiters) lock_waiter
where b.sid = c.sid
and u.user# = c.user#
and o.obj#(+) = b.id1
and lock_blocker.waiting_session(+) = c.sid
and lock_waiter.holding_session(+) = c.sid
and c.username != 'SYS'
order by ctime desc, object, kaddr, lockwait