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Oracle数据库检查死锁的sql

 2008-12-17 13:06:41 来源:WEB开发网   
核心提示:实现代码如下:SELECT SID, DECODE (BLOCK, 0, 'NO', 'YES') blocker, DECODE (request, 0, 'NO', 'YES') waiterFROM v$lock WHERE request >

实现代码如下:

SELECT  SID, DECODE (BLOCK, 0, 'NO', 'YES') blocker,
     DECODE (request, 0, 'NO', 'YES') waiter
  FROM v$lock
  WHERE request > 0 OR BLOCK > 0
ORDER BY BLOCK DESC;
SELECT  bs.username "Blocking User", bs.username "DB User",
     ws.username "Waiting User", bs.SID "SID", ws.SID "WSID",
     bs.serial# "Serial#", 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#",
     ws.serial# "WSerial#",
     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,
     TO_CHAR (hk.id1) lock_id1, TO_CHAR (hk.id2) lock_id2,
     DECODE
      (hk.BLOCK,
       0, 'NOT Blocking',     /**//* Not blocking any other processes */
       1, 'Blocking',       /**//* This lock blocks other processes */
       2, 'Global',     /**//* This lock is global, so we can't tell */
       TO_CHAR (hk.BLOCK)
      ) blocking_others
  FROM v$lock hk, v$session bs, v$lock wk, v$session ws
  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 (bs.username IS NOT NULL)
   AND (bs.username <> 'SYSTEM')
   AND (bs.username <> 'SYS')
ORDER BY 1;

Tags:Oracle 数据库 检查

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