oracle查看死锁的sql,Oracle检查死锁的sql（转）

检查Oracle死锁SQL

最新推荐文章于 2024-10-24 22:23:23 发布

转载最新推荐文章于 2024-10-24 22:23:23 发布 · 1.7k 阅读

文章标签：

#oracle查看死锁的sql

本文提供了一种使用SQL语句检查Oracle数据库中死锁的方法。包括两种查询方式：一种是简单查询，显示进程间的阻塞关系；另一种是详细查询，展示阻塞进程与等待进程的详细信息。

检查死锁的sql语句

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;