Oracle查看锁表以及解锁

最新推荐文章于 2024-09-13 17:09:00 发布

转载最新推荐文章于 2024-09-13 17:09:00 发布 · 254 阅读

本文介绍了一套用于排查Oracle数据库中锁冲突的方法，包括查询被锁定的表、定位造成死锁的用户进程、以及查找所有DML操作产生的锁等实用SQL语句。

以下几个为相关表

SELECT * FROM v$lock;
SELECT * FROM v$sqlarea;
SELECT * FROM v$session;
SELECT * FROM v$process ;
SELECT * FROM v$locked_object;
SELECT * FROM all_objects;
SELECT * FROM v$session_wait;

查看被锁的表

select b.owner,b.object_name,a.session_id,a.locked_mode from v$locked_object a,dba_objects b where b.object_id = a.object_id;

查看那个用户那个进程照成死锁

select b.username,b.sid,b.serial#,logon_time from v$locked_object a,v$session b where a.session_id = b.sid order by b.logon_time;

查看连接的进程

SELECT sid, serial#, username, osuser FROM v$session;

3.查出锁定表的sid, serial#,os_user_name, machine_name, terminal，锁的type,mode

SELECT s.sid, s.serial#, s.username, s.schemaname, s.osuser, s.process, s.machine,s.terminal, s.logon_time, l.type
FROM v$session s, v$lock l WHERE s.sid = l.sid AND s.username IS NOT NULL ORDER BY sid;