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oracle查看锁和释放锁

详见:http://blog.yemou.net/article/query/info/tytfjhfascvhzxcyt108

Oracle数据库操作中,我们有时会用到锁表查询以及解锁和kill进程等操作,那么这些操作是怎么实现的呢?本文我们主要就介绍一下这部分内容。

(1)锁表查询的代码有以下的形式:

select count(*) from v$locked_object;

select * from v$locked_object;

(2)查看哪个表被锁

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;

(3)查看是哪个session引起的

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; 

(4)杀掉对应进程

执行命令:alter system kill session‘1025,41‘;

其中1025为sid,41为serial#.

 

oracle查看锁和释放锁