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$locked_object a,dba_objects b
where b.object_id = a.object_id;
(3)查看是哪个session引起的
select a.OS_USER_NAME, c.owner, c.object_name, b.sid, b.serial
from v$locked_object a, v$session b, dba_objects c
where a.session_id = b.sid
and a.object_id = c.object_id
order by b.logon_time;
(4)杀掉对应进程
执行命令:alter system kill session '1025,41';
需要用户有权限操作
其中1025为sid
,41为serial
.