SQL> select session_id from v$locked_object;
SESSION_ID
----------
142
SQL> SELECT sid, serial#, username, osuser FROM v$session where sid = 142;
SID SERIAL# USERNAME OSUSER
---------- ---------- ------------------------------ ------------------------------
142 38 SCOTT LILWEN
SQL> ALTER SYSTEM KILL SESSION '142,38';
System altered
SQL> SELECT sid, serial#, username, osuser FROM v$session where sid in(select session_id from v$locked_object);
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#.
如果session经常性的过期,不过几分种就过期,是因为你的程充中占用了太多的资源,超过了iis中应用配置的资源占用大小,iis中asp_iis进程进行自动重启,所以就session过期了,建议检查一下你的代码,是否占用cpu在某些程序代码里面很高,或者占用内存相当的高