今天碰到一个问题,有一张表不能操作,很可能是被锁了,首先想到的是kill session,于是执行了下列的脚本找到是哪个session有问题:
查看表是否被锁
SELECT /*+ rule*/
a.sid, b.owner, object_name, object_type
FROM v$lock a, all_objects b
WHERE TYPE = 'TM'
and a.id1 = b.object_id;
根据上面查询出的sid,找出对应的serial#:
SELECT sid,serial# FROM v$session WHERE sid = &sid;
发现有一个会话有锁sid 197,serial# 17,于是执行alter system kill session ‘197,17’;大概等了30s中,pl/sql developer报出一个错误:ora-00031:标记要终止的会话。
百度了一下解决方法,是在OS级别kill掉;但是纠结了很久,不知道kill掉哪个进程;最终还是使用了最笨的方法重启了数据库,解决了问题;
后来还找到了这样的解决方案:查出session的spid
select spid, osuser, s.program from v$session s, v$process p where s.paddr = p.addr and s.sid =197;
1. 在linux上, kill -9 12345
2. 在
windows上,C:\Documents and Settings\gg>orakill orcl 12345
orcl:表示要杀死的进程属于的实例名
12345:是要杀掉的线程号
ORA-00031: session marked for kill
Cause: The session specified in an ALTER SYSTEM KILL SESSION command cannot bekilled immediately (because it is rolling back or blocked on a networkoperation), but it has been marked for kill. This means it will be killed as soonas possible after its current uninterruptible operation is done.
Action: No action is required for the session to be killed, but further executionsof the ALTER SYSTEM KILL SESSION command on this session may cause the sessionto be killed sooner.