Oracle 执行简单的更新插入语句，执行一直持续，无法成功

搞了百度一下才知道，原来是表锁住了！

查出哪些对象被锁：

select a.*,b.* from v$locked_object a,dba_objects b where b.object_id = a.object_id
查出锁住对象的session ID 和serial#：

select t2.username,t2.sid,t2.serial#,t2.logon_time
from v$locked_object t1,v$session t2
where t1.session_id=t2.sid order by t2.logon_time
杀死session：
alter system kill session 'ID,Serial#'