查看锁表进程SQL语句

select * from v$session t1, v$locked_object t2 where t1.sid = t2.SESSION_ID; 

解锁

杀掉锁表进程： 
记录下SID和serial# ，分别替换掉下面的1155,39095，即可解除锁表

alter system kill session ‘1155,39095‘;