用DBA用户登陆：

1、查看锁

SELECT p.spid, a.serial#, c.object_name, b.session_id, b.oracle_username,
?????? b.os_user_name
? FROM v$process p, v$session a, v$locked_object b, all_objects c
WHERE p.addr = a.paddr AND a.process = b.process
?????? AND c.object_id = b.object_id
??????
2. 查看是哪个进程锁的
SELECT sid, serial#, username, osuser FROM v$session? where osuser = 'tangpj'

3. 杀掉这个进程? alter system kill session 'sid,serial#';