首先要用dba权限的用户登录
SELECT l.session_id sid,
s.serial#,
l.locked_mode,
l.oracle_username,
l.os_user_name,
s.machine,
s.terminal,
o.object_name,
s.logon_time
FROM v$locked_object l, all_objects o, v$session s
WHERE l.object_id = o.object_id
AND l.session_id = s.sid
ORDER BY sid, s.serial#;
然后kill掉系统锁定的此记录,其中SID和serial#为上一条sql查询出的第一个和第二个字段
ALTER system KILL session 'SID,serial#';
Q.E.D.