查询锁定的库

最好使用 sys as sysdba登录，防止无权限

SELECT
    sess.sid,
    sess.serial#,
    lo.oracle_username,
    lo.os_user_name,
    ao.object_name,
    lo.locked_mode
FROM
    v$locked_object   lo,
    dba_objects       ao,
    v$session         sess
WHERE
    ao.object_id = lo.object_id
    AND lo.session_id = sess.sid;

解锁数据库

alter system kill session '137,36105'; 
# 后面的数字为  sid,serial#  两个查询结果