解决"oracle资源正忙,请指定NOWAIT..."

查看锁：
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;

KILL锁：
alter system kill session 'sid,serial#';
例：alter system kill session '122,23574';