1、找到sid,serial#；
SELECT /*+ rule */ s.username, l.type,
decode(l.type,'TM','TABLE LOCK',
'TX','ROW LOCK',
NULL) LOCK_LEVEL,
o.owner,o.object_name,o.object_type,
s.sid,s.serial#,s.terminal,s.machine,s.program,s.osuser,s.status
FROM v$session s,v$lock l,dba_objects o
WHERE l.sid = s.sid
AND l.id1 = o.object_id(+)
AND s.username is NOT NULL order by l.type;
2、根据找到的sid,serial#，执行以下语句，清除进程。
alter system kill session '~sid~,~serial#~';
例如： alter system kill session '14,4820';