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     from v$session t1 , v$locked_object t2
     where t1.sid = t2.session_id
     order by t1.logon_time
2. ͨ¹ýalter system kill session 'sid, serial#'°Ñsession killµô
     alter system kill session '6,8'


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(
  ID   INTEGER,
  NAME VARCHAR2(10)
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on commit preserve rows;
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insert into tmpa select 1,'aa' from dual;
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