在執行sql的過程中可能會遇到阻塞的情況,這種情況下可能會等N久.所以.......

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 --會話
 select l.session_id,o.owner,o.object_name from v$locked_object l,dba_objects o where l.object_id=o.object_id
 
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 --會造成wait的會話
 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;

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 --結束指定會話
 alter system kill session '1258,34133';

如果是PLSQL：開啟plsql -> 工具 -> 會話 -> 找到對應會話,右鍵關閉即可