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   ֮ǰ¾É·½·¨ÊÇʹÓà alter session set events ..  »òÕßʹÓÃdbms_system.set_ev·½Ê½
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    »á »° ¼¶:exec dbms_monitor.session_trace_enable(session_id =>1574,
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         exec dbms_monitor.session_trace_disable(session_id=>1574,serial_num=>36749)
    ¿Í»§¶Ë¼¶:exec dbms_monitor.cliend_id_trace_enable(
                                 client_id=''JXXXT:Administrator',
                                 waits =>true,binds=>false)
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