oracle导出一条二进制数据（二进制,long只能通过dmp导出）

exp jxfoc/JXFOC@ORCL file=d:\dd.dmp tables=（jxfoc.FLIGHT_PLAN_MAKE_LOG,jxfoc.METAR_CONTENT_FOR_MAIL) query=\"where flight_no='HO1380' and flight_date=to_date('2015-3-22','yyyy-mm-dd') and dep='VTBS' and arr='ZSPD'\"