how about SQL*Net message from client
I just delete some records from the tmp table(8000rows).
SIDSEQ#EVENTP1TEXTP1P1RAWP2TEXTP2P2RAWP3TEXTP3P3RAWWAIT_CLASS_IDWAIT_CLASS#WAIT_CLASSWAIT_TIMESECONDS_IN_WAITSTATEWAIT_TIME_MICROTIME_REMAINING_MICROTIME_SINCE_LAST_WAIT_MICRO17331467SQL*Net message from clientdriver id1.414E+090000000054435000#bytes1000000000000000100027231689086Idle032WAITING31554697-10