oracle impdb table,Oracle中impdp的TABLE_EXISTS_ACTION参数
TABLE_EXISTS_ACTION={SKIP|APPEND|TRUNCATE|REPLACE}Thepossiblevalueshavethefollowingeffects:SKIPleavesthetableasisandmovesontothenextobject.ThisisnotavalidoptioniftheCONTENTparameterissettoDATA_ONLY.AP