我的tnsname:
ORADB.US.YUELAIKEZHAN.COM =
  (DESCRIPTION =
    (ADDRESS_LIST =
      (ADDRESS = (PROTOCOL = TCP)(HOST = yuelaikezhan)(PORT = 1521))
    )
    (CONNECT_DATA =
      (SERVICE_NAME = oradb)
    )
  )
不管用不用域名都错误.error