E:\oracle\product\10.2.0\client_1\NETWORK\ADMIN 下面有两个文件tnsnames.ora和listener.ora，修改tnsnames.ora文件，加入：billingdev2 =
  (DESCRIPTION =
   (ADDRESS_LIST =
    (ADDRESS = (PROTOCOL = TCP)(HOST = 172.16.9.116)(PORT = 1522))
   )
  (CONNECT_DATA =
   (SERVER = DEDICATED)
   (SERVICE_NAME = billingdev2 )
  )
 )