DB_link

  1）    create database link 你是用的庫名  connect to 需要連接的庫名 identified by CUSTOMER
  using 'icbccsdb';

 

2）-- Create database link
create   database    link   CIFDBLINK
  connect    to    CIF i  dentified  by   CIF
  using '(DESCRIPTION =(ADDRESS = (PROTOCOL = TCP)(HOST = 192.0.0.1)(PORT = 1521))(CONNECT_DATA =(SERVER = DEDICATED)(SERVICE_NAME = iccsdb)))';