create database link xxx----即將建立的dblink名
connect to 數據庫用戶名 identified by "密碼"
using '(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = xxx.xxx.xxx.xx-----數據庫IP)(PORT = 1521))
)
(CONNECT_DATA =
(SERVICE_NAME = xxx----要連接的數據庫的SID)
)
)';