oracle服务器没有建立目标数据库的TNS时，在客户端（有权限的情况下）建立dblink语法如下：

复制代码 代码如下:

create database link dblink_name connect to user_name identified by user_psw using

'(DESCRIPTION =

(ADDRESS_LIST =

(ADDRESS = (PROTOCOL = TCP)(HOST = xxx.xx.xxx.xx)(PORT = 1521))

)

(CONNECT_DATA =

(SERVICE_NAME = orcl)

)

)'