oracle数据库建立dblink

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:

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)
    )
  )'

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