kettle设计器连接oracle RAC时的连接字符串

1、不需要填写主机名
2、数据库名写如下连接字符串：
(DESCRIPTION =(ADDRESS = (PROTOCOL = TCP)(HOST = IP地址)(PORT = 1521))(CONNECT_DATA = (SERVER = DEDICATED)(SERVICE_NAME = 服务名)))
3、端口号写：-1