参考网站如下

https://help.fanruan.com/finereport/doc-view-304.html

若使用 Oracle 数据库，在定义数据连接时，将原来的 URL 改成：jdbc:oracle:thin:@(DESCRIPTION =(ADDRESS = (PROTOCOL = TCP)(HOST =IP1)(PORT = 1521))(ADDRESS = (PROTOCOL = TCP)(HOST =IP2)(PORT = 1521))(LOAD_BALANCE=yes)(CONNECT_DATA =(SERVER = DEDICATED)(SERVICE_NAME = 数据库名)))

示例1：在 192.168.100.168 和 192.168.100.170 机器上都拥有数据库名为 orcl10g，那么数据连接的 URL 就改成：jdbc:oracle:thin:@(DESCRIPTION =(ADDRESS = (PROTOCOL = TCP)(HOST =192.168.100.168)(PORT = 1521))(ADDRESS = (PROTOCOL = TCP)(HOST =192.168.100.170)(PORT = 1521))(LOAD_BALANCE=yes)(CONNECT_DATA =(SERVER = DEDICATED)(SERVICE_NAME = orcl10g)))即可。

如果是kettle连接报错，则不需要填写主机名称，端口号改成-1即可

示例2：在 env.finedevelop.com对应55602 端口拥有一个数据库 initfantlam，同时对应 55502 端口也拥有一个数据库 initfantlam，那么数据库连接的就改成： jdbc:oracle:thin:@(DESCRIPTION =(ADDRESS = (PROTOCOL = TCP)(HOST =env.finedevelop.com)(PORT = 55602))(ADDRESS = (PROTOCOL = TCP)(HOST =env.finedevelop.com)(PORT = 55502))(LOAD_BALANCE=yes)(CONNECT_DATA =(SERVER = DEDICATED)(SERVICE_NAME = initfantlam)))即可。