在有些情况下，如数据库服务器处于磁盘空间的压力或成本控制需要将数据文件备份到异机，使用RMAN可以完成该工作。基于Windows平台
在有些情况下，如数据库服务器处于磁盘空间的压力或成本控制需要将数据文件备份到异机，使用RMAN可以完成该工作。基于Windows平台所需完成的配置相对简单，仅仅是添加账户与使用新增的帐户来启动数据库服务以及设置共享路径。
下面给出具体描述。
一、配置数据库服务器与备份目的主机
1. 帐户配置(假定有主机A,B 且A为数据库服务器，B为备份目的主机，且能互相ping通)
如果主机A与主机B使用的Administrator密码相同，且A上的OracleServiceDBNAME服务和OracleOraHome92TNSListener服务都以"本
地系统账户登陆"
如果主机A与主机B使用不同的Administrator密码，处于安全考虑不宜设为相同，则则可以分别在主机A与主机B上新建一用户，假
定在主机A上建立DBA_oracle，密码为ORA_PWD，则在主机B上也建立该用户(用户名可以不同，密码必须相同)，密码同样设置为ORA_PWD
。将刚建好的用户在各自主机将其加入到Aministrators组
2. 设定OracleServiceDBNAME服务和OracleOraHome92TNSListener服务的启动帐户。在运行处输入services.msc。在主机A上设定使用此帐
户登陆，即使用刚刚建立的DBA_oracle，，输入密码启动，该设置需要重启后有效
3. 在主机B上设定共享文件夹，如RMAN_Shared，设置其权限为完全控制(在A上使用\\IP\RMAN_Shared测试是否可写入文件)
二、查看RMAN的配置与数据库情况
使用备份脚本对数据库进行备份，备份脚本在最后给出
1.关闭数据库 2.删除system01.dbf数据文件以便测试恢复
SQL> ho del D:\oracle\oradata\testHH\SYSTEM01.DBF
3.重启实例，收到错误提示 4.使用RMAN进行还原与恢复 5.结论从上面的备份与恢复来看，使用异机备份与恢复与使用本地服务器备份与恢复操作方式并无太多差异，但数据库的性能则受到一定
的影响。即备份到异机其备份与恢复速度低于备份恢复在本地服务器。在大型生产环境中且实时性要求特高的情形，尽可能的避免异机
备份与恢复。尽管如此，备份到异机与从异机恢复仍然不失为一种可选方案。
五、RMAN 备份脚本
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