欢迎进入Oracle社区论坛，与200万技术人员互动交流 >>进入 我们在安装双机热备的数据库时，没必要在2台机器上都安装一次数据库，我们只需在一台数据库主机安装完成后，用rcp的方式把app下的所有文件复制到备机上。以下是主要的安装步骤： 1.在A机(10.203.1.1
欢迎进入Oracle社区论坛，与200万技术人员互动交流 >>进入
我们在安装双机热备的数据库时，没必要在2台机器上都安装一次数据库，我们只需在一台数据库主机安装完成后，用rcp的方式把app下的所有文件复制到备机上。以下是主要的安装步骤：
1.在A机(10.203.1.1 db_01)上调整主机内核参数，建立dba group和oracle用户，安装数据库软件，且仅安装数据库软件，create database我们后面可以手工的创建。注意此处建立oracle用户后，需要给oracle设置密码，不然之后做信任机制会有问题。
2.如果有需要版本升级，在安装完成数据库软件后，停lsnr、停dbsnmp，运行升级的runInstaller。由于之前我们没有建库，因此我们在此处也就不必运行$ORACLE_HOME/rdbms/admin/catpatch脚本。
3.在B机(10.203.1.2 db_02)上建立dba group和oracle用户，并且调整主机参数，注意由于需要建双机热备，因此需要保证gid和uid和A机上的一致。
4.在A机的/etc/hosts文件上添加：
10.203.1.2 db_02
在B机的/etc/hosts文件上添加：
10.203.1.1 db_01
5.建立信任机制，在A机的主目录建立.rhosts文件
db_02
在B机的主目录建立.rhosts文件
db_01
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