1、概述和说明
1.1、概述
本文档用于详细记录在OEL6.3X86_64位系统上安装配置Oracle 11gR2(11.2.0.4.0)RAC的步骤、RAC数据库的基本维护、为RAC创建单实例Active Physical DataGuard、验证Active DataGuard的功能、RAC主库同单实例物理备库的角色转换等内容。
安装平台选择Oracle公司的Virtual Box虚拟机软件，通过在该虚拟机上配置两台OEL6.3 X86_64位Linux系统的机器，然后在这两台机器上配置Oracle11gR2RAC系统。其中
禁用selinux (将配置文件中SELINUX=enforcing修改为SELINUX=disabled) (注意：双节点都要执行)
[root@BJRAC ~]# more /etc/selinux/config # This file controls the state of SELinux on the system. # SELINUX= can take one of these three values: # enforcing - SELinux security policy is enforced. # permissive - SELinux prints warnings instead of enforcing. # disabled - No SELinux policy is loaded. SELINUX=enforcing # SELINUXTYPE= can take one of these two values: # targeted - Targeted processes are protected, # mls - Multi Level Security protection. SELINUXTYPE=targeted