centOS+oracle11gR2的RAC安装

一.硬件及软件环境

操作系统：centOS

网络环境：节点1：192.168.1.31 私有地址：192.168.0.31 虚拟地址：192.168.1.28 节点2：192.168.1.32 私有地址：192.168.0.32 虚拟地址：192.168.1.19

scanip：192.168.1.200

二.安装操作系统及相关系统配置两节点

1.安装centOS操作系统,相关文档请看centOS安装手册.

2.磁盘分区一个节点

此处将共享盘分为成三个主分区便于后续的asm挂载,(使用fdisk /dev/sdb)分区完后,通过fdisk –l来进行查看.[注:分区只在一台服务器上面执行,另一台服务器执行partprob即可]

三.环境变量配置及内核修改

1. 为oracle用户设置密码两节点

Oracle1:~ # passwd oracle (oracle)

Changing password for oracle.

New Password:

Bad password: too simple

Reenter New Password:

Password changed.

2.修改/etc/hosts 两节点

192.168.1.31 oracle1 #hostname为须配上ip 192.168.1.32 oracle2 #hostname为须配上ip 192.168.0.31 oracle1-priv

192.168.0.32 oracle2-priv

192.168.1.28 oracle1-vip

192.168.1.19 oracle2-vip

192.168.1.200 cluster #此为scanip,11gR2新增的

3.修改内核参数两节点

在安装界面过程中，有一过程会提示检查内核参数失败，然后在/tmp目录下生成一个fixup.sh的脚本，届时运行该修复脚本进行自动修复便可

4. 修改.bash_profile建立用户环境变量两节点

ORACLE_BASE=/oracle_db

ORACLE_HOME=$ORACLE_BASE/product/11.2/db

#节点1为orcl1、节点2为orcl2

ORACLE_SID=orcl1/2

GRID_HOME=/oracle_crs/product/11.2/crs

export ORACLE_BASE ORACLE_HOME ORACLE_SID GRID_HOME

5.建立crs与db的安装目录，两节点

oracle1:~ # mkdir -p /oracle_crs/product/11.2/crs

oracle1:~ # chown -R root:oinstall /oracle_crs/

oracle1:~ # chmod -R 775 /oracle_crs/

oracle1:~ # mkdir -p /oracle_db/product/11.2/db

oracle1:~ # chown -R root:oinstall /oracle_db

oracle1:~ # chmod -R 775 /oracle_db

6 格式化asm磁盘

Oracle ASM 与Oracle 数据库紧密集成在一起，并与Oracle 的数据管理工具套件配合工作。它可以简化数据库存储管理，并提供原始磁盘I/O 的性能。

配置ASMLib。以root 用户身份在两个节点上配置ASMLib。两个节

oracle1:~ # /etc/init.d/oracleasm configure

Configuring the Oracle ASM library driver.

This will configure the on-boot properties of the Oracle ASM library

driver. The following questions will determine whether the driver is

loaded on boot and what permissions it will have. The current values

will be shown in brackets ('[]'). Hitting without typing an

answer will keep that current value. Ctrl-C will abort.

Default user to own the driver interface []: oracle

Default group to own the driver interface []: dba

Start Oracle ASM library driver on boot (y/n) [n]: y

Scan for Oracle ASM disks on boot (y/n) [y]: y

Writing Oracle ASM library driver configuration: done

Initializing the Oracle ASMLib driver: done

Scanning the system for Oracle ASMLib disks: done

oracle1:~ # /etc/init.d/oracleasm enable

Writing Oracle ASM library driver configuration: done

Initializing the Oracle ASMLib driver: done

Scanning the system for Oracle ASMLib disks: done

创建ASM 磁盘。以root 用户身份在任何一个节点上创建ASM 磁盘。

oracle1:~ # /etc/init.d/oracleasm createdisk CRS /dev/sdb1

Marking disk "CRS" as an ASM disk: done

oracle1:~ # /etc/init.d/oracleasm createdisk DATA /dev/sdb2

Marking disk "DATA" as an ASM disk: done

oracle1:~ # /etc/init.d/oracleasm createdisk FRA /dev/sdb3

Marking disk "FRA" as an ASM disk: done

oracle1:~ # /etc/init.d/oracleasm scandisks

Scanning the system for Oracle ASMLib disks: done

oracle1:~ # /etc/init.d/oracleasm 列出了oracleasm所有命令Usage: /etc/init.d/oracleasm {start|stop|restart|enable|disable|configure|createdisk|deletedisk|querydisk|listdisks|scandisks|status }

oracle1:~ # /etc/init.d/oracleasm listdisks

CRS

DA TA

FRA

在oracle2上执行

oracle2:~ # /etc/init.d/oracleasm enable

Writing Oracle ASM library driver configuration: done

Initializing the Oracle ASMLib driver: done