操作系统：Red Hat Enterprise Linux Server release 5.8
内核：2.6.18-308.el5

ASMLib：在oracle网站上下载同内核的ASMLib库

oracleasm-2.6.18-308.el5-2.0.5-1.el5.i686.rpm    
oracleasm-2.6.18-308.el5PAE-2.0.5-1.el5.i686.rpm 
oracleasm-2.6.18-308.el5xen-2.0.5-1.el5.i686.rpm 
oracleasmlib-2.0.4-1.el5.i386.rpm
oracleasm-support-2.1.7-1.el5.i386.rpm   

1，安装ASMLib

[root@rhel5 ASMLib]# rpm -ivh *.rpm
warning: oracleasm-2.6.18-308.el5-2.0.5-1.el5.i686.rpm: Header V3 DSA signature: NOKEY, key ID 1e5e0159
Preparing...                #############################[100%]
   1:oracleasm-support      ##########################  [ 20%]
   2:oracleasm-2.6.18-308.el#########################  [ 40%]
   3:oracleasm-2.6.18-308.el#########################  [ 60%]
   4:oracleasm-2.6.18-308.el#########################  [ 80%]
   5:oracleasmlib           ###########################   [100%]

安装的时候可能需要kernel-PAE = 2.6.18-308.el5 和 kernel-xen = 2.6.18-308.el5 两个包，在操作系统中查找并安装

[root@rhel5 Server]# rpm -ivh kernel-PAE-2.6.18-308.el5.i686.rpm  kernel-PAE-devel-2.6.18-308.el5.i686.rpm  kernel-xen-2.6.18-308.el5.i686.rpm  kernel-xen-devel-2.6.18-308.el5.i686.rpm
Preparing...                ############################ [100%]

   1:kernel-xen-devel       ##########################  [ 25%]
   2:kernel-PAE             ###########################  [ 50%]
   3:kernel-PAE-devel       ##########################  [ 75%]
   4:kernel-xen             ###########################  [100%]

2，配置css服务

以root身份运行localconfig脚本

[root@rhel5 bin]# cd $ORACLE_HOME/bin
[root@rhel5 bin]# ./localconfig add
/etc/oracle does not exist. Creating it now.
Successfully accumulated necessary OCR keys.
Creating OCR keys for user 'root', privgrp 'root'..
Operation successful.
Configuration for local CSS has been initialized

Adding to inittab 
Startup will be queued to init within 90 seconds.
Checking the status of new Oracle init process...
Expecting the CRS daemons to be up within 600 seconds.
CSS is active on these nodes.
        rhel5
CSS is active on all nodes.
Oracle CSS service is installed and running under init(1M)

3，创建设备（祼设备或者未格式化的设备）

以下以/dev/sdc的分区为例，划分了4个分区，大小均一致

Disk /dev/sdc: 21.4 GB, 21474836480 bytes
255 heads, 63 sectors/track, 2610 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

   Device Boot      Start         End      Blocks   Id  System
/dev/sdc1               1         600     4819468+  83  Linux
/dev/sdc2             601        1200     4819500   83  Linux
/dev/sdc3            1201        1800     4819500   83  Linux
/dev/sdc4            1801        2400     4819500   83  Linux

修改属主为oracle

[root@rhel5 ~]# cd /dev/

[root@rhel5 dev]# ls -al sdc*
brw-r----- 1 oracle dba 8, 32 Apr 28 01:54 sdc
brw-r----- 1 oracle dba 8, 33 Apr 28 03:41 sdc1
brw-r----- 1 oracle dba 8, 34 Apr 28 03:41 sdc2
brw-r----- 1 oracle dba 8, 35 Apr 28 03:41 sdc3
brw-r----- 1 oracle dba 8, 36 Apr 28 03:41 sdc4

4，图形化界面配置ASM

使用oracle用户，图形化界面方式 dbca 开启，选择 配置ASM

设置ASM实例SYS用户密码，参数保持默认

创建一个新的Disk Group，名称为ora10g，Redundancy使用Normal即可（可用性），Disk Discovery Path增加刚创建的分区（/dev/sdc1,/dev/sdc2,/dev/sdc3,/dev/sdc4），完成后即创建完成，并自动mount。