本例是基于asmlib创建, 也可以基于裸设备创建.1.安装asm所需要的支持包a.在oracle网站下载支持包：这里b.根据linux内核下载相应的
本例是基于asmlib创建, 也可以基于裸设备创建.
1.安装asm所需要的支持包
a.在oracle网站下载支持包：这里
b.根据linux内核下载相应的asm安装包:
oracleasm-2.6.18-8.el5-2.0.4-1.el5.i686.rpm
oracleasm-2.6.18-8.el5pae-2.0.4-1.el5.i686.rpm
oracleasm-2.6.18-8.el5xen-2.0.4-1.el5.i686.rpm
oracleasmlib-2.0.3-1.el5.i386.rpm
oracleasm-support-2.0.4-1.el5.i386.rpm
c.安装 rpm -uvh .......... --nodeps
1.1 安装asmlib# cd /orahome/wangnc/asmlib
# rpm -uvh oracleasm-support-2.1.3-1.el4.i386.rpm oracleasm-2.6.9-55.elsmp-2.0.3-1.i686.rpm oracleasmlib-2.0.4-1.el4.i386.rpm
1.2 配置asmlib# /etc/init.d/oracleasm configure
...
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
...
# df -ha | grep oracleasm
oracleasmfs               0      0      0    -   /dev/oracleasm
附启用或禁用oracleasm自动启动方法:
# /etc/init.d/oracleasm disable
# /etc/init.d/oracleasm enable
1.3 物理磁盘分区# fdisk -l | grep disk
disk /dev/sda: 250.0 gb, 250059350016 bytes
disk /dev/sdb: 250.0 gb, 250059350016 bytes
command (m for help): n
p
partition number (1-4): 1
# fdisk -l /dev/sdb
disk /dev/sdb: 250.0 gb, 250059350016 bytes
255 heads, 63 sectors/track, 30401 cylinders
units = cylinders of 16065 * 512 = 8225280 bytes
    device boot       start          end       blocks    id   system
/dev/sdb1                1        30401    244196001    83   linux
1.4 创建asm磁盘这些磁盘是不包含任何内容的空磁盘, 创建时物理磁盘要带分区号如sdb1.
asm磁盘名可以为大写字母,数字和下划线, 且以字母开始:
# /etc/init.d/oracleasm createdisk vol1 /dev/sdb1
marking disk vol1 as an asm disk:                        [   ok   ]
如果提示failed, 可以跟踪日志:
# tail -f /var/log/oracleasm
附删除磁盘语句:
# /etc/init.d/oracleasm deletedisk vol1
检查配置情况:
# /etc/init.d/oracleasm querydisk vol1
# /etc/init.d/oracleasm querydisk /dev/sdb1
# /etc/init.d/oracleasm listdisks
# ls -l /dev/oracleasm/disks/*
# /etc/init.d/oracleasm status
1.5 建初始化参数文件注意asm_diskstring必需配置成'orcl:'开头.
# su - oracle
$ export oracle_sid=+asm
asm_diskstring='orcl:vol*'
background_dump_dest='/u01/app/oracle/admin/+asm/bdump'
core_dump_dest='/u01/app/oracle/admin/+asm/cdump'
user_dump_dest='/u01/app/oracle/admin/+asm/udump'
instance_type='asm'
large_pool_size=12m
remote_login_passwordfile='shared'
，