Linux RH5平台下使用Oracle ASM创建数据库

Linux[/u] RH5平台下使用Oracle ASM创建数据库
实验[/u]环境
操作系统: linux 5.4
实验目标

Linux RH5平台下使用Oracle ASM创建数据库

实验步骤
一、安装[/u]配置先决条件
1.安装oracleasm支持包
创建asm数据库，首先需要ASMLib驱动程序包，可以从相关的网站下载到和操作系统对应的rpm文件，分别为oracleasm-support-2.0.3-1、oracleasm-2.6.18-8.el5-2.0.4-1.el5、oracleasmlib-2.0.3-1.el5。
# rpm -Uvh oracleasm*.rpm
# rpm -qa|grep oracleasm

oracleasm-support-2.0.3-1

oracleasm-2.6.18-8.el5-2.0.4-1.el5

oracleasmlib-2.0.3-1.el5
2.添加磁盘
关闭VMware，添加一块磁盘并格式化。
# fdisk /dev/sdb

Device contains neither a valid DOS partition table[/u], nor Sun, SGI or OSF disklabel

Building a new DOS disklabel. Changes will remain in memory only,

until you decide to write them. After that, of course, the previous

content won't be recoverable.
The number of cylinders for this disk is set to 1044.

There is nothing wrong with that, but this is larger than 1024,

and could in certain setups cause problems with:

1) software that runs at boot time (e.g., old versions of LILO)

2) booting and partitioning software from other OSs

(e.g., DOS FDISK, OS/2 FDISK)

Warning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite)
Command (m for help): n

Command action

e extended

p primary partition (1-4)

p

Partition number (1-4): 1

First cylinder (1-1044, default 1):

Using default value 1

Last cylinder or +size or +sizeM or +sizeK (1-1044, default 1044):

Using default value 1044
Command (m for help): w

The partition table has been altered!
Calling ioctl() to re-read partition table.

Syncing disks.

[root@server oracleasmlib]# fdisk -l
Disk /dev/sda: 17.1 GB, 17179869184 bytes

255 heads, 63 sectors/track, 2088 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System

/dev/sda1 * 1 13 104391 83 Linux

/dev/sda2 14 2088 16667437+ 8e Linux LVM
Disk /dev/sdb: 8589 MB, 8589934592 bytes

255 heads, 63 sectors/track, 1044 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System

/dev/sdb1 1 1044 8385898+ 83 Linux
3.启动rawdevices
# start_udev

Starting udev: [ OK ]
4.配置oracleasm
以root用户登陆，执行

# /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 <ENTER> 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) [y]:

Fix permissions of Oracle ASM disks on boot (y/n) [y]:

Writing Oracle ASM library driver configuration: [ OK ]

Loading module "oracleasm": [ OK ]

Mounting ASMlib driver filesystem: [ OK ]

Scanning system for ASM disks:

[ OK ]
# /etc/init.d/oracleasm createdisk VOL1 /dev/sdb1

Marking disk "/dev/sdb1" as an ASM disk: [ OK ]

#

[root@server oracleasmlib]# /etc/init.d/oracleasm listdisks

VOL1

[root@server oracleasmlib]# /etc/init.d/oracleasm scandisks

Scanning system for ASM disks:

[ OK ]
二、创建ASM实例
1.创建初始化文件
$ su – oracle

$ cd $ORACLE_HOME/dbs

$ vi init+ASM.ora
*.asm_diskstring='ORCL:VOL*'

*.background_dump_dest='/oracle/admin/+ASM/bdump'

*.core_dump_dest='/oracle/admin/+ASM/cdump'

*.instance_type='asm'

*.large_pool_size=12M

*.remote_login_passwordfile='SHARED'

*.user_dump_dest='/oracle/admin/+ASM/udump'
2.创建密码文件
$ su – oracle

$ cd $ORACLE_HOME/dbs

$ orapwd file=orapw+ASM password=dba
3． 创建目录结构

$ su – oracle

$ cd $ORACLE_HOME/dbs

$ mkdir –p $ORALCE_BASE/admin/+ASM/udump

$ mkdir –p $ORALCE_BASE/admin/+ASM/bdump

$ mkdir –p $ORALCE_BASE/admin/+ASM/cdump
4． 启动实例

$ export ORACLE_SID=+ASM

$ sqlplus / as sysdba

SQL> startup

ASM instance started
Total System Global Area 100663296 bytes

Fixed Size 777616 bytes

Variable Size 99885680 bytes

Database Buffers 0 bytes

Redo Buffers 0 bytes

ORA-15110: no diskgroups mounted
因为我们是首次启动asm实例，还没有创建diskgroup，所以显示15110错误是正常的。
如果启动实例的时候碰到如下报错：

ORA-29701: unable to connect to Cluster Manager

那么请检查/etc/inittab 文件，看看是否有下面这行

h1:35:respawn:/etc/init.d/init.cssd run >/dev/null 2>&1 </dev/null

如果没有请添加，如果被注释了请取消注释。

5.用dbca 创建实例数据 选择asm安装
途中需要执行这两个脚本
使用root用户来执行该脚本，分别执行/opt/app/oracle/oraInventory/orainstRoot.sh和/opt/app/oracle/product/10.2.0/db_1/root.sh