裸设备创建ASM磁盘

1、首先添加3块磁盘 2、安装包 [root@myorcl asm]# ls Oracleasm-2.6.18-348.6.1.el5-2.0.5-1.el5.i686.rpm oracleasm-2.6.18-34

1、首先添加3块磁盘

2、安装包

[root@myorcl asm]# ls

Oracleasm-2.6.18-348.6.1.el5-2.0.5-1.el5.i686.rpm

oracleasm-2.6.18-348.6.1.el5debug-2.0.5-1.el5.i686.rpm

oracleasm-2.6.18-348.6.1.el5PAE-2.0.5-1.el5.i686.rpm

oracleasm-2.6.18-348.6.1.el5xen-2.0.5-1.el5.i686.rpm

oracleasmlib-2.0.4-1.el5.i386.rpm

oracleasm-support-2.1.8-1.el5.i386.rpm

3、查看3块磁盘

[root@myorcl asm]# fdisk -l

Disk /dev/sdb: 21.4 GB, 21474836480 bytes

255 heads, 63 sectors/track, 2610 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Disk /dev/sdb doesn't contain a valid partition table

Disk /dev/sdc: 21.4 GB, 21474836480 bytes

255 heads, 63 sectors/track, 2610 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Disk /dev/sdc doesn't contain a valid partition table

Disk /dev/sdd: 21.4 GB, 21474836480 bytes

255 heads, 63 sectors/track, 2610 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Disk /dev/sdd doesn't contain a valid partition table

3、按照下面类似的方法创建分区

root@myorcl asm]# fdisk /dev/sdc

Device contains neither a valid DOS partition table, 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 2610.

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

eextended

pprimary partition (1-4)

p

Partition number (1-4): 1

First cylinder (1-2610, default 1):

Using default value 1

Last cylinder or +size or +sizeM or +sizeK (1-2610, default 2610):

Using default value 2610

Command (m for help): w

The partition table has been altered!

Calling ioctl() to re-read partition table.

Syncing disks.

[root@myorcl asm]# partprobe /dev/sdb

[root@myorcl asm]# partprobe /dev/sdc

[root@myorcl asm]# partprobe /dev/sdd

[root@myorcl asm]# vi /etc/udev/rules.d/60-raw.rules 添加

ACTION=="add",KERNEL=="sdb1",RUN+="/bin/raw /dev/raw/raw100 %N"

ACTION=="add",KERNEL=="sdc1",RUN+="/bin/raw /dev/raw/raw101 %N"

ACTION=="add",KERNEL=="sdd1",RUN+="/bin/raw /dev/raw/raw102 %N"

[root@myorcl asm]# vi /etc/udev/rules.d/90-raw.rules 添加

KERNEL=="raw10*",OWNER="oracle",GROUP="dba",MODE="0660"--已raw10*的设备属于oracle。

开启start_udev服务

[root@myorcl asm]# start_udev

Starting udev: [OK]

查看权限

[root@myorcl asm]# ll /dev/raw

total 0

crw-rw---- 1 oracle dba 162, 100 Jul5 07:43 raw100

crw-rw---- 1 oracle dba 162, 101 Jul5 07:43 raw101

crw-rw---- 1 oracle dba 162, 102 Jul5 07:43 raw102

4、添加集群就绪服务

[root@myorcl asm]# /u01/app/oracle/product/10.2.0/db_1/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.

myorcl

CSS is active on all nodes.

Oracle CSS service is installed and running under init(1M)

[root@myorcl asm]# oracleasm configure -i

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 []: oinstall

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

5、然后通过DBCA配置

[oracle@myorcl ~]$ dbca

选择配置ASM

就可以看到之前的裸设备

冗余机制有normal ：两个磁盘组，hight：三个磁盘组，external：外部冗余：一个磁盘组

然后完成，不配置其他选项

6、访问实例

[oracle@myorcl ~]$ export ORACLE_SID=+ASM

[oracle@myorcl ~]$ sqlplus / as sysdba

SQL*Plus: Release 10.2.0.1.0 - Production on Fri Jul 5 07:59:01 2013

Copyright (c) 1982, 2005, Oracle.All rights reserved.

Connected to:

Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Production

With the Partitioning, OLAP and Data Mining options

SQL> select instance_name from v$instance;

INSTANCE_NAME

------------------------------------------------

+ASM

查看ASM磁盘组

SQL> desc v$asm_diskgroup

NameNull?Type

----------------------------------------- -------- ----------------------------

GROUP_NUMBERNUMBER

NAMEVARCHAR2(30)

SECTOR_SIZENUMBER

BLOCK_SIZENUMBER

ALLOCATION_UNIT_SIZENUMBER

STATEVARCHAR2(11)

TYPEVARCHAR2(6)

TOTAL_MBNUMBER

FREE_MBNUMBER

REQUIRED_MIRROR_FREE_MBNUMBER

USABLE_FILE_MBNUMBER

OFFLINE_DISKSNUMBER

UNBALANCEDVARCHAR2(1)

COMPATIBILITYVARCHAR2(60)

DATABASE_COMPATIBILITYVARCHAR2(60)

7、查看数据库实例是否能够使用ASM磁盘组

[oracle@myorcl asm]$ export ORACLE_SID=orcl

[oracle@myorcl asm]$ sqlplus / as sysdba

SQL*Plus: Release 10.2.0.1.0 - Production on Fri Jul 5 08:03:07 2013

Copyright (c) 1982, 2005, Oracle.All rights reserved.

Connected to:

Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Production

With the Partitioning, OLAP and Data Mining options

SQL>

SQL>

SQL> select name from v$asm_diskgroup;

NAME

--------------------------------------------------------------------------------

DB

8、创建ASM实例数据库