oracle 10g amdu工具使用

前几天采用amdu工具为客户恢复过oracle 11g的一个数据库，后来仔细找了下资料，发现在10g上其实也可以使用该工具，但是需要自己安装

在ASM的OCR磁盘损坏后，数据库无法正常使用可以使用amdu将数据文件抽取出来，其实这个工具在10g也可以使用，不过需要配置安装才可以。，在10g的ASM中要使用AMDU工具，需要自行下载安装：

Linux X86 (Platform 46)	amdu_lnx_32.zip
Linux X86-64 AMD64/EM64T (Platform 226)	amdu_lnx_X86-64.zip
Solaris 10 Sparc 64bit (Platform 23)	amdu_solaris10_64.zip
Solaris 9 Sparc 64bit (Platform 23)	amdu_solaris9_64.zip
HP-UX PA-RISC 64bits (Platform 59)	amdu_HP-PARISC.zip
HP-UX Itanium (Platform 197)	amdu_hp_itanium.zip
AIX	amdu_aix.zip

分别下载三个工具后，直接上传到ORACLE 软件目录一个目录，解压即为安装，解压后的文件目录下会存在如下四个文件：

1. amdu -- amdu binary

2. libclntsh.so.11.1

3. libnnz11.so

4. libskgxp11.so

将如上的文件路径配加入环境变量即可

$cd <your directory>

$export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:`pwd`

or $setenv LD_LIBRARY_PATH ${LD_LIBRARY_PATH}:`pwd`

$export PATH=$PATH:`pwd`  or setenv PATH ${PATH}:`pwd`

这时候可以使用amdu查看任意asm磁盘的相关信息：

-bash-3.2$ ./amdu -diskstring '/dev/raw/raw3'

amdu_2012_02_26_19_00_17/

运行后默认会生成一个 命名方式为amdu_YYYY_MM_DD_HH24_MM_SS文件夹，如上可见

-bash-3.2$ cd amdu_2012_02_26_19_00_17/

-bash-3.2$ ls

report.txt

-bash-3.2$ more report.txt

-*-amdu-*-

******************************* AMDU Settings ********************************

ORACLE_HOME = /opt/rac/database

System name: Linux

Node name: primary

Release: 2.6.18-164.el5

Version: #1 SMP Tue Aug 18 15:51:54 EDT 2009

Machine: i686

amdu run: 26-FEB-12 19:00:17

Endianess: 1

--------------------------------- Operations ---------------------------------

------------------------------- Disk Selection -------------------------------

-diskstring '/dev/raw/raw3'

------------------------------ Reading Control -------------------------------

------------------------------- Output Control -------------------------------

********************************* DISCOVERY **********************************

----------------------------- DISK REPORT N0001 ------------------------------

Disk Path: /dev/raw/raw3

Unique Disk ID:

Disk Label:

Physical Sector Size: 512 bytes

Disk Size: 8032 megabytes

Group Name: DATA

Disk Name: DATA_0000

Failure Group Name: DATA_0000

Disk Number: 0

Header Status: 3

Disk Creation Time: 2011/01/21 17:47:28.754000

Last Mount Time: 2012/02/15 09:44:27.166000

Compatibility Version: 0x0a100000

Disk Sector Size: 512 bytes

Disk size in AUs: 8032 AUs

Group Redundancy: 1

Metadata Block Size: 4096 bytes

AU Size: 1048576 bytes

Stride: 113792 AUs

Group Creation Time: 2011/01/21 17:47:27.971000

File 1 Block 1 location: AU 2

******************************* END OF REPORT ********************************

导出DATA磁盘组的相关信息：

-bash-3.2$ ./amdu -diskstring '/dev/raw/raw*' -dump 'DATA'

amdu_2012_02_26_19_10_18/

这个时候会生成三个文件

DATA1_0001.img -- could be more than one. size is limited to 2gb.

DATA1.map

report.txt

如上三个文件分别是如下作用

1. report.txt

Like the name, it include details about the disks scanned (name, diskgroup name, failgroup name, size, creation time, etc).

2. *.map

For every diskgroup referenced on command -dump, will be a *.map file, which can be used to find the exact location of the ASM metadata on the disks. This file is a key component when reviewing specific areas of the metadata.

3. *.img

For each diskgroup, could be many image files. The size is limited to 2gb and will be a exact dump of the content of the diskgroup.