AMDU Utility For ASM

This utility from 11g can help to get ASM information and also can dump other information while asm instance is not running. For example you can get files from asm disk even  though asm is not running. To get help amdu -help. There is no official documentation available for this so careful while doing other than just querying.

When you give amdu without any parameter it will create one folder and inside that report.txt. Here is the sample output

******************************* AMDU Settings ********************************
ORACLE_HOME = /u01/app/oracle/product/11.2.0/grid
System name:    Linux
Node name:      taral.localdomain
Release:        2.6.32-100.20.1.el5
Version:        #1 SMP Fri Oct 1 16:37:36 EDT 2010
Machine:        x86_64
amdu run:       08-OCT-10 19:07:11
Endianess:      1
--------------------------------- Operations ---------------------------------
------------------------------- Disk Selection -------------------------------
-diskstring ''
------------------------------ Reading Control -------------------------------

------------------------------- Output Control -------------------------------
********************************* DISCOVERY **********************************
----------------------------- DISK REPORT N0001 ------------------------------
Disk Path: ORCL:ASMDISK1
Unique Disk ID:
Disk Label: ASMDISK1
Physical Sector Size: 512 bytes
Disk Size: 9773 megabytes
Group Name: ASMDATA
Disk Name: ASMDISK1
Failure Group Name: ASMDISK1
Disk Number: 0
Header Status: 3
Disk Creation Time: 2010/09/15 12:08:52.229000
Last Mount Time: 2010/10/08 17:26:26.671000
Compatibility Version: 0x0b200000(11020000)
Disk Sector Size: 512 bytes
Disk size in AUs: 9773 AUs
Group Redundancy: 2
Metadata Block Size: 4096 bytes
AU Size: 1048576 bytes
Stride: 113792 AUs
Group Creation Time: 2010/09/15 12:08:52.109000
File 1 Block 1 location: AU 2
OCR Present: NO
----------------------------- DISK REPORT N0002 ------------------------------
Disk Path: ORCL:ASMDISK2
Unique Disk ID:
Disk Label: ASMDISK2
Physical Sector Size: 512 bytes
Disk Size: 9773 megabytes
Group Name: ASMDATA
Disk Name: ASMDISK2
Failure Group Name: ASMDISK2
Disk Number: 1
Header Status: 3
Disk Creation Time: 2010/09/15 12:08:52.229000
Last Mount Time: 2010/10/08 17:26:26.671000
Compatibility Version: 0x0b200000(11020000)
Disk Sector Size: 512 bytes
Disk size in AUs: 9773 AUs
Group Redundancy: 2
Metadata Block Size: 4096 bytes
AU Size: 1048576 bytes
Stride: 113792 AUs
Group Creation Time: 2010/09/15 12:08:52.109000
File 1 Block 1 location: AU 2
OCR Present: NO
----------------------------- DISK REPORT N0003 ------------------------------
Disk Path: ORCL:ASMDISK3
Unique Disk ID:
Disk Label: ASMDISK3
Physical Sector Size: 512 bytes
Disk Size: 9773 megabytes
Group Name: ASMDATA
Disk Name: ASMDISK3
Failure Group Name: ASMDISK3
Disk Number: 2
Header Status: 3
Disk Creation Time: 2010/09/15 12:08:52.229000
Last Mount Time: 2010/10/08 17:26:26.671000
Compatibility Version: 0x0b200000(11020000)
Disk Sector Size: 512 bytes
Disk size in AUs: 9773 AUs
Group Redundancy: 2
Metadata Block Size: 4096 bytes
AU Size: 1048576 bytes
Stride: 113792 AUs
Group Creation Time: 2010/09/15 12:08:52.109000
File 1 Block 1 location: AU 2
OCR Present: NO
----------------------------- DISK REPORT N0004 ------------------------------
Disk Path: ORCL:ASMDISK4
Unique Disk ID:
Disk Label: ASMDISK4
Physical Sector Size: 512 bytes
Disk Size: 19539 megabytes
Group Name: DATA
Disk Name: ASMDISK4
Failure Group Name: ASMDISK4
Disk Number: 0
Header Status: 3
Disk Creation Time: 2010/09/15 12:34:10.144000
Last Mount Time: 2010/10/08 17:26:26.793000
Compatibility Version: 0x0b200000(11020000)
Disk Sector Size: 512 bytes
Disk size in AUs: 4884 AUs
Group Redundancy: 1
Metadata Block Size: 4096 bytes
AU Size: 4194304 bytes
Stride: 454272 AUs
Group Creation Time: 2010/09/15 12:34:09.836000
File 1 Block 1 location: AU 2
OCR Present: NO
******************************* END OF REPORT ********************************

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