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Placeholder for AMDU binaries and using with ASM 10g, 11g, 12c (Doc ID 553639.1)

Last updated on OCTOBER 11, 2023

Applies to:

Oracle Database - Enterprise Edition - Version to [Release 10.1 to 12.2]
Information in this document applies to any platform.
Oracle Server Enterprise Edition - Version: to


On Oracle 10g the content of a diskgroup can be reviewed if the diskgroup is mounted and there are internal views that display the specific allocation of the files (ASM files and Database files) inside of the disks.

When the diskgroup is not mounted, this information is not available, which makes difficult to diagnose the errors avoiding the diskgroup to be mounted.   This problem has been resolved with AMDU.

is a tool introduced in 11g where it is posible to extract all the available metadata from one or more ASM disks, generate formatted block printouts from the dump output, extract one or more files from a diskgroup (mounted/unmounted) and write them to the OS file system.

This tool is very important when dealing with internal errors related to the ASM metadata. 

Although this tool was released with 11g, it can be used with ASM 10g.

This document provides the links to download the files required to run AMDU with an ASM 10g environment.

Linux X86 (Platform 46)
Linux X86-64 AMD64/EM64T (Platform 226)
Solaris 10 Sparc 64bit (Platform 23)
Solaris 9 Sparc 64bit (Platform 23)
HP-UX PA-RISC 64bits (Platform 59)
HP-UX Itanium (Platform 197)

* Additional platforms will be added

Table 1.  List of platforms

The scope of this document is not to explain AMDU usability and characteristics.  The main goal is to provide a placeholder where AMDU can be downloaded and use on Oracle 10g environments.  For Oracle 11g, this tool is part of the distribution and will be present on the $ORACLE_HOME/bin directory.




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