In this Document

Applies to:

Information in this document applies to any platform.
This note applies to the following versions of these products:

Oracle Automatic Storage Management Version 10.1 to 11.2

Purpose

This Master Note is intended to provide an index and references to the most frequently used My Oracle Support Notes with respect to Operating System (OS) Administration of Oracle Automatic Storage Management (ASM) environments. This Master Note is subdivided into categories to allow for easy access and reference to notes that are applicable to specific platforms.
This includes the following categories:

All Platforms
General Operating System (OS) Requirements
Issues
Automatic Storage Management (ASM) Configuration
Storage Multipathing

Linux x86-64
Issues
Automatic Storage Management (ASM) Configuration
ASMLIB/Multipathing
Issues
ASMLIB/Multipathing Configuration

Solaris
Issues
Automatic Storage Management (ASM) Configuration
Multipathing

HP-UX
Issues

IBM AIX
Issues
Multipathing

Microsoft Windows
Issues
Automatic Storage Management (ASM) Configuration
Multipathing

IBM Linux on Z
Issues
Automatic Storage Management (ASM) Configuration

Scope

This document is intended for Operating System (OS) Administrators who administer storage devices for Oracle Automatic Storage Management (ASM).
Before reading this article, the user must have a good understanding of their Operating System (OS).

Master Note For Automatic Storage Management (ASM) For Operating System (OS) Administrators

All Platforms

General Operating System (OS) Requirements:

Note: Keeping the Operating System (OS) kernel current helps stabilize the system. Production systems should never run an out dated Operating System (OS) kernel version. As a best practice, Oracle recommends the Operating System (OS) kernel version be maintained to within 6 months of current. Please contact the Operating System (OS) vendor directly for more information, risk exposure, and patching recommendations.

Oracle Database on Unix AIX,HP-UX,Linux,Mac OS X,Solaris,Tru64 Unix Operating Systems Installation and Configuration Requirements Quick Reference (8.0.5 to 11.2) (Doc ID 169706.1)

Issues:

Receiving errors when creating new diskgroup in ASM - ORA-15018 and ORA-15099 (Doc ID 1057333.1)
Bug 6453944 - ORA-15196 with ASM disks larger than 2TB (Doc ID 6453944.8)
ASM Devices Are Still Held Open After Dismount or Drop (Doc ID 402526.1)
ASM Failed to Start as ASMCA Reported ORA-00838 ORA-01078 (Doc ID 1086706.1)
Ora-15063: Asm Discovered An Insufficient Number Of Disks For Diskgroup using NetApp Storage (Doc ID 577526.1)
ASM disk group mount fails with ORA-15036: disk is truncated (Doc ID 1077175.1)
Diagnosing Disk not getting discovered in ASM (Doc ID 311926.1)
TROUBLESHOOTING - ASM disk not found/visible/discovered issues (Doc ID 452770.1)
Database Instance Crashes If ASM Failgroup Is Overwritten By /dev/zero (Doc ID 848147.1)
Bug 7243560 - High "db file sequential read" IO times when using ASM (Doc ID 7243560.8)
ASMCA/Grid Installation Is Hanging With The KFOD-00311 Error. (Doc ID 1217643.1)

Automatic Storage Management (ASM) Configuration:

Note: Performance problems could occur on diskgroups having disks with an uneven size. Oracle recommends having disks with a uniform. size and same physical characteristics (same vendor, same model, same speed, etc.), to guarantee ASM rebalance operation works as expected and to provide a good throughput. Disks in a given diskgroup should have similar size and performance characteristics. ASM load balances file activity by uniformly distributing file extents across all disks in a diskgroup. For this technique to be effective it is important that the disks used in a disk group be of similar performance characteristics.

ASM Technical Best Practices (Doc ID 265633.1)
How to Prepare Storage for ASM (Doc ID 452924.1)
ASM - Scalability and Limits (Doc ID 370921.1)
Placeholder for AMDU binaries and using with ASM 10g (Doc ID 553639.1)
ASMIOSTAT Script. to collect iostats for ASM disks (Doc ID 437996.1)
How does ASM work with RAID where striping and mirroring are already built-in? (Doc ID 330398.1)
Does ASM Survive Change Of Disc Path? (Doc ID 466231.1)
ISCSI Disk Discovery for Openfiler Using iscsiadm (Doc ID 468466.1)
ACFS: How To Unmount/Dismount An ACFS Filesystem? (Doc ID 1224283.1)
Mount Options for Oracle files when used with NAS devices (Doc ID 359515.1)

Storage Multipathing:

Note: Oracle Corporation does not certify or qualify multipathing tools. Although Oracle Automatic Storage Management (ASM) does not provide multipathing capabilities, Oracle Automatic Storage Management (ASM) does leverage multipathing tools, as long as the path or device produces a successful return code from an fstat system call.

Oracle ASM and Multi-Pathing Technologies (Doc ID 294869.1)

Linux x86-64

Issues:

ASM REACTING TO PARTITION ERRORS (Doc ID 1062954.1)
Storage Drive Errors and /proc/partitions (Doc ID 415654.1)
Raw Devices Are Not Visible Through ASM. (Doc ID 743596.1)
No fdisk Output on the RHEL4/EL4 up to Update 5 included Paravirtualized Guest Domain (Doc ID 468182.1)

Automatic Storage Management (ASM) Configuration:

ASM: Oracle 11g ASM Installation On LINUX. (Doc ID 788267.1)
How to resize a physical disk or LUN and an ASM DISKGROUP (Doc ID 311619.1)
How to Dynamically Add and Remove SCSI Devices on Linux (Doc ID 603868.1)
Using Openfiler iSCSI with an Oracle RAC database on Linux (Doc ID 371434.1)
Linux 2.6 Kernel Deprecation of Raw Devices (Doc ID 357492.1)

ASMLIB/Multipathing

Note: Additional needed information for Linux Platforms, if ASMLIB is being used.

Note: For RHEL6, Oracle will only provide ASMLib software and updates when configured with a kernel distributed by Oracle. Oracle will not provide ASMLib packages for kernels distributed by Red Hat as part of RHEL6...ASMLib usage will require replacing any Red Hat kernel with a kernel provided by Oracle.