Configuring non-raw multipath devices for Oracle Clusterware 11g (11.1.0, 11.2.0) on OL5/RHEL5
Last updated on JANUARY 14, 2018
Applies to:Linux OS - Version 2.6.18-8 to 2.6.18-128
Linux Kernel - Version: 2.6.18-8 to 2.6.18-128
***Checked for relevance on 28-Jul-2011***
***Checked for relevance on 28-Nov-2013***
***Checked for relevance on 11-Nov-2016***
This article is intended for Oracle on Linux Database and System Administrators, specifically those intending to install (or migrate to) Oracle Real Application Clusters 11g Release 1/2 (11.1.0/11.2.0) on Oracle Linux 5 (OL5)/Red Hat Enterprise Linux 5 (RHEL5) using multipathed devices.
The article is not intended as a complete multipath reference.
Examples were taken from a working system with the following configuration, but should work for later versions:
- Enterprise Linux 5 (GA) - 2.6.18-8.el5
- Oracle Clusterware 11g Release 1 (11.1.0)
- Shared storage for Clusterware files served via iSCSI
From version 11gR1 (11.1.0), Oracle Clusterware no longer requires the use of raw devices as a means to access block devices for OCR and Voting disks - block devices may now be accessed directly. Raw devices may still optionally be used with Oracle11g Clusterware if preferred, in which case refer to <Note 465001.1> and <Note 564580.1> that describe the configuration of raw devices to singlepath and multipath Clusterware devices.
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