Configuring non-raw multipath devices for Oracle Clusterware 11g (11.1.0, 11.2.0) on OL5/RHEL5 (Doc ID 605828.1)

Goal

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.

Solution

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