Split Brain Condition: Cluster Members Have Different Output from Opmnctl Status (Doc ID 430418.1)

Last updated on NOVEMBER 04, 2016

Applies to:

Oracle Fusion Middleware - Version: 10.1.3.0.0 to 10.1.3.5.0 - Release: AS10gR3 to AS10gR3
Information in this document applies to any platform.
Oracle Application Server 10g Enterprise Edition - Version: 10.1.3.0 to 10.1.3.5

***Checked for relevance on 05-May-2010***

Symptoms

One simple definition of the "split-brain" condition is a condition whereby two or more instances of the same cluster are running. A split-brain condition would allow each cluster instance to access cluster resources without knowledge of the other cluster instance, resulting in corrupted cluster integrity.

In this specific scenario a split brain situation has arisen in a two-node cluster.  Node two shows a different list of components than node one.  This is shown by running opmnctl status on both nodes and comparing the results.

Cause

Sign In with your My Oracle Support account

Don't have a My Oracle Support account? Click to get started

My Oracle Support provides customers with access to over a
Million Knowledge Articles and hundreds of Community platforms