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

Last updated on MAY 01, 2018

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

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