Oracle Coherence, Split-Brain, and Recovery Protocols In Detail
(Doc ID 1069429.1)
Last updated on SEPTEMBER 03, 2024
Applies to:
Oracle Coherence - Version 3.7.1.1 and later Oracle WebLogic Server - Version 10.3.6 and later Information in this document applies to any platform.
Goal
This document is a continuation of <Note 1069132.1> which provides a high-level conceptual overview of Split-Brain scenarios in distributed systems. This document will focus on a specific example of cluster communication failure and recovery in Oracle Coherence. This includes a discussion on the witness protocol (used to remove failed cluster members) and the panic protocol (used to resolve Split-Brain scenarios.)
Note that the removal of cluster members does not necessarily indicate a Split-Brain condition! Oracle Coherence does not (and cannot) detect a Split-Brain as it occurs; the condition is only detected when cluster members that previously lost contact with each other regain contact.
Solution
To view full details, sign in with your My Oracle Support account.
Don't have a My Oracle Support account? Click to get started!