Troubleshooting guide for an issue on Federating Caches across the clusters in the Oracle coherence 12.2.1.x.x versions. (Doc ID 2405456.1)

Last updated on NOVEMBER 21, 2023

Applies to:

Purpose

The federated caching feature federates cache data asynchronously across multiple geographically dispersed clusters. Cached data is federated across clusters to provide redundancy, off-site backup, and multiple points of access for application users in different geographical locations.

The users usually face different configuration issues in implementing the different Federation Topologies those are available out-of-the-box.

Federated caching provides applications with the ability to accept, reject, or modify cache entries being stored locally or remotely. In a concurrent cache accessing there are possible conflicts between the federation clusters.

An operational override file is used to configure federation participants and the federation topology. A cache configuration file is used to create federated caches schemes. A federated cache is a type of partitioned cache service and is managed by a federated cache service instance. Sub-optimal Federation Configuration could lead to unexpected runtime errors or performance degradation.

Federation MBeans make it easy to perform administrative operations, such as starting and stopping federation and to monitor federation configuration and performance statistics. However, how to monitor and interpret the runtime values to maintain stable federated clusters.

The users look for better explanation on the available JMX reporting that can help to resolve possible resource and performance issues.

As said above this document is to help the customers to better and optimize the federated clusters configuration in the LAN or across the LANs geographically. Interpreting the specific errors or warnings due to the issues in the environment- network or OS or JVM. It helps on how to collect the additional data required for specific error scenarios.

Troubleshooting Steps

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