Coherence Cluster Transport Service tmb:// Connection Migrations are Freezing the Cluster

(Doc ID 2388287.1)

Last updated on APRIL 25, 2018

Applies to:

Oracle Coherence - Version 12.2.1.0.0 and later
Information in this document applies to any platform.

Symptoms

A customer is on a coherence cluster configured using version 12.2.1.0.6. This cluster is with the JVMs of heap size great than 20 GB and experiences significant GC pauses sometimes at run time. Intermittently such long GC pauses are leading to a tmb:// connection failures and there after migration is triggering. Until it is good and working as expected but the migrated connections are not being succeeded. At later stages in the cluster tmb:// migration calls are growing and the members in the cluster scrawling/freezing to process the requests. The communication delays in the cluster are reported very high as follows.

Ex:

 

Cause

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