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SOA JVM Crash Io.netty.util.ThreadDeathWatcher$Watcher High Heap Retention, Coherence Is a Reason? (Doc ID 2747034.1)

Last updated on JANUARY 29, 2021

Applies to:

Oracle Coherence - Version 12.2.1.3.0 and later
Oracle SOA Suite - Version 12.2.1.3.0 and later
Information in this document applies to any platform.

Goal

Customer has reported that in Oracle SOA 12.2.1.3.x domain using latest Oct 2020 CPU across stack and noticing that after few days of JVM run, it crashes with heapdump. After analyzing using Eclipse MAT, io.netty.util.ThreadDeathWatcher$Watcher is holding high retention heap around 4-5GB in Old Gen. Suspecting that Coherence Cluster runtime could be contributing to it.

 

Solution

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In this Document
Goal
Solution


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