Coherence Member Crashes Throwing Java.Lang.OutOfMemoryError: Direct Buffer Memory (Doc ID 1465171.1)

Last updated on DECEMBER 19, 2016

Applies to:

Oracle Coherence - Version 3.7.1 and later
Information in this document applies to any platform.

Symptoms

In a Standalone Coherence Cluster or FMW WebLogic Domains coherence process is getting stopped/ejected from the coherence cluster due to java.lang.OutOfMemoryError: Direct buffer memory error.

Changes

Coherence does use byte buffers. In this case coherence member was Out Of JVM Heap Space and failed to create (Direct/off-heap) NIO byte buffer. Coherence proxy members' TCP connection acceptor failed to process requests because it could not create/allocate buffer pool required. That was the reason for the coherence proxy member got stopped its TCPAcceptor service - due to unhandled exception: jjava.lang.OutOfMemoryError: Direct buffer memory.

Cause

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