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Excessive Native Memory Usage in the WAS Java Proxy or WAS Java On Demand Router

Troubleshooting


Problem

The WebSphere Application Server Java Proxy and Java On Demand Router use an asynchronous thread to write log entries to files such as the proxy.log to improve request/response performance. If there is a disk or network filesystem issue, log entries asynchronously queued in native memory may accumulate and consume excessive native memory.

Symptom

Native OutOfMemoryError (OOM) on 32-bit or exhausted physical memory and paging on 64-bit.

[{"Product":{"code":"SSEQTP","label":"WebSphere Application Server"},"Business Unit":{"code":"BU048","label":"IBM Software"},"Component":"Proxy server","Platform":[{"code":"PF002","label":"AIX"},{"code":"PF010","label":"HP-UX"},{"code":"PF012","label":"IBM i"},{"code":"PF016","label":"Linux"},{"code":"PF027","label":"Solaris"},{"code":"PF033","label":"Windows"}],"Version":"8.5.5;8.5;8.0;7.0","Edition":"","Line of Business":{"code":"LOB77","label":"Automation Platform"}}]

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Document Information

Modified date:
03 March 2025

UID

swg21690814