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What is causing java.lang.OutOfMemoryError: Unable to create new native thread (Doc ID 2232666.1)

Last updated on MARCH 28, 2025

Applies to:

Oracle WebLogic Server - Version 10.3.6 and later
Information in this document applies to any platform.

Goal

You can encounter the "java.lang.OutOfMemoryError: Unable to create new native thread" whenever the JVM asks for a new thread from the OS. Whenever the underlying OS cannot allocate a new native thread, this OutOfMemoryError will be thrown. The exact limit for native threads is very platform-dependent. This article describes a test that can be run to find out those limits.

Solution

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In this Document
Goal
Solution
References


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