WebLogic Server Does Not Clean the Objects in ThreadLocal Automatically

(Doc ID 1929223.1)

Last updated on NOVEMBER 05, 2016

Applies to:

Oracle WebLogic Server - Version 10.3.5 and later
Information in this document applies to any platform.

Goal

WebLogic Server does not clean the objects set in ThreadLocal after a thread execution has completed. This causes a memory leak.

Below is a example of memory leak using the Eclipse Memory Analysis Tool (MAT):

1. Right click on the suspicious leaking object -> Path To GC -> With All Reference

2. The object is referred by the ThreadLocal object of ExecuteThread '19'

3. ExecuteThread '19' is not working on any request. It is idle.

Solution

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