[WLS 12.1.2] - Non Thread Safe Access To HashMap And Infinite Looping (Doc ID 2099435.1)

Last updated on JANUARY 28, 2016

Applies to:

Oracle WebLogic Server - Version 12.1.2.0.0 and later
Information in this document applies to any platform.

Symptoms

On WebLogic Server (WLS) 12.1.2 intermittently noticing stuck threads as below in production during high load situation.This results in lot of long running and stuck threads and eventually the server becomes unresponsive.

--> The jsf lib being used is the one that comes with WLS i.e bea12.1.2/wlserver/common/deployable-libraries/jsf-1.2.war

 --> Using JSF (1.2.0) and Seam API, there is non thread safe access to the api method resulting in infinite looping at HashMap resize method

Cause

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