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Websphere Fixpack 35 causes server hung threads



After applying Websphere (WAS) 7 fixpack 35, PRPC server cannot start due to hung threads.

Error Messages

The following error is from wsfpp1lpdza433wspqa5Server:

[1/3/15 8:25:51:221 MST] 00000002 ThreadMonitor W CWWSR0605W: Thread "<ThreadName>" (00000016) has been active for 659104 milliseconds and may be hung. There is/are 1 thread(s) in total in the server that may be hung.
at Method)
at com.pega.pegarules.priv.context.web.WebSphereNodeInfo.traverseFind(
at com.pega.pegarules.priv.context.web.WebSphereNodeInfo.traverseFind(

Steps to Reproduce

Not reproducible internally, but in one particular user's environment: upgrade to WAS fixpack 35 and restart the server - system hung with hung threads as desribed in the summary. 

Root Cause

The root cause of this problem is in a third-party product: IBM Websphere.


This issue is resolved by HFix-23128 by avoiding the traverseFind method.


Suggest Edit

Published August 12, 2015 - Updated October 8, 2020

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