Skip to main content

This content has been archived and is no longer being updated. Links may not function; however, this content may be relevant to outdated versions of the product.

Support Article

Poor Performance/Hung PRPC Node Instance



PEGA 7.1.7 users complain of generally poor system performance.  Intermittantly, the PRPC node will become non-responsive, requiring a shutdown/restart.

The Pega Sys Admin has reviewed the Pega logfile, and concluded that thread references to a third party application called HazelCast are to blame for the hung threads/poor performance.

Error Messages

No error messages are displayed on screen.  However, the PRPC log does contain a thread dump detailing hung threads.  The thread dump is too voluminous to include in this explanation.  However, the analysis of this thread dump is provided following.

Steps to Reproduce

No specific steps were found to reproduce this error condition.  Poor performance would seemingly afflict the users throughout the business day - from initial login all the way to user logout.

Root Cause

Examination of the provided logfiles reveals a thread dump.  The thread dump root cause was a hung thread, waiting on a CONNECT-SOAP operation to complete.  Examination of the CONNECT-SOAP operation revealed the Pega ALERT EXCP0001 was being thrown, with an error condition indicating that the CONNECT-SOAP had failed due to a problem with the SOAP Service.


Advised systems administrator to contact their SOAP service provider, and discuss Service Level Agreements regarding the service.  The customer has since confirmed that the service is failing, and the administrator has confirmed root cause.  Service is being repaired/tuned to accomodate the increased load of calls.

Published July 14, 2015 - Updated October 8, 2020

Was this useful?

0% found this useful

Have a question? Get answers now.

Visit the Collaboration Center to ask questions, engage in discussions, share ideas, and help others.

Did you find this content helpful?

Want to help us improve this content?

We'd prefer it if you saw us at our best.

Pega Community has detected you are using a browser which may prevent you from experiencing the site as intended. To improve your experience, please update your browser.

Close Deprecation Notice
Contact us