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Performance degrades on performing any action in Designer Studio



Performance degrades while performing any operation in Designer Studio.

Error Messages Unable to synchronize on requestor HU2RN6VAUVISGFBYRGGCOMVE65FD0SFR5A within 120 seconds: (thisThread = WebContainer : 10) (originally locked by = WebContainer : 8) (finally locked by = WebContainer : 8)

Steps to Reproduce

Open Designer Studio and perform any action.

Root Cause

The PEGA0101 alert is generated when a queue processor fails because of a missing or failed stream node. The stream node is not available in the cluster and as a result, all the threads are in the waiting state concluding in the occurrence of the exception.


Perform the following local-change: 
  1. Add a new stream node to avoid Pega0101 alerts
  2. Set one of the nodes to be universal. A universal node supports both the Decision Strategy Manager (DSM) Stream Service and Queue Processor rules. Use the below setting to configure the node:


Published August 15, 2019 - Updated December 2, 2021

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