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Support Article

System Pulse agent disabled automatically on restarting server

SA-73101

Summary



System Pulse agent is disabled automatically on restarting the server.


Error Messages



[   PegaRULES-Batch-5] [  STANDARD] [                    ] [     PegaRULES:07.10] (     internal.async.AgentQueue) ERROR   - Agent [Pega-RULES] activity [Code-.SystemPulse] queue number [1] disabled due to execution errors ErrorMsg: com/pega/apache/log4j/spi/ThrowableInformation
[   PegaRULES-Batch-5] [  STANDARD] [                    ] [     PegaRULES:07.10] (     internal.async.AgentQueue) ERROR   - Agent [Pega-RULES] activity [Code-.SystemPulse] queue number [1] disabled due to execution errors ErrorMsg: com/pega/pegarules/priv/util/StackTrace



Steps to Reproduce

  1. Restart the server
  2. Check the System Pulse agent in SMA


Root Cause



Classes do not load during engine startup and hence the agents are disabled.


Resolution

Perform the following local-change:
  1. Include below setting in the prconfig.xml file:
    <env name="initialization/preloadengineclasses" value="com.pega.pegarules.priv.util.StackTrace com.pega.apache.log4j.spi.ThrowableInformation"/> (Space separated class names) 

     
  2. Set the logging level for the below class in the prlogging.xml file to load the classes successfully during server startup:
    com.pega.pegarules.session.internal.engineinterface.etier.impl.EngineStartup --- DEBUG level

 
Suggest Edit

Published August 15, 2019 - Updated December 2, 2021

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