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Support Article

NoClassDefFoundError on running SaveAllPropositions activity



NoClassDefFoundError occurs in the logs when SaveAllPropositions activity is run.

Error Messages

java.lang.NoClassDefFoundError: com/pega/pegarules/priv/util/StackTrace

at com.pega.pegarules.session.internal.async.AgentQueue.handleProblem(
at com.pega.pegarules.session.internal.async.AgentQueue.runEnd(
at com.pega.pegarules.session.internal.async.AgentQueue.runEnd(

Steps to Reproduce

Run the SaveAllPropositions activity.

Root Cause

The server is unable to correctly load the classes from the database.


Perform the following local-change:

Set the below DSS setting and restart the server:

Ruleset: Pega-Engine

Purpose: prconfig/initialization/preloadengineclasses/default

Value: com.pega.pegarules.priv.util.StackTrace com.pega.apache.log4j.spi.ThrowableInformation

Published February 8, 2018 - Updated December 2, 2021

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