java.lang.NoClassDefFoundError: org/apache/log4j/Logger Error While Invoking PX After Upgrading to 9.3.6 RUP3 or Above (Doc ID 2379524.1)

Last updated on DECEMBER 07, 2022

Applies to:

Symptoms

When attempting to run custom Process Extension (PX) such as Event PX, Action PX, AutoNumber PX using log4j.jar on RUP applied instance, it fails to run with below error:

ERROR
org/apache/log4j/Logger

Below error is found in Agile Application Server log (stderr.log or nohup log):

Also, unable to see deployed custom PX class listed from:
(For Action/Event PX) Java Client > Admin tab > Settings > System Settings > Event Management > Event Handlers, open custom Event Handler, and go to General Information tab > Event Action field
(For AutoNumber PX) Java Client > Admin tab > Settings > Data Settings > AutoNumbers, open Custom AutoNumber, and go to General Information tab > Custom AutoNumber field

STEPS
The issue can be reproduced at will with the following steps:
1. Log into Web Client, and run PX using log4j

Changes

 Applied 9.3.5 RUP4 and after or applied 9.3.6 RUP3 and after

Cause

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