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Support Article

Error messages display in logs after upgrading to Pega 8.2



Error messages display in the logs after upgrading Pega 7.4 to Pega 8.2.

Error Messages

405[sse-nio-8443-exec-10][TABTHREAD6][][CottonEx](nal.CacheDataToCandidateMapper)WARN| xxxxxxxxxxx - Unable to load RULE-OBJ-CASETYPE DMORG-DMSAMPLE-WORK-CREDITLIMITAPPLICATION PYDEFAULT #20161207T103356.458 GMT due to Database-BadClassDef	DMOrg-DMSample-Work-CreditLimitApplication; This may cause the wrong rule to run during rule execution. 

Steps to Reproduce

  1. Upgrade Pega 7.4 to Pega 8.2.2 
  2. Log in to the system

Root Cause

A defect or configuration issue in the operating environment. Obsolete classes under DMORG-DMSAMPLE-WORK are not deleted.


The rules are present on the pr4_rule and pr4_rule_vw tables.

Perform the following local-change to delete the rules from the tables instead of deleting them from the queue:

  1. Take a backup of pr4_rule and pr4_rule_vw tables
  2. Delete the rules by running the below commands:
    delete from pr4_rule where pzinskey like 'RULE-OBJ-CASETYPE DMORG-DMSAMPLE-WORK-%';
    delete from pr4_rule_vw where pzinskey like 'RULE-OBJ-CASETYPE DMORG-DMSAMPLE-WORK-%';

  3. Restart the server


Published October 18, 2019 - Updated December 2, 2021

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