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Support Article

ADM Update Reporting Data slow refresh and thread dump in logs



After clicking on the "Update Reporting Data" button in the "Decisioning: Adaptive Model Reporting", it takes an average of 12 minutes for the data to refresh.
Clicking the "Update Reporting Data" button repeatedly can sometimes throw “Unable to synchronize on requestor” error trace in the log file.

Error Messages

On the UI:

There has been an issue; please consult your system administrator
Tue May 03 12:41:57 BST 2016

In the log file: Thread dump was generated and immediate followed by "unable to synchronize" error -

2016-05-03 12:41:57,755 [ WebContainer : 9] [ ] [ ] [ ] (.timers.EnvironmentDiagnostics) INFO - --- Thread Dump Starts ---

--- Thread Dump Complete ---
2016-05-03 12:41:57,755 [ WebContainer : 9] [ ] [ ] [ ] (ngineinterface.service.HttpAPI) ERROR : Unable to synchronize on requestor H3D051FB171288EE1FA53C1EAEC78B1BF within 120 seconds: (thisThread = WebContainer : 9) (originally locked by = WebContainer : 12) (finally locked by = WebContainer : 12)

Steps to Reproduce

Click on the "Update Reporting Data" button in the "Decisioning: Adaptive Model Reporting" Page.

Root Cause

The “ADMSnapshot” Agent is running without any issues, which can be verified by logging into the System Management Application.

This would enable update of ADM reporting data at scheduled intervals. To avoid duplicate snapshots, one must make sure there is only one node enabled to run the ADMSnapshot Agent when working in a multi-node Pega7 environment.

For more details refer DSM installation guide, Page# 31.


Adjust the Batch size by changing the admmart or batchSize Dynamic System Setting in the Pega-ProcessCommander Ruleset.

Batch size for taking a snapshot is 50, by default; a value considered suitable even in cases of large size models.

Suggest Edit

Published June 16, 2016 - Updated October 8, 2020

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