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Support Article

High number of PEGA0017 alerts in logs



PEGA0017 alerts impact system performance.

Error Messages

PEGA0017 alerts
collections/mru/PropertyReference: Successfully reduced Concurrent MRU Map by 6001 down to: 30000.
declaratives/fragments: Successfully reduced Concurrent MRU Map by 1001 down to: 5000.

Steps to Reproduce


Root Cause

A defect or configuration issue in the operating environment.
The PEGA0017 alert was triggered when the cache size exceeded the limit value and indicated that the stated cache instances were invalidated (purged).


Perform the following local-change:

Update the cache limits to minimize the number of times the cache is purged. Increase the limit for the caches for which PEGA0017 alerts occur.

For more information, refer to:

Published February 10, 2020 - Updated October 8, 2020

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