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Support Article

Frequent PEGA0016 cache alerts



A system administrator observes a large number of PEGA0016 alerts in the PegaRULES ALERT logfile.

Error Messages

No error messages are displayed on screen; no applicable error messages are found in the PegaRULES logfile. However, the PEGA0016 alert is prevalent in the PegaRULES ALERT logfile:

declaratives/fragments: Attempted to agressively reduce MRU from: 1250 by 650 to 600; actually removed 650 entries leaving ~600.

Steps to Reproduce

No specific steps were found to reproduce this alert message.

Root Cause

The default 'declaritives/fragments' instance count limit is being used. Increase this value to eliminate this message.


Advised systems administrator to update the prconfig.xml file, and implement the following change to the cache threshold:

<env name="declaratives/fragments/instancecountlimit" value="5000"/>

Published May 16, 2017 - Updated October 8, 2020

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