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Support Article

Clearing declarative page cache on SMA does nothing



In the System Management Application (SMA), clearing the declarative page cache does nothing if there are node level parameterized data pagesNo data pages are cleared and there is no error or message when the cache clear button is clicked.

Error Messages

Not applicable.

Steps to Reproduce

In the SMA, in Advanced > Declarative Page Cache Management, click “Clear” on entire cache.

Root Cause

A defect in Pegasystems’ code or rules.  The SMA does not read the pzInsKey it needs to clear the data pages.


This issue is fixed in Pega 7.2. 

In earlier versions, perform the following local-change:
  1. Use the function pzDeleteAllInstancesOfDeclarativePage, which takes input as the data page name and clears all parametrized instances of the data page. 
  2. To clear all data pages at once, write an activity that loops pzDeleteAllInstancesOfDeclarativePage over all data pages. 

As the function is marked Pega-only, use the search string "old:pzDeleteAllInstancesOfDeclarativePage" to find it and copy it into an application ruleset.

Published March 1, 2016 - Updated October 8, 2020

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