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Support Article

Low system performance when a class has four billion records

SA-54491

Summary



The class rule requires 600 seconds to load when the system holds a class which contains four billion records.


Error Messages



Class record is taking a long time to load


Steps to Reproduce

  1. Create a data class
  2. Map the data class to a table from the database using the data admin database table
  3. Insert four billion records in the table
  4. Open the Pega Dev portal
  5. Open the class rule form


Root Cause



A defect in Pegasystems’ code or rules. The query is changed such that instead of executing a query using count(*), a different style of the query is executed.  

Resolution



Perform the following local-change:
Customize the RULE-OBJ-ACTIVITY RULE-OBJ-CLASS ONBEFOREDISPLAY activity rule which is available by modifying a local copy of the rule such that it does not use the select count(*) query, but selects a random value (character X) and limits the results to one.



 


 
Suggest Edit

Published August 19, 2019 - Updated October 8, 2020

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