Published Release Notes

Child case queries performance can be slow

Some customers have reported that performance is slow when they execute queries on child cases. This issue is often indicated by PEGA0005 (query time exceeded limit) alerts that can be correlated to these queries in the logs. To resolve the issue, add a database index to each of your work tables by using a multicolumn index on the pxCoverInsKey, pxObjClass, and pyStatusWork columns.

See Performance improvements for child case queries.

Updates to the Data Page rule form

You can use the enhanced Data Page rule form to specify the name of a source system in the System name field in the Data sources section. This field represents the name of the system that is associated with a data source. For example, if your data source is a REST connector that connects to an external weather service such as Google Weather API, you can enter Google Weather in the System name field for the data source. The system name is used to display the source systems for a data type on the External Data Entities landing page.

For more information, see Viewing external data entities.

Verify ML Readiness error: Upgrades from Pega 7.1.0 through 7.1.8 do not replace nonversioned rules

Upgrading from any Pega 7 Platform version between Pega 7.1 and Pega 7.1.8 to Pega 7.2 does not automatically replace nonversioned rules. If you revalidated and saved a Pega 7.1.x rule after the timestamp on the Pega 7.2 version of the rule, upgrading to Pega 7.2 does not overwrite the saved rule. You might see either of the following behaviors:

• The upgrade fails with the following error message:
  Verify ML Readiness
• The upgrade succeeds, but you might be unable to open changed rule forms.

If the upgrade fails, see the Pega 7 Platform Upgrade Guide to force the upgrade.

This known issue does not affect Pega 7.1.9. After the upgrade has finished, apply Hotfix 27288. For information about obtaining and applying hotfixes, see Hotfix Manager.

Unused agents run in background

The Update PegaRULES database table statistics agent and the Collect PegaRULES database blob size statistics agent have been added to support future development. These agents run in the background, but they do not do anything. You can, but do not need to, disable them from the Edit Agent Schedule landing page.

For more information, see Agent Schedule form - Completing the Schedule tab.

Default value of the threadpoolsize agent affects batch indexing

After you patch Pega Platform to version 8.5.2 or higher, the system changes the default value of the threadpoolsize agent, which controls the number of concurrent activities (threads) in the system, from 5 to 15. Batch indexing in Pega Platform™ does not require all 15 threads, so you can change the agent value to increase system performance by managing the indexing/distributed/batch/numworkers dynamic system setting.
If your deployment does not support that setting, and batch indexing does not use Queue Processors, the system uses the threadpoolsize value for batch indexing instead.

For more information, see Editing a dynamic system setting.