INC-144864 · Issue 599146
Unneeded AUC error percentage calculation removed for better system performance
Resolved in Pega Version 8.5.2
When generating snapshots of the ADM models, an inefficiency in the metric calculation for the AUC error percentage caused an excessive amount of memory to be allocated which could cause slowdown or require a system reboot. This has been resolved by removing the problematic AUC error percentage calculation as it is not used in the UI.
INC-148006 · Issue 605581
Enhancements added for very heavy use of strategy decision logic
Resolved in Pega Version 8.5.2
Recent updates were made to improve memory performance for scenarios where a single request primary page had tens of thousands of pages under an embedded pagelist property and the decision logic involved a strategy running on all the pages in that page list. To further improve performance, the array iterator has been modified and a DSS has been added that makes the threshold (50) in SSAExecutionContextIteratorFactory tunable.
INC-150854 · Issue 608368
Logic optimization disabled in offers
Resolved in Pega Version 8.5.2
Offers that should not be eligible to customers were passing through even though the offer was narrowed down to using “OR” conditions in the Engagement policies. This was traced to the logic optimization ignoring precedence, and has been resolved by disabling the optimization.
INC-168253 · Issue 652546
Documentation updated for using Connect MQ with clustered queues
Resolved in Pega Version 8.6.3
After update to Pega Platform v8.6, an issue was seen with Connect MQ rules that used an alias queue. The support documentation has been revised to outline the necessary steps for updating an application to perform as expected. In the Pega-IntegrationEngine ruleset, create the following dynamic system settings and their default values: "mq/pmo" = 0 "mq/gmo" = 0 "mq/oo_request" = 1040 "mq/oo_response" = 16 For more information, dynamic system setting support articles are available.
INC-170458 · Issue 677862
Handling updated for queue processor locks
Resolved in Pega Version 8.6.3
The Final activity mentioned in the processing epilog of the Service File rule was not being consistently called from File Listener, causing some of the cases to become stuck and not continue to the next stage. Investigation showed that if the lock was held by the queue processor requestor, the system was unable to obtain the lock but still proceeded to update the LogServiceFile page and persist it. This resulted in overwriting changes made on the LogServiceFile page by the requestor, resetting the completed-batches-count set back to 0. To resolve this, RuleServiceFile -> updateLSFBatchCounts() will call the overloaded lockAndLoad() method in LogServiceFile that accepts a parameter called lockAttempts. This will attempt to obtain a lock for a given number of times before throwing an exception.
INC-173434 · Issue 672675
Pushservlet cookie path updated to resolve error
Resolved in Pega Version 8.6.3
A very large number of exceptions were being logged indicating "Unhandled error in web.request.internal.URLComponentProcessorImpl.populateCSRFToken", impacting the ability to perform log analysis. This exception has been resolved by updating the pushservlet cookie path.
INC-176138 · Issue 668938
Decision table query performance improvements
Resolved in Pega Version 8.6.3
Work done previously to improve performance by preventing the decision rule from being treated as a custom rule has been further augmented by preventing the standard Declarative Rules from being treated as Custom Rules while building the Declarative Cache.
INC-183728 · Issue 665132
Oracle handling updated for primary key in upgrade DDL
Resolved in Pega Version 8.6.3
Previously, when a primary key of a table was created Oracle would automatically create a unique index with the same name as the primary key. However, with the introduction of Oracle 19, an optimization was added which will not do that if there is another unique index on the table which contains the column(s) of the primary key. This difference can cause updates to fail with the error "cannot drop index used for enforcement of unique/primary key". This has been resolved by updating the handling for primary key constraint and the corresponding index name.
INC-185614 · Issue 684848
Resolved access errors for external database class mapping generation
Resolved in Pega Version 8.6.3
After update, opening the Database Class Mappings landing page displayed all database tables linked to customer data schema as an exclamation mark with the error tooltip : "width = device-width". In addition, the error "Class: com.pega.pegarules.pub.PRRuntimeException Message: Error: You lack access required to execute Pega-Landing-DataModel-DBClassMappings.pzLPCheckDBMapRowCount" was logged. The application behaved normally despite the exceptions. This was traced to the the warning tool tip not loading correctly for the Exposed/Mapped column in Configure-Data Model->Class and properties->Database class mappings->select class category(Data)->for CustomerData, and has been resolved by updating the security settings to re-allow invocation from browser, require authentication, and set the correct privileges.
INC-185758 · Issue 678456
Resolved database contention during high-performance case creation
Resolved in Pega Version 8.6.3
During extreme load on the application, updating the latest pyLastReservedID column of 1 row in the data.pc_data_uniqueid table for a particular case type could cause database contention. This was a missed use case for recent ID generation optimization, and has been resolved by amending the MERGE statement to resolve an SQL exception sometimes seen on on Oracle and SQLServer.