Published Release Notes

Required Oracle optimization parameter

To optimize performance, set the Oracle parameter optimizer_index_cost_adj to a value between 20 and 25. If this value is not set, the system can run exceedingly slowly, potentially blocking users from login.

Split schema upgrade instructions missing properties

If you upgraded from 5.x, 6.x, or 7.x using the instructions in previous versions of the upgrade guide, you may have neglected to set the properties below in your migrateSystem.properties file when you migrated your upgraded schema to the source system:

pega.rules.objects.generate=true

pega.rules.objects.apply=true

If these properties were not set during an upgrade that splits the schema, your environment does not have the indexes, triggers, and primary keys on the rules tables.

To check for this issue, see if the pr4_base and pr4_rule rules tables in your existing rules schema are missing primary keys. If they are, use the SQL scripts in the ResourceKit\MigrationRecoveryScripts directory of the release to cleanup duplicate rules that were created due to this issue. Follow the steps below to run the scripts.

To run the scripts on Microsoft SQL, Oracle, or PostgreSLQ

1. Take down any app servers using the affected schema.
2. Backup your database.
3. Replace all instances of @RULES_SCHEMA in <database>_cleanDups.sql with the name of the schema that contains the pr4_base table.
4. Run the <database>_cleanDups.sql script on the database with vendor tools (sqlPlus, SQL Server Management Studio, etc).
5. Replace all instances of @RULES_SCHEMA in <database>_fix_vw_table.sql with the name of the schema that contains the pr4_base table.
6. Run the <database>_fix_vw_table.sql script on the database with vendor tools (sqlPlus, SQL Server Management Studio, etc).
7. Generate and apply the ddl using the command line generateDDL command. Check the installation guide for your database or the upgrade guide for details about how to use the generateDDL command line script.
8. Rebuild the indexes for the tables in your rules schema using vendor tools. This is necessary so that your system runs at an optimum speed.
9. Optionally upgrade to the latest release, at this point your database is ready to be upgraded or used depending on your needs.

To run the scripts on DB2 for LUW or z/OS

1. Take down any app servers using the affected schema.
2. Backup your database.
3. Run the <database>_cleanDups.sql script on the database with vendor tools (UDB CLP, Data Studio, etc) to create the CLEANSE_RULES_DUPS stored procedure.
4. Run the query Call CLEANSE_RULES_DUPS(‘<rulesSchema>’); where <rulesSchema> is the name of schema that contains the pr4_base table.
5. After the previous step is complete drop the CLEANSE_RULES_DUPS procedure.
6. Replace all instances of @RULES_SCHEMA in <database>_fix_vw_table.sql with the name of the schema that contains the pr4_base table.
7. Run the <database>_fix_vw_table.sql script on the database with vendor tools (UDB CLP, Data Studio, etc).
8. Generate and apply the ddl using the command line generateDDL command. Check the installation guide for your database or the upgrade guide for details about how to use the generateDDL command line script.
9. Rebuild the indexes for the tables in your rules schema using vendor tools. This is necessary so that your system runs at an optimum speed.
10. Optionally upgrade to the latest release. At this point your database is ready to be upgraded or used depending on your needs.

Synchronized database and application server settings

Configure your database and application server to use the same time zone and character encoding to avoid conflicts.

System Management

The PRPC installer has been enhanced to handle additional error conditions related to partial installs and duplicate keys; additionally, the hotfix rollback feature has been improved, and the Rulebase compare tool now supports HTTP(S) environments.

• Rollback feature has been enhanced.
• RuleBase Compare will work for secure (HTTPS) environments as well as  non-secure (HTTP) environments.
• Install will gracefully handle the presence of a duplicate key during import.
• When install fails, system will set tables back to original state.
• Remote MBean methods will now work on multi-servant load-balancing systems.
• Enhancements were made to harnesses in Split Schema systems.

Automatically update dependent applications to use the latest versions of built-on applications

You can now automatically update dependent applications to use the latest versions of built-on applications. When you import an archive that you created from a product rule, you can update all dependent applications to be built on the latest application versions in the archive.

For more information, see Updating dependent applications with the latest versions of built-on applications.

Alerts for long-running queue processor and job scheduler activities

Pega Platform™ now saves an alert in the performance alert log when a queue processor activity or a scheduled job runs longer than the configured threshold value. Use the alerts to identify potential performance issues with long-running processes.

The alerts are enabled by default. You can change the alerts for dedicated queue processors and job schedulers at the rules level. For standard queue processors, you can also set the threshold value for the Queue-For-Processing command in an activity. You disable the alerts in dynamic system settings.

For more information, see:

• PEGA0117 alert: Long-running queue processor activity
• PEGA0118 alert: Long-running job scheduler activity

Introduction of Search and Reporting Service

Pega Platform™ now uses Search and Reporting Service, which is an independent microservice. The new enhancement provides a convenient way to manage your application data, and is easier to maintain. For example, because of the cloud-based architecture of Search and Reporting Service, any bug fixes and performance improvements occur seamlessly, and have no impact on your overall experience in Pega Platform.

For more information, see Search and Reporting overview.

Ability to restrict access to the Import wizard

You can now restrict access to the Import wizard so that users implement an automated pipeline to deploy changes between environments such as staging and production. Deployment Manager is one method by which to create pipelines. By using pipelines to propagate changes, users can apply a standardized and automated deployment process for migrating their applications.

For more information, see:

• Ensuring that users migrate applications with a pipeline by restricting the Import wizard
• Understanding model-driven DevOps with Deployment Manager

Optimized data schema upgrade

Several improvements have been made to optimize the speed of the data schema upgrade to help you experience minimal downtime during upgrade to Pega Platform 8.5™. The data schema upgrade process optimizations include the following improvements:

• Optimized database index creation during upgrade
• Optimized synchronization process to detect duplicate rules during the application import process
• A new upgrade setting for Pega Cloud® Services operators that reduces the time to upgrade clients that run large Pega applications, such as the CRM Suite

For more information, see Limit upgrade downtime with data schema upgrade improvements (8.5).

Support for hotfix file verification

Pega Platform hotfix files are now digitally signed so that they can be verified and authenticated. If your Pega Platform™ instance allows outbound URL connections, hotfix files are verified automatically during installation. If your Pega Platform instance does not allow outbound URL connections, you can verify the files manually by using third-party tools. Alternatively, if your Pega Platform instance does not allow outbound URL connections and you do not use third-party tools to verify hotfix files, you can import a certificate revocation list (CRL) for Pega Platform to use when checking the files to see if they have been revoked. 

For more information, see Verifying the authenticity of hotfix files.