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.

End of support for Microsoft Internet Explorer 8 and quirks mode applications in Pega 7.1.9

In accordance with Microsoft’s announcement to discontinue support for Internet Explorer 8 in January 2016, Pega 7.1.9 does not support Internet Explorer 8, nor does it support non-HTML5 standard user interfaces.

You must upgrade to Microsoft Internet Explorer 9 or later or use Google Chrome, Apple Safari, or Mozilla Firefox. If you are using Internet Explorer 9 or later, you must turn off compatibility mode by accessing the Compatibility View settings.

Note the following:

• Pega 7.1.9 does not support user interface rules that are not based on HTML5 standards (rules in quirks mode).
• If you use applications that are rendered in quirks mode, which enables Pega 7 to correctly display and render non-HTML5 standard user interfaces, you must update them to standards-based HTML5 user interfaces when you upgrade to Pega 7.1.9 or later. Pega 7 provides automated tools to help you migrate your applications.
• Pegasystems Global Customer Support will not investigate or fix any Pega 7.1.9 bugs or support requests that are exclusive to Internet Explorer 8 or quirks mode user interfaces.

You can quickly identify which components of your application user interface are not HTML5 standards-based by clicking Designer Studio > User Interface > HTML5 Application Readiness.

Upgrading to Pega 7.1.9 and a newer browser offers the following benefits:

• These browsers are HTML5 and CSS3 compliant.
• New features are supported and existing features work as intended.
• The Pega 7 Platform user interface is displayed and rendered as intended.
• Browser security is enhanced.

If you have additional questions about browser support, see the Platform Support Guide or contact Pegasystems Global Customer Support.

Real-time pulse processing for multinode systems

Multinode development environments now use real-time pulse processing. Previously, when a change was made on one node, the pulse processing interval could take a minute or more for that change to be reflected on another node. Now, when a rule is changed on one node, that change is immediately reflected on all the other nodes in the cluster. This change helps to ensure that users are running a rule on the same node as where the rule was changed.

Verifying that a Pega 7 Platform instance is running

You can verify whether a Pega 7 Platform instance is up and running by entering this URL: http://<<hostName:port/contextName>>/PRRestService/monitor/pingservice/ping

The Pega 7 Platform Engine responds with HTTP Response Code 200 if the instance is available. The response contains JSON text in the format { "duration":"<time in milliseconds>" }. Any other response codes or timeout indicate that the instance is unavailable.

Updated default system pulse processing settings

The default settings for system pulse processing have been updated in this release.

Upgrades to Pega 7.1.9 from a previous version of the Pega 7 Platform use database pulse by default. Database pulse synchronizes rule changes at a periodic interval across all nodes in a system.

New installations of Pega 7.1.9 use cluster-based pulse by default. Cluster-based pulse immediately updates rule changes across all nodes in a system after the changes are saved.

You can change the database pulse setting to the cluster-based pulse setting by updating the value attribute for initialization/pulse/transport to "cluster" in the prconfig.xml file or in the Dynamic System Settings. Changing from database pulse to cluster-based pulse requires a full cluster restart after the changes are made.

For more information, see Pega-RULES agents.

Database storage used for passivation in High Availability mode

When an application is running in High Availability mode, the value attribute for initialization/​persistrequestor/storage in the prconfig.xml file or the Dynamic System Settings​ now defaults to "database."

Previously, applications running in High Availability mode required shared passivation, where either initialization/​persistrequestor/storage was set to “OnTimeout” or a custom passivation mechanism was used. The change to using database by default provides persistent storage for passivation, and provides control for the landing page for High Availability.

For more information, see Understanding passivation and requestor timeouts and the High Availability Administration Guide.

PegaDISTRIBUTION Manager (PDM) is no longer available

The PegaDISTRIBUTION Manager (PDM) is no longer available in the Pega 7 Platform. The related PDN articles and help topics have been archived.