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.

Synchronized database and application server settings

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

Decision Data Store data sets can be used only on DNodes

Data flows that contain Decision Data Store data sets as the primary or secondary source must be created and executed only on DNodes.

Data flows are not restarted automatically after application server restart

When you restart the application server or the Pega 7 server, you stop the execution of your data flows. The interrupted batch and real-time runs are marked as Failed. 

Recommendation:

• Go to the Designer Studio > Decisioning > Decisions > Data Flows > Batch processing tab and start the failed batch runs.

• Go to the Designer Studio > Decisioning > Decisions > Data Flows > Real-time processing tab and activate the failed real-time runs.

Value list and value group properties are not supported inside data flows

Value list and value group properties are not supported inside data flows, and you need to instead use other property types.

See the Pega 7 developer help to check all available property types.

Data flow preview size is fixed to 10

The Preview option for each shape in data flows returns the first 10 records. This value is fixed and currently cannot be changed.

Data Flow transformation shapes cannot be used in combination with the Compose or Merge shapes

When you reference another data flow from a data flow that contains the Compose or Merge shape, the referenced data flow cannot contain transformation shapes (EventStrategy, Decision strategy, Convert).

Data flow validation does not currently prevent you from designing a data flow that goes against this design pattern. Make sure that your data flows follow this design pattern by checking the referenced and referencing data flows.

Data flow destination is resolved at assembly time

Data flow execution always uses the design-time destination data sets or destination data flows, regardless of the input records at run time.

Example:

You create a data flow and set the destination to a specific data set. In the data flow, you use a strategy that produces some results. Regardless of these results, the execution of your data flow always uses the destination data set that you specified when you designed the data flow.    

The same applies when you set the destination to a data flow.

Schema not found error when importing a Rule-Admin-Product file

If you import a Rule-Admin-Product file (RAP) file that includes a schema that has a view, grammar parsing changes can mean that the Pega 7 Platform is unable to find the schema.

To enable the Pega 7 Platform to find the schema:

1. Review the error message that indicates that the schema was not found and identify the following items:
   • The name of the schema that is causing the error
   • The table name in the format: wrong_schema_name.table_name...
   • The DDL that the Pega 7 Platform is trying to apply
2. Use the table name to identify the correct schema name in your system. This schema is usually your data schema, but might also be an external database.
3. Download the DDL.
4. Correct the schema name and save the DDL.
5. Manually apply the DDL.

Node description cannot match application server node name

A node's Short Description should not be the same value as the application server node name. If the node's Short Description is changed to be the same value as the application server node name, then the node description is automatically changed back to the original value after a system restart.