More about Extract rules

After you save an Extract rule, you can test the extraction.

1.               Click Run.

2.               Enter a unique identifier and the maximum number of records to extract.

3.               Click Perform Extract.

4.               Review the resulting data and log files.

Scheduling Extract rule runs

For more efficient operation, you should schedule run of an Extract rule using a Pega 7 Platform agent or from a Windows or UNIX/Linux command-line. See Running the command-line extract process and Extract rules using a Pega 7 Platform agent.

Exception handling

Executing BIX may result in errors or exceptions being reported. These exceptions may relate to syntax errors (in command-line execution), database constraint violations (when exporting to a database), or similar issues. See BIX logging and error handling. See BIX logging and error handling.

Rule operation

Extract rules can operate on the BLOB column (Storage Stream) of tables in the PegaRULES database or they can be used to extract data from tables with no BLOB column. However, when a class table includes a BLOB (pzPVStream column), extraction always is performed from that BLOB value, and not from other database columns.

If the extract rule class is a class group, the query on the source database gets all WorkObject instances of all classes within the class group. If the extract rule class is not a class group, the query on the source database only gets instances of the particular class.

Forward and backward chaining during BIX extract

In the prconfig file, a setting governs whether forward and backward chaining are enabled during a BIX extract. You should disable forward and backward chaining for better throughput when running BIX.