Implementing Siebel Business Applications on DB2 UDB for z/OS > Preparing for Implementation on the DB2 Host > Setting Up the DB2 Subsystem >

The Data Distribution Facility and Workload Manager

The Data Distribution Facility (DDF) is a component of DB2 that provides a connection between your DB2 subsystem and remote clients and systems. Specifically, it communicates with DB2 Connect for remote application access. You must configure and activate DDF before you install Siebel Business Applications. DDF setup is described in the vendor documentation on the IBM Web site.

Workload Manager (WLM) is an integrated component of z/OS that manages system resources across z/OS subsystems. You must configure WLM for use with DDF threads and Siebel application stored procedures and user-defined functions (UDFs).

In relation to DB2, WLM manages incoming requests for DB2 stored procedures and UDFs, and allocates resources to process them. If you do not have WLM installed and configured, you cannot use Siebel components that require stored procedures and UDFs. Stored procedures are used with EIM (when UPDATE STATISTICS=TRUE) and the Siebel Upgrade application component. UDFs are used with EIM Export and currency aggregations. For information on setting up WLM, see the vendor documentation on the IBM Web site.