Architecture of BW 7.x Load stage

The functionality of the BW 7.x Load stage is represented by the following diagram:

  • A GUI client selects a Source System and a 7.x DataSource from the SAP BW system and displays the corresponding transfer structure into which you load data. In Hierarchical Datasource, the GUI client also need to select a Hierarchy against which the data need to be loaded.
  • A GUI client selects an appropriate data transfer agent which is SAP BW InfoPackage.
  • A runtime server stage processes data from an input link, sends its output directly to SAP BW using an RFC Server or the data is first written to a text file, and generates an associated metadata file.
  • An RFC Server loads data into SAP BW. A separate instance of the RFC Server is constantly running for each Source System supported by IBM® InfoSphere® DataStage®.
  • An RFC Server Manager starts and stops the individual RFC Server instances, depending on which Source Systems are supported.

Requests from SAP BW to load data from an InfoSphere DataStage source system can be serviced only if a job produces the required data and metadata files. You can accomplish this by running the job independently before SAP BW makes the load request.

Note: You can also request that a SAP BW InfoPackage supply a job name as part of the load request itself. In this case, the RFC Server, upon receiving the request, runs the specified job to completion before loading the resultant data file into SAP BW.