When you load an OBIEE 10g resource, Metadata Manager connects to the Presentation Server to extract the metadata for the reports. However, Metadata Manager cannot extract the schema metadata directly from the repository. The OBIEE schema metadata is stored in an RPD file. Because Metadata Manager cannot read RPD files, you must convert the RPD file to a UDML file.
Metadata Manager extracts the schema metadata from the UDML file, extracts the reports from the Presentation Server, and links the reporting metadata to the presentation model when you load the resource.
OBIEE has a utility program to convert an RPD file to a UDML file. This utility is part of the OBIEE server installation.
Use the following command to convert the repository RPD file to a UDML file: