Use this section if you made custom updates to your existing definition file (.rpd) and want to retain them. Updating a modified repository definition file (.rpd) requires the Oracle BI Administration tool. There are two methods to updating a Repository Definition (.rpd) file.
The first method involves comparing the original repository definition file with the new repository definition file to generate an XML file with the differences between the two files. You can then use the XML file to determine which updates get applied to the repository definition file. Use this option if you want to manually choose what updates are applied.
The second method allows the Oracle Business Intelligence Administration tool to create a merged repository definition file based on the differences between two repositories (original .rpd and new .rpd). This method is commonly referred to as a three merge because there are three files involved: the original .rpd file, the new .rpd file, and the merged .rpd file, which will be created as a result of this method being used. Use this option if you want to use a tool to determine what changes are applied.