Error: Error(1,1): file:< Application path>/Model/src/model/mdssys/mdx/XXXXXX.xml.rdf: XML-20108: (Fatal Error) Start of root element expected Solution: JDeveloper is expecting some xml content in the file. So put some blank xml tags in that file like below and save the file. <?xml version=”1.0″ encoding=”UTF-8″ ?> <test> </test>