Regarde ton classpath car il y a un bug avec une librairie Oracle ?
oracle.xml.parser.v2.XMLParser.parse(XMLParser.java:140)
Je crois que FOP utilise Xerces et Xalan par défaut.
http://xmlgraphics.apache.org/fop/relnotes.html
Important changes since 0.20.3:
* FOP should now work with any JAXP1.1 compliant parser/transformer. It has been successfully tested with Xerces/Xalan, Saxon and JDK1.4 (which includes Crimson and Xalan).
* The following JARs have been updated: Xerces to version 2.0.1, Xalan to version 2.3.1 and Batik to version 1.5beta2.