Always nice to see consultants post real-world scenarios using Oracle tools and technology. Michael Reitsma has posted an entry here on using custom java activities in process flows for loading large XML into a data warehouse. There is also a useful insight into using the runtime public views for monitoring the activities and seeing the low level errors. More postings from Michael I hope sharing his knowledge and experience, thanks Michael for taking the time!
It's definitely a small world - he used a SAX parser (Saxonica) from Michael Kay who I worked with a long way back in ICL where he was driving a next generation metadata repository...sounds familiar:-) Back then we were using a cool persistent Prolog (Megalog) language from the ECRC.