FOP Transformation generating PermGen error [OutOfMemory] on Oracle 10G server

[Debasish Jana]

Hi:

While issuing a PDF generation from a XSL and XML pair on Oracle 10G server,
we are getting PermGen error [OutOfMemory]. Same code works Ok on Tomcat as
well as Sun App server. Can anybody throw some light what could be the
workaround? Need help.

Our XSL transformation code (writeReport method that takes three parameters:
names for xml data file, XSL file and PDF file) is as given below.

warm regards,

Debasish Jana
-----
    public boolean writeReport (String xmlFile, String xsltFile, String
pdfFile)
    {
        try
        {
            OutputStream out = new FileOutputStream (pdfFile);
            out = new java.io.BufferedOutputStream (out);

            try
            {
                FopFactory fopFactory = FopFactory.newInstance ();
                 FOUserAgent foUserAgent = fopFactory.newFOUserAgent ();

                // Construct fop with desired output format
                Fop fop = fopFactory.newFop (MimeConstants.MIME_PDF,
foUserAgent, out);

                // Setup XSLT
                System.setProperty ("javax.xml.transform.TransformerFactory",
"org.apache.xalan.processor.TransformerFactoryImpl") ;
                TransformerFactory factory = TransformerFactory.newInstance();
                Transformer transformer = factory.newTransformer (new
StreamSource (new File (xsltFile))) ;

                // Set the value of a <param> in the stylesheet
                transformer.setParameter ("versionParam", "2.0");

                 // Setup input for XSLT transformation
                Source src = new StreamSource (new File (xmlFile)) ;

                // Resulting SAX events (the generated FO) must be piped
through to FOP
                Result res = new SAXResult (fop.getDefaultHandler ());

                 // Start XSLT transformation and FOP processing
                 transformer.transform (src, res);

            }
            catch (Exception e)
            {
                return (false) ;
            }
            catch (Error e)
            {
                return (false) ;
            }
            finally
            {
                out.close ();
            }
        }
        catch (Exception e)
        {
            return (false) ;
        }
        return (true) ;
    }