Oracle XML Publisher Java API's showing arabic characters as question marks

Question

Hi All,
I have created a custom xml publisher report. All the setups in xdo.cfg and the fonts have been installed. When i run the report as concurrent program using the XDODTEXE as the executable this report executes fine displaying the arabic characters in the PDF output.
I have integrated this xml report to a OAF page where am getting the output of the arabic characters as ???????
Following is the java code i have used to generate the blob for the xml publisher report.
pageContext.writeDiagnostics(this,"Inside process Template",4);
AppsContext appsContext = ((OADBTransactionImpl)pageContext.getRootApplicationModule().getOADBTransaction()).getAppsContext();
String applicationShortName = dataDefApplication;
String dataSourceCode = dataDefCode;
OutputStream os = new ByteArrayOutputStream();
try {
DataTemplate dataTemplate = new DataTemplate(transaction.getAppsContext(), dataDefApplication, dataDefCode);
//Get Parameters
ArrayList parameters = dataTemplate.getParameters();
//set Parameter Values as ArrayList of oracle.apps.xdo.dataengine.Parameter
Iterator it = parameters.iterator();
while (it.hasNext())
Parameter p = (Parameter) it.next();
pageContext.writeDiagnostics(this,"Processing Parameters "+p.getName(),4);
if (p.getName().equals("P_AUCTION_HEADER_ID"))
if(AuctionHeaderId != null)
p.setValue(AuctionHeaderId);
else
p.setValue(null);
dataTemplate.setOutput(os);
dataTemplate.processData();
System.out.println(os.toString());
} catch (SQLException e) {
System.out.println("SQLException occurred.");
} catch (XDOException e) {
System.out.println("XDOException occurred.");
} catch(Exception e){
System.out.println("Exception (other) occurred.");
byte[] xmlb = os.toString().getBytes();
BlobDomain blob = new BlobDomain(xmlb);
return blob;
Kindly let me if i had missed something.
Thanks
Anoop

Answer 1

On a related note, I am seeing a couple of different types of 'incorrect' characters based on different NLS_LANG settings.
If it is set to AMERICAN_AMERICA.UTF8, I get characters like this:
رقم الموظ�
If it is set to ARABIC_UNITED ARAB EMIRATES.AR8MSWIN1256, I get characters like this:
ÑÞã ÇáãæÙÝ
Do any of you know what these characters are?
Thanks for any insight.