XaResource.prepare Method Error

Question

When we execute the xaresource.prepare(); throws an exception of:
RuntimeException in method: public abstract void transaction.bean.TransactionManager.insert(common.valueObject.VOInsert,java.lang.String) throws java.lang.Exception,java.rmi.RemoteException:
java.lang.NullPointerException
     at org.postgresql.util.Base64.encodeBytes(Base64.java:306)
     at org.postgresql.xa.RecoveredXid.xidToString(RecoveredXid.java:51)
     at org.postgresql.xa.PGXAConnection.rollback(PGXAConnection.java:287)
this is the code:
private boolean canBeCommited(Vector<XAResource> resources, Xid xid, int actualResource ) throws Exception
          try {
               System.out.println("resources.get(actualResource) -> " + resources.get(actualResource));
               System.out.println("xid -> " + xid);
               int ret = resources.get(actualResource).prepare(xid);
               if(ret == XAResource.XA_OK)
                    if (actualResource==0)
                         return true;
                    else
                         return canBeCommited(resources,xid,actualResource-1);
               else
                    return false;
          catch (XAException e) {
               // TODO Auto-generated catch block
               //e.printStackTrace();
               throw e;
     }

Answer 1

You may need to recompile your class with jar(s) from 11g.
If you have problems to make it running, take a sample component containing a serviceHandler from HowTo Components 11g and just adjust it to your needs. The link to components: http://bexhuff.com/2011/03/howto-component-samples-for-oracle-ucm-11g