Heap Space issues with Large Files?

We are attempting to utilize Axis (Currently 1.4). The data we are sending
is ASCII, which we've been sending in a very basic way for some time using:

Service service = new Service();
Call call = (Call) service.createCall();
String ret = (String) call.invoke( new [] {args[2],args[3]});

The size of the data that we now need to transmit is reaching about 50MB.
The computers we are using are quite robust, and we can allocate up to 10GB
for the client, and a similar amount for the server. The server is Tomcat 6.
Recently, while attempting to access 50MB of data (setting the heap to
10GB!) we are still receiving a Heap Space error from Java:

Exception in thread "main" MemoryError: Java heap space
at
$objArrayVector.add(SAX2EventRecord
er.java:254)

This is not an AxisFault. It occurs on the Client, and is a pure Java
exception. We are having a difficult time fishing for a resolution. The
server side reports nothing unusual. We know you can transmit quite large
files using Axis, and are looking for some information (Maybe some sample
code?) for doing this efficiently and protecting our precious heap.

Thanks for your time,
James



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James Crosson