Help on accessing table available in SAP R/3 System

Question

Hi All
A day before I had posted a question regarding the accessing of tables available in SAP R/3 system. 
I got the following code as reply.  This code is working fine. 
But in the below example, the QUERY_TABLE IS BSAUTHORS. 
In my case, the QUERY_TABLE is VBKD(Sales Document Table). 
When I replace the table name with VBKD in place of BSAUTHORS, I am getting the following error:
ERROR  BEGIN----
com.sap.mw.jco.JCO$AbapException: (126) DATA_BUFFER_EXCEEDED: Selected fields do not fit into structure DATA
     at com.sap.mw.jco.JCO$Function.getException(JCO.java:17978)
     at com.sap.mw.jco.JCO$Client.execute(JCO.java:3143)
     at com.insync.JCO.UpdateSalesOrder.main(UpdateSalesOrder.java:34)
ERROR END----
Can anyone please give me a solution for this?
Thanks in Advace,
Vijay.
**********************Code**********************
import com.sap.mw.jco.*;
public class JcoTest {
private static JCO.Client theConnection;
private static IRepository theRepository;
public static void main(String[] args) {
  createConnection();
  retrieveRepository(); 
  try {
  JCO.Function function = getFunction("RFC_READ_TABLE");
  JCO.ParameterList listParams = function.getImportParameterList();
  listParams.setValue("BSAUTHORS", "QUERY_TABLE");
//listParams.setValue("VBKD", "QUERY_TABLE"); // ERROR
  theConnection.execute(function);
  JCO.Table tableList = function.getTableParameterList().getTable("DATA");
  if (tableList.getNumRows() > 0) {
   do {
    for (JCO.FieldIterator fI = tableList.fields();
      fI.hasMoreElements();)
      JCO.Field tabField = fI.nextField();
      System.out.println(tabField.getName()
           + ":t" +
           tabField.getString());
     System.out.println("n");
   while (tableList.nextRow() == true);
  catch (Exception ex) {
   ex.printStackTrace();

Answer 1

I am also facing the same issue when using 4-way CPU for processing RFC_READ_TABLE I get following error (Error: DATA_BUFFER_EXCEEDED: Selected fields do not fit into structure DATA) .
when I set the NO_DATA=X in RFC_READ_TABLE then returned data object is empty , is this expected behavior  ? if yes then how do we extract data without getting this error .Help is greatly appreciated