Calling an RFC from an EJB over an Enterprise Connector

Question

Hi all,
I would like to call an RFC enabled Function Modul (FuBa) from a BW-System over an EJB in a Web AS environment bei  passing SAP Logon Ticket.
To achive this goal, i've generated proxy classes (Enterprise Connector) via NWDS .
If i call enterprise connector localy from an example class (See attachment), it works.
BUT
if I use the same Code within an EJB, bei correct deployment , it doesn't work. I become an exception, during to establish a connection
What is wrong here ?
What do i have to do in an a EJB-Environment to use an Enterprise Connector ?
Best Regards
A. Büyükyilmaz
ATTACHMENT
Created on 13.02.2007
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package de.xxx.test.ep.main;
import java.sql.Date;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import com.sap.aii.proxy.framework.core.ApplicationFaultException;
import com.sap.aii.proxy.framework.core.SystemFaultException;
import com.sap.mw.jco.JCO;
import de.xxx.yyy.zzz.connectivity.fuba.Anlage_PortType;
import de.xxx.yyy.zzz.connectivity.fuba.Zge_Gerel_Data_For_Kne_Kn_Input;
import de.xxx.yyy.zzz.connectivity.fuba.Zge_Gerel_Data_For_Kne_Kn_Output;
@author pg4011
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Window>Preferences>Java>Code Generation>Code and Comments
public class GetAnlage {
private JCO.Client mConnection = null;
public boolean connectToSAP(
String client,
String user,
String passwd,
String lang,
String appServer,
String sysNo) {
try {
mConnection =
JCO.createClient(client, user, passwd, lang, appServer, sysNo);
mConnection.connect();
} catch (Exception e) {
e.printStackTrace();
return false;
return true;
public static void main(String[] args) {
GetAnlage anlage = new GetAnlage();
if (anlage.connectToSAP ("50", "abc", "pwd", "DE", "system", "00")) {
System.out.println("Anlage wird erstellt");
anlage.getData();
System.out.println("");
System.exit(0);
private void getData() {
// ImportParameter
Zge_Gerel_Data_For_Kne_Kn_Input input = new Zge_Gerel_Data_For_Kne_Kn_Input();
// Hole proxy Instance mit JCO.Client instance
Anlage_PortType proxy = new Anlage_PortType();
proxy.messageSpecifier.setJcoClient(mConnection);
Zge_Gerel_Data_For_Kne_Kn_Output output = new Zge_Gerel_Data_For_Kne_Kn_Output();
input.setI_Bp_Nr("7901514764");
input.setI_View("03");
input.setI_Spras("DE");
Date stichtag = new Date(2006, 9, 22);
input.setI_Stichtag(stichtag);
//Rufe RFC auf
try {
output = proxy.zge_Gerel_Data_For_Kne_Kn(input);
String s = "";
System.out.println(s);
} catch (SystemFaultException e) {
e.printStackTrace();
} catch (ApplicationFaultException e) {
e.printStackTrace();

Answer 1

Hi Rajesh,
it's realy funny.  Although, i inserted som trace outputs behind of catch-statement, i do not see any information about exception in application log.
but i see, that the method becomes correct inputparameters and i see it try to make a connection. After that, it end without a trace.
Best Regards
Ahmet