Error connecting to JServer/EJB

Question

Hi all,
I've successfully deployed a BC4J Application Module as EJB Session Bean into Oracle8i 8.1.6. The test on this Application Module works fine.
The client code that calls the EJB is:
package ricercalista.client;
import java.util.Hashtable;
import javax.naming.*;
import oracle.jbo.*;
import ricercalista.client.ejb.LoginModuleEJBClient;
import oracle.jbo.client.remote.ejb.*;
import oracle.jbo.common.remote.*;
import oracle.jbo.common.remote.ejb.*;
import ricercalista.common.ejb.*;
import ricercalista.common.*;
public class LoginClient {
final String AMDefName = "ricercalista.LoginModule";
final String username = "omero";
final String password = "omero";
final String dbUrl = "jdbc:oracle:thin:omero/omero@localhost:1521:OMERO";
public LoginClient() {
try {
Hashtable env = new Hashtable(10);
env.put(Context.INITIAL_CONTEXT_FACTORY, JboContext.JBO_CONTEXT_FACTORY);
env.put(JboContext.DEPLOY_PLATFORM, JboContext.PLATFORM_ORACLE8I);
env.put(JboContext.SECURITY_PRINCIPAL, username);
env.put(JboContext.SECURITY_CREDENTIALS, password);
env.put(JboContext.HOST_NAME, "bacco08.csr.unibo.it");
env.put(JboContext.CONNECTION_PORT, "2481");
env.put(JboContext.ORACLE_SID, "OMERO");
env.put(JboContext.APPLICATION_PATH, "test/omero/ejb");
Context ic = new InitialContext(env);
LoginModuleHome home = (LoginModuleHome) ic.lookup(AMDefName);
LoginModuleEJBClient myejb = (LoginModuleEJBClient) home.create();
myejb.getTransaction().connect(dbUrl, username, password);
myejb.setUser("turronic", "chris");
System.out.println((String) myejb.getCognome());
System.out.println((String) myejb.getNome());
ricercalista.UserProfile up = myejb.getUserProfile();
for (int i = 0; i < up.size(); i++) {
System.out.println("dominio = " + up.getCodeDomain(i) + " grado = " + up.getInterestDegree(i));
myejb.getTransaction().disconnect();
myejb.remove();
catch (java.rmi.RemoteException re) {
System.out.println("Remote exception in creating " + AMDefName);
re.printStackTrace();
catch (javax.ejb.CreateException ce) {
System.out.println("Unable to create ejb " + AMDefName);
ce.printStackTrace();
catch (NamingException ne) {
System.out.println("Unable to find application " + AMDefName);
ne.printStackTrace();
catch (oracle.jbo.ApplicationModuleCreateException e) {
System.out.println("Unable to create application module " + AMDefName);
e.printStackTrace();
public static void main(String[] args) {
new LoginClient();
When I run this client, an error occurs on the statement:
LoginModuleHome home = (LoginModuleHome) ic.lookup(AMDefName);
The error is:
System Error: javax.naming.NamingException: Unknown reasons. Root exception is java.lang.ClassNotFoundException: ricercalista.common.ejb.LoginModuleHomeHelper
System Error: void oracle.jbo.client.remote.corba.aurora.AuroraApplicationModuleHome.initRemoteHome() (AuroraApplicationModuleHome.java:167)
System Error: void oracle.jbo.client.remote.corba.aurora.AuroraApplicationModuleHome.<init>(oracle.jbo.JboContext, java.lang.String) (AuroraApplicationModuleHome.java:75)
System Error: oracle.jbo.common.JboHome oracle.jbo.client.remote.corba.aurora.AuroraInitialContext.createJboHome(java.lang.String) (AuroraInitialContext.java:47)
System Error: java.lang.Object oracle.jbo.common.JboInitialContext.lookup(java.lang.String) (JboInitialContext.java:72)
System Error: java.lang.Object javax.naming.InitialContext.lookup(java.lang.String) (InitialContext.java:349)
System Error: void ricercalista.client.LoginClient.<init>() (LoginClient.java:51)
System Error: void ricercalista.client.LoginClient.main(java.lang.String[]) (LoginClient.java:89)
Have you ever got this error? Is the client code right?
Thanks a lot!

Answer 1

java.lang.ClassNotFoundException:ricercalista.common.ejb.LoginModuleHomeHelper
It's saying Call Not Found and I'm guessing that ricercalista.common.ejb.LoginModuleHomeHelper
is your class? Did your classes(jar file) get to the server in the right place? to be found? Is the Classpath set?
I'm not a EJB programmer though.