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Persistent Server (Corba Orb Question)

Posted on 2002-05-25
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Last Modified: 2008-03-10
I am trying to initialize 2 orbs within the same persistent server.  One orb communicates with a remote server and uses visibroker.  The other orb is for the persistent server for the local clients on my server.  Both are running on a UNIX platform.  Currently, I can't get both orbs initialized.  Has anyone tried this before?  If so, please let me know what I am doing wrong.  Below is a code example:

//-----------------------------------
// HelloTestServer
//-----------------------------------

import java.util.Properties;
import org.omg.CORBA.Object;
import org.omg.CORBA.ORB;
import org.omg.CosNaming.NameComponent;
import org.omg.CosNaming.NamingContextExt;
import org.omg.CosNaming.NamingContextExtHelper;
import org.omg.CORBA.Policy;
import org.omg.PortableServer.POA;
import org.omg.PortableServer.*;
import org.omg.PortableServer.Servant;

public class HelloTestServer {

  public static void main(String args[]) {
    try{

      // set far away orb properties
      Properties p = new Properties();
      p.put("org.omg.CORBA.ORBClass", "com.inprise.vbroker.orb.ORB");
      p.put("org.omg.CORBA.ORBSingletonClass", "com.inprise.vbroker.orb.ORB");
      p.put("SVCnameroot", "FARAWAY");
      p.put("ORBagentAddr", "1.2.3.4");

      System.out.println("Set properties for far away orb ...");

      // Set local orb properties
      Properties w = new Properties();
      w.put("org.omg.CORBA.ORBInitialHost", "localhost");
      w.put("org.omg.CORBA.ORBInitialPort", "1050");

      System.out.println("Set properties for local orb ...");

      // create and initialize the ORB - Local
      ORB orb = ORB.init(args, w);

      System.out.println("Initialized local orb ...");

      // create and initialize the ORB - far away
      ORB farawayorb = ORB.init(args, p);

      System.out.println("Initialized far away orb ...");

      // Instantiate the servant
      HelloTestServant hellotestServant = new HelloTestServant(orb, farawayorb);

      System.out.println("Instantiated Local servant ...");
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Question by:Marissa_D
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by:girionis
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 What is the error message you are getting?
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Author Comment

by:Marissa_D
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Currently, I am getting the following error:

FATAL:  application error: Exception: null
________________________________________________

However, I was getting the following before I started using the "Properties" object:

org.omg.CORBA.INITIALIZE: can't instantiate default ORB implementation com.inprise.vbroker.orb.ORB  vmcid: 0x0  minor code: 0  completed: No

If it helps, I got both orbs initialized and communicating with each other in a transient server.  However, I need both initialized in a persistent server.
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Expert Comment

by:girionis
Comment Utility
 Hmmm, firstly I have to tell you that I am not a CORBA expert. All my knwoledge about CORBA comes only from a three-months period when I was doing some in one of my previous jobs.

  With regards to your problem it seems to me that it has to do with the ORB that inprise uses by default. What I am thinking is that the VM cannot find it on startup and then it has to use the default Sun ORB, which might not be fully compliant with the vbroker's ORB.

  What I suggest you do is to make sure the vbroker's ORB is indeed in your classpath and copy your orb.properties file in your JAVA_HOME/jre/lib folder.

  Hope it helps.
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Author Comment

by:Marissa_D
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I just checked the Borland site and there is a compatability issue with j2sdk1.4.0 and Visibroker.  That version of Java is not supported.  Therefore, it will explain some of the problems that I have been having.
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girionis earned 300 total points
Comment Utility
 Maybe if you use jdk1.3 it will solve the problem.
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Author Comment

by:Marissa_D
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I switched to a supported version of java and that fixed my problem.
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by:girionis
Comment Utility
 Hi Marissa thank you for the points. I am glad I helped :-)
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