WLS 7 - IIOP - Remote interface with parameterless method

Hi all,
I am developping EJBs which are accessed by clients with IIOP.
Every method without any paramter I put in the remote interface do not
work with IIOP but are ok when I call with T3.
Note that all other methods which have parameters work properly.
The EJB (Stateless SessionBean) is well deployed and installed on the
server,
ejbc gives no error.
The resulting stacktrace on the client is :
java.rmi.RemoteException: CORBA BAD_OPERATION 0 No; nested exception
is:
org.omg.CORBA.BAD_OPERATION: minor code: 0 completed: No
java.rmi.RemoteException: CORBA BAD_OPERATION 0 No; nested exception
is:
org.omg.CORBA.BAD_OPERATION: minor code: 0 completed: No
org.omg.CORBA.BAD_OPERATION: minor code: 0 completed: No
at java.lang.Class.newInstance0(Native Method)
at java.lang.Class.newInstance(Class.java:237)
at com.sun.corba.se.internal.iiop.ReplyMessage.getSystemException(ReplyMessage.java:93)
at com.sun.corba.se.internal.iiop.ClientResponseImpl.getSystemException(ClientResponseImpl.java:83)
at com.sun.corba.se.internal.corba.ClientDelegate.invoke(ClientDelegate.java:204)
at org.omg.CORBA.portable.ObjectImpl._invoke(ObjectImpl.java:459)
at ch.vd.collectivitespkg._Collectivites_Stub.getTypesCollectivites(Unknown
Source)
at ch.vd.testpkg.CollectivitesTestClient.getTypesCollectivites(CollectivitesTestClient.java:467)
at ch.vd.testpkg.CollectivitesTestClient.testRemoteCallsWithDefaultArguments(CollectivitesTestClient.java
:502)
at ch.vd.testpkg.CollectivitesTestClient.main(CollectivitesTestClient.java:545)
At the same time only one line is added to the server log :
####<Jun 12, 2003 4:33:52 PM CEST> <Info> <IIOP> <****> <Server>
<ExecuteThread: '14' for queue: 'default'> <kernel identity> <>
<002002> <Failed to parse method name getTypesCollectivites.>
FYI : I am using Jbuilder 7.0 with JDK 1.3.1-b24 and WLS 7.0 SP1.
Thanks in advance for your help.
Chris.

[email protected] (ChrisFR) writes:
Here is the fragment of the (new-)remote interface concerned :
public Collection getTypesCollectivites(int type) throws
RemoteException, BusinessException;
BusinessException is not a runtime exception, it extends Exception.
Where can I have a look on bugfixes in SP2 and SP3 ?Yes, we just fixed this. The CR is CR108317, if you go through support
you will be able to get a patch. This will appear in sp3.
andy

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avax.faces.el.EvaluationException: oracle.jbo.JboException: JBO-29000: Unexpected exception caught: oracle.jbo.JboException, msg
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import java.sql.*;
import java.util.*;
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import oracle.jbo.*;
import oracle.jbo.client.remote.ejb.*;
import oracle.jbo.common.remote.*;
import oracle.jbo.common.remote.ejb.*;
import oracle.jdeveloper.html.*;
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import bestdata.common.ejb.*;
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It doesnt cause any errors. However, how must I call methods? The public interface RemoteBestdataModule has no such methods:
void doNothingNoArgs();
void doNothingOneArg(java.lang.String astr);
void setCertificate(java.lang.String userName, java.lang.String userPassword);
java.lang.String getPermission();
Instead of that it has the following methods:
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oracle.jbo.common.remote.PiggybackReturn doNothingOneArg(byte[] _pb, java.lang.String astr) throws oracle.jbo.common.remote.ejb.RemoteJboException, java.rmi.RemoteException;
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oracle.jbo.common.remote.PiggybackReturn setCertificate(byte[] _pb, java.lang.String userName, java.lang.String userPassword) throws oracle.jbo.common.remote.ejb.RemoteJboException, java.rmi.RemoteException;
oracle.jbo.common.remote.PiggybackReturn getPermission(byte[] _pb) throws oracle.jbo.common.remote.ejb.RemoteJboException, java.rmi.RemoteException;
I cannot call those methods. I can see how they are called in BestdataModuleEJBClient.java file:
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try {
oracle.jbo.common.remote.PiggybackReturn _pbRet = mRemoteAM.doNothingNoArgs(getPiggyback());
processPiggyback(_pbRet.mPiggyback);
if (_pbRet.isReturnStreamValid()) {
return;
catch (oracle.jbo.common.remote.ejb.RemoteJboException ex) {
processRemoteJboException(ex);
catch (java.rmi.RemoteException ex) {
processRemoteJboException(ex);
throw new oracle.jbo.JboException("Marshall error");
However, I cannot call getPiggyback() function! It is a protected method, it is available to the class BestdataModuleEJBClient which extends EJBApplicationModuleImpl, but it is unavailable to my class BestClients which extends Object and is intended to extend oracle.jdeveloper.html.WebBeanImpl!
It seems to me that I mustnt use RemoteBestdataModule interface directly. Instead of that I must use the public class BestdataModuleEJBClient that extends EJBApplicationModuleImpl and implements BestdataModule interface. It contains all methods required without additional arguments (see just above). However, how must I create an object of BestdataModuleEJBClient class? That is a puzzle. Besides my custom methods the class has only two methods:
protected bestdata.common.ejb.RemoteBestdataModule mRemoteAM;
/*This is the default constructor (do not remove)*/
public BestdataModuleEJBClient(RemoteApplicationModule remoteAM) {
super(remoteAM);
mRemoteAM = (bestdata.common.ejb.RemoteBestdataModule)remoteAM;
public bestdata.common.ejb.RemoteBestdataModule getRemoteBestdataModule() {
return mRemoteAM;
It looks like the remote application module must already exist! In despair I tried to put down something of the kind at the client side:
RemoteBestdataModule remoteInterface = homeInterface.create();
BestdataModuleEJBClient dm = new BestdataModuleEJBClient(remoteInterface);
dm.doNothingNoArgs();
Of course, it results in an error.
System Output: null
System Error: java.lang.NullPointerException
System Error: oracle.jbo.common.PiggybackOutput oracle.jbo.client.remote.ApplicationModuleImpl.getPiggyForRemovedObjects(oracle.jbo.common.PiggybackOutput) (ApplicationModuleImpl.java:3017)
System Error: byte[] oracle.jbo.client.remote.ApplicationModuleImpl.getPiggyfront(boolea
System Error: n) (ApplicationModuleImpl.java:3059)
System Error: byte[] oracle.jbo.client.remote.ApplicationModuleImpl.getPiggyback() (ApplicationModuleImpl.java:3195)
System Error: void bestdata.client.ejb.BestdataModuleEJBClient.doNothingNoArgs() (BestdataModuleEJBClient.java:33)
System Error: void bes
System Error: tclients.BestClients.main(java.lang.String[]) (BestClients.java:76)
I have studied a lot of documents in vain. I have found only various senseless discourses:
"Use the Application Module Wizard to make the Application Module remotable and export the method. This will generate an interface for HrAppmodule (HrAppmodule.java in the Common package) which contains the signature for the exported method promoteAllEmps(). Then, deploy the Application Module. Once the Application Module has been deployed, you can use the promoteAllEmps() method in your client-side programs. Calls to the promoteAllEmps() method in client-side programs will result in calls to the promote() method in the application tier."
However, I have failed to find a single line of code explaining how it should be called.
Can anybody help me?
Best regards,
Svyatoslav Konovaltsev,
[email protected]
null

Dear Steven,
1. Thank you very much. It seems to me that the problem is solved.
2. "I logged into Metalink but it wants me to put in both a tar number and a country name to see your issue." It was the United Kingdom, neither the US nor Russia if you mean my issue.
I reproduce the text to be written by everyone who encounters the same problem:
package bestclients;
import java.util.Hashtable;
import javax.naming.*;
import oracle.jbo.*;
public class BestdataHelper {
public static ApplicationModule createEJB()
throws ApplicationModuleCreateException {
ApplicationModule applicationModule = null;
try {
Hashtable environment = new Hashtable(8);
environment.put(Context.INITIAL_CONTEXT_FACTORY, JboContext.JBO_CONTEXT_FACTORY);
environment.put(JboContext.DEPLOY_PLATFORM, JboContext.PLATFORM_EJB);
environment.put(Context.SECURITY_PRINCIPAL, "TESTER");
environment.put(Context.SECURITY_CREDENTIALS, "TESTER");
environment.put(JboContext.HOST_NAME, "localhost");
environment.put(JboContext.CONNECTION_PORT, new Integer("2481"));
environment.put(JboContext.ORACLE_SID, "ORCL");
environment.put(JboContext.APPLICATION_PATH, "/test/TESTER/ejb");
Context ic = new InitialContext(environment);
ApplicationModuleHome home = (ApplicationModuleHome)ic.lookup("bestdata.BestdataModule");
applicationModule = home.create();
applicationModule.getTransaction().connect("jdbc:oracle:kprb:@");
applicationModule.setSyncMode(ApplicationModule.SYNC_IMMEDIATE);
catch (NamingException namingException) {
throw new ApplicationModuleCreateException(namingException);
return applicationModule;
package bestclients;
import bestdata.common.*;
import certificate.*;
public class BestClients extends Object {
public static void main(String[] args) {
BestdataModule bestdataModule = (BestdataModule)BestdataHelper.createEJB();
Certificate aCertificate = new Certificate("TESTER", "TESTER");
//calling a custom method!!
bestdataModule.passCertificate(aCertificate);
Thank you very much,
Best regards,
Svyatoslav Konovaltsev.
[email protected]
null

Multiple inheritance in remote interfaces for EJB 3.0 session beans on Webl

Hi All,
We started migration from EJB 2.1(WLS 8.1) to EJB 3.0(WLS 10.3.2) and identified few serious problems. One of them is related with multiple business interfaces inheritance. I wrote simple example that presents point of the problem.
we have session bean AImpl:
+@Stateless(name="A")+
+@Remote({A.class})+
+@TransactionAttribute(TransactionAttributeType.REQUIRED)+
+public class AImpl implements A {+
+@Override+
+public void writeA() {+
System.out.println("A");
+}+
+@Override+
+public void writeB() {+
System.out.println("B");
+}+
+@Override+
+public void writeC() {+
System.out.println("C");
+}+
+}+
with remote interface A:
+@Remote+
+@JNDIName(A.JNDI_NAME)+
+public interface A extends B, C {+
public static String JNDI_NAME = "A_JNDI_NAME";
void writeA();
+}+
As you can see A extends B, and C. Definition of both interfaces is very simple:
+public interface B {+
void writeB();
+}+
+public interface C {+
void writeC();
+}+
Everything looks nice until we want to invoke some method on AImpl bean. For above implementation code:
A a = ctx.lookup(A. JNDI_NAME);
a.writeA();
a.writeB();
a.writeC();
writes down ”A \n B” and throws exception:
caused by: java.lang.NoSuchMethodException: pl.gov.arimr.zszik.bazowe.slowniki.ejb.A_vt0zts_AImpl_1032_WLStub.*writeC()*
at java.lang.Class.getMethod(Class.java:1605)
at weblogic.ejb.container.internal.RemoteBusinessIntfProxy.getTargetMethod(RemoteBusinessIntfProxy.java:165)
at weblogic.ejb.container.internal.RemoteBusinessIntfProxy.invoke(RemoteBusinessIntfProxy.java:57)
so.. in stub generated by WLS there is no method from interface C ! What more interesting after small change in interface A rely on change in interface implementation order from B, C to C, B (+public interface A extends C, B {+) server writes down only A and I have stack like below:
Caused by: java.lang.NoSuchMethodException: pl.gov.arimr.zszik.bazowe.slowniki.ejb.A_vt0zts_AImpl_1032_WLStub.*writeB()*
at java.lang.Class.getMethod(Class.java:1605)
at weblogic.ejb.container.internal.RemoteBusinessIntfProxy.getTargetMethod(RemoteBusinessIntfProxy.java:165)
at weblogic.ejb.container.internal.RemoteBusinessIntfProxy.invoke(RemoteBusinessIntfProxy.java:57)
After this experience I came up with suspicion that Weblogic 10.3 does not support inheritance from multiple interfaces in one “generation”. Instead of that it takes only the first interface from the list.
Does anybody have some experience with such a situation? maybe someone have an idea how to work around this problem?

This is Not Supported in WebLogic that the Remote Interface extends other Interfaces. Because Annotation Processor just looks up inside the implemented interface methods. The actual interface which is Implemented by the Bean Class. So the Methods declared inside the Interface B and Interface C will be ignored and will not be available as part of the generated Stubs. Thats why u are getting NoSuchMethodError.
You can even contact Oracle Support on this...there are 3-4 Cases on it. And the Solution is Work As Designed.
Workaround is : edit your interface A as following
Declare all the Business Methods only in the Remote Interface and not inside it's Super Interfaces.
Example:
@Stateless(name="A")
@Remote({A.class})
@TransactionAttribute(TransactionAttributeType.REQUIRED)
public class AImpl implements A {
@Override
public void writeA() {
System.out.println("A");
@Override
public void writeB() {
System.out.println("B");
@Override
public void writeC() {
System.out.println("C");
@Remote
@JNDIName(A.JNDI_NAME)
public interface A extends B, C {
public static String JNDI_NAME = "A_JNDI_NAME";
void writeA();
void writeB();
void writeC();
Thanks
Jay SenSharma
http://jaysensharma.wordpress.com (WebLogic Wonders Are Here)

How to lookup the remote interface in JNDI of the cluster (glassfish)

I have write a simple sessionbean:
package authority;
import javax.ejb.Stateless;
* Session Bean implementation class LoginSessionBean
@Stateless
public class LoginSessionBean implements LoginSessionBeanRemote, LoginSessionBeanLocal {
     * Default constructor.
    public LoginSessionBean() {
        // TODO Auto-generated constructor stub
    @Override
    public boolean login(String name, String password)
        boolean result = false;
        System.out.println("User: " + name + " is login with password: " + password);
        return result;
    @Override
    public LoginSessionBeanRemote create()
        // TODO Auto-generated method stub
        return this;
}And I write a simple client to test it.
package test;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import javax.rmi.PortableRemoteObject;
import authority.LoginSessionBean;
import authority.LoginSessionBeanRemote;
public class SessionBeanTestClient
    public static void main(String[] args)
        try
            InitialContext context = new InitialContext();
            Object obj = context.lookup(LoginSessionBean.class.getName());
            LoginSessionBeanRemote loginService = (LoginSessionBeanRemote)PortableRemoteObject.narrow(obj, LoginSessionBeanRemote.class);
            loginService.login("Jason", "password");
        catch (NamingException e)
            // TODO Auto-generated catch block
            e.printStackTrace();
}And it is OK, but after I deploy the sessionbean into a cluster with two instances on local host, it can not find the remote interface:
javax.naming.NameNotFoundException: authority.LoginSessionBean not found
     at com.sun.enterprise.naming.TransientContext.doLookup(TransientContext.java:216)Is it different for cluster (for IIOP port?), I want to test the HA solution, how could I start it?

Please look at http://otn.oracle.com/tech/java/oc4j/htdocs/oc4j-how-to.html. There is a How-To on local interface.
thanks
Debu

Enhancement request: Remote interface java file generation

Problem:
In release 9.0.3, If you want to write a method that is suppossed to be exposed in the remote interface, you have to first right click on the ejb-jar.xml's appropriate EJB name node and then add the method, specify the argument types (say about 25 in number in a small width textbox), return type, etc and check the check box 'Expose in remote interface'. Then only remote interface's java source gets updated and only after doing all this can you actually sit down to write the business logic in that method. If you first code the method and then try to add the same, it gives an error saying "duplicate method exists"
Suggestion:
The similiar feature in release 9.0.2 was much better and flexible as it allowed the generation of remote interface source after coding the actual method in the EJB source. You can first write the method and then expose it in the interface by just choosing it from a method browser and opting for exposing it in the remote interface. You donot have to write the name and number of arguments like we have to currently do in the 9.0.3 release.
(1) Actually, all public methods in the EJB source should by default be exposed in the remote interface because EJB are supposed to be used by other EJBs and JSPs only and all methods that are public but not exposed in the remote interface should actually be private or protected.
(2) Leave it up to the developer to edit the remote interface
(3) When the EJB source file is changed (public methods changed) compiled the remote interface should also be updated automatically. Why? already you have provision to change the remote interface source, so just dump all the public methods in the remote interface source when the EJB source is compiled.
(4) Ditto for EJB Homes
(5) Actually whenever the developer changes and compiles the EJB source, the remote and home source should automatically be updated AND COMPILED. (Refer: Pramati Studio 3.0 SP3 :- URL: www.pramati.com )
I was very happy with the earlier option. If anybody other then the JDeveloper Team finds this interesting, please respond. A suite like developer should be more User-friendly.
And yes expect more like this from me in the future

Hi Raghu,
Thanks for the quick response. This flexiblity in Remote interface generation and choice of methods in it at any given point in the development cycle is very much desired feature.
The other thing I would like to suggest is you look at another enhancement request in my name regarding batch updates of the "web.xml" file. You will find the thread updated today i.e. on 15th September with a reply
I will shortly post one more for lack of modularity in EJB components descriptors.
My Company Four Soft Pvt. Ltd. (www.four-soft.com) is Oracle's development partner and we use and support Oracle products. They are good but naturally we would like them to be better and more User-friendly.
Thanks once again.
Amit

WLS 7 - IIOP - Remote interface with parameterless method

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