One EJB object accessed by two clients.

One client access a EJB object another client access the same EJB
object, when the first client releases the ejb object, then second
client loses data or gets null.
Any body knows what is happening?
Thanks

hey,
is this with StatefulSession Bean. I too am experiencing the same problem. When two users are trying to access the same bean the same time, one is returing null. This being a UserSession Bean, one user is getting the session object as null..
Can anyone answer this problem....
cheers,
prasad.

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Are you using JDeveloper? If yes then go to File|New->Snippets
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Regards,
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Manish Patel (guest) wrote:
: I want to deploy/access the EJB on the Oracle 8i server from
the
: Client Machine. From the Oracle 8i server machine i am able to
: deploy and access the EJB
: When i am trying to deploy/access the EJB i am getting the
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Message was edited by:
Sasha
Message was edited by:
Sasha

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However, when I go to the web deployment descriptor page of 'titi.ear/web.war' the I click on 'reference' tab, then 'Add' button I can only see the EJB from 'titi.ear'.
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The source code is approximately:
ic = new InitialContext(env);
where env is>
{java.naming.provider.url=ormi://localhost:23791/CatalogosWeb, java.naming.factory.initial=com.evermind.server.rmi.RMIInitialContextFactory, java.naming.security.principal=admin, java.naming.security.credentials=welcome}
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user496903 ,
When you need to perform lookups within the same OC4J container, you don't use RMIInitialContextFactory. Instead, you should use the new InitialContext() constructor, that defaults the initial context factory property to (if my memory doesn't fail) ApplicationInitialContextFactory...
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Error when One EJB calls anothe EJB

Hi,
I got the following error when I use one EJB call another EJB in OAS 4.0.8.1, the code is developed in JDeveloper 3.0/Win NT 4.0/SP5.
Can anyone give me some ideas? or is there any samples in this case?
Thanks a lot!
Creating an initial context
Looking for the EJB published as 'APP/APPEJB'
Creating a new EJB instance
Calling APPEJB methods...
CORBA: org.omg.CORBA.BAD_OPERATION: ; nested exception is:
org.omg.CORBA.BAD_OPERATION:
java.rmi.ServerException: CORBA: org.omg.CORBA.BAD_OPERATION: ; nested exception is:
org.omg.CORBA.BAD_OPERATION:
at javax.rmi.oas.corba.CorbaRemoteExceptionHelperValue.OBVObjFrom(Compiled Code)
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at TwoEJB.TwoEJBClient.main(Compiled Code)
null

Home handle is an object that identifies an enterprise bean. A client may serialize the handle, and then later deserialize it to obtain a reference to the enterprise bean.
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import javax.ejb.EJBHome;
import javax.ejb.HomeHandle;
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oos.writeObject( handle );
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aHome = theHandle.getEJBHome();
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http://java.sun.com/blueprints/corej2eepatterns/Patterns/TransferObject.html
Rgds,
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How to Call one EJB from another

Hi all
I am trying to call one EJB in one system from another EJB residing on diferent system...
Both are Stateless session beans ...
I can't use No-args Intialcontext() as i need to specify the Ip address of other system to be looked up.....
So i am using properties Dorg.omg.CORBA.ORBInitlalHost....
But its not looking up..Its telling not bound...But i called it from standalone client remotely...
Am i wrong..?
I hope I am in right path....
I hope ill get reply as fast as possible...
Gopal V

Hi ken Thanks for replying....
Ya i packed it as a jar (using Export tool in Eclipse3.2)....
I am using SUN AS 9.....
I packed bean1 and bean2 as two different jars in the same domain...
Here is my code...
Bean1:
@Stateless(mappedName="ejb/Second")
public class SecondIMPL implements SecondRemote {
     public FirstRemote obj;
     public String connect() {
          try{
               InitialContext ctx= new InitialContext();
               FirstRemote obj =(FirstRemote)ctx.lookup("ejb/First");
               System.out.println("Client :"+obj.bMethod());
          }catch(Exception e){
               e.printStackTrace();
          return "Check server Log";
}Bean2 :
@Stateless(mappedName="ejb/First")
public class FirstIMPL implements FirstRemote {
     public String bMethod() {
          return "From First Bean";
Client:
public static void main(String[] args) {
          try{
               InitialContext ctx= new InitialContext();
               SecondRemote obj =(SecondRemote)ctx.lookup("ejb/Second");
               System.out.println("Client :"+obj.connect());
          }catch(Exception e){
               e.printStackTrace();
Here is my Stack Trace...
[#|2007-05-24T18:35:17.214+0530|WARNING|sun-appserver-pe9.0|javax.enterprise.system.stream.err|_ThreadID=18;_ThreadName=p: thread-pool-1; w: 19;_RequestID=bb4848e7-829a-421d-a560-93659898eb02;|
javax.naming.NamingException: ejb ref resolution error for remote business interfacecom.SecondRemote[Root exception is java.lang.ClassNotFoundException: com.SecondRemote]
     at com.sun.ejb.EJBUtils.lookupRemote30BusinessObject(EJBUtils.java:350)
     at com.sun.ejb.containers.RemoteBusinessObjectFactory.getObjectInstance(RemoteBusinessObjectFactory.java:61)
     at javax.naming.spi.NamingManager.getObjectInstance(NamingManager.java:304)
     at com.sun.enterprise.naming.SerialContext.lookup(SerialContext.java:314)
     at javax.naming.InitialContext.lookup(InitialContext.java:351)
     at com.FirstBean.rediff(FirstBean.java:16)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     at java.lang.reflect.Method.invoke(Method.java:585)
     at com.sun.enterprise.security.application.EJBSecurityManager.runMethod(EJBSecurityManager.java:1050)
     at com.sun.enterprise.security.SecurityUtil.invoke(SecurityUtil.java:165)
     at com.sun.ejb.containers.BaseContainer.invokeTargetBeanMethod(BaseContainer.java:2766)
     at com.sun.ejb.containers.BaseContainer.intercept(BaseContainer.java:3847)
     at com.sun.ejb.containers.EJBObjectInvocationHandler.invoke(EJBObjectInvocationHandler.java:190)
     at com.sun.ejb.containers.EJBObjectInvocationHandlerDelegate.invoke(EJBObjectInvocationHandlerDelegate.java:110)
     at $Proxy36.rediff(Unknown Source)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     at java.lang.reflect.Method.invoke(Method.java:585)
     at com.sun.corba.ee.impl.presentation.rmi.ReflectiveTie._invoke(ReflectiveTie.java:121)
     at com.sun.corba.ee.impl.protocol.CorbaServerRequestDispatcherImpl.dispatchToServant(CorbaServerRequestDispatcherImpl.java:650)
     at com.sun.corba.ee.impl.protocol.CorbaServerRequestDispatcherImpl.dispatch(CorbaServerRequestDispatcherImpl.java:193)
     at com.sun.corba.ee.impl.protocol.CorbaMessageMediatorImpl.handleRequestRequest(CorbaMessageMediatorImpl.java:1705)
     at com.sun.corba.ee.impl.protocol.CorbaMessageMediatorImpl.handleRequest(CorbaMessageMediatorImpl.java:1565)
     at com.sun.corba.ee.impl.protocol.CorbaMessageMediatorImpl.handleInput(CorbaMessageMediatorImpl.java:947)
     at com.sun.corba.ee.impl.protocol.giopmsgheaders.RequestMessage_1_2.callback(RequestMessage_1_2.java:178)
     at com.sun.corba.ee.impl.protocol.CorbaMessageMediatorImpl.handleRequest(CorbaMessageMediatorImpl.java:717)
     at com.sun.corba.ee.impl.transport.SocketOrChannelConnectionImpl.dispatch(SocketOrChannelConnectionImpl.java:473)
     at com.sun.corba.ee.impl.transport.SocketOrChannelConnectionImpl.doWork(SocketOrChannelConnectionImpl.java:1270)
     at com.sun.corba.ee.impl.orbutil.threadpool.ThreadPoolImpl$WorkerThread.run(ThreadPoolImpl.java:479)
Caused by: java.lang.ClassNotFoundException: com.Second
     at com.sun.enterprise.loader.EJBClassLoader.findClassData(EJBClassLoader.java:701)
     at com.sun.enterprise.loader.EJBClassLoader.findClass(EJBClassLoader.java:614)
     at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
     at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
     at com.sun.ejb.EJBUtils.getBusinessIntfClassLoader(EJBUtils.java:568)
     at com.sun.ejb.EJBUtils.lookupRemote30BusinessObject(EJBUtils.java:320)
     ... 31 more
|#]

Transparent Tunneling and Local Lan Access via VPN Client

Remote users using Cisco VPN 4.2 connect successfully to a Cisco Pix 515 (ver. 6.3). The client is configured to allow Transparent Tunneling and Local Lan access, but once connected to the Pix, these two options are disabled. What configuration changes are required on the Pix to enable these options? Any assistance will be greatly appreciated.
Mike Bowyer

Hi Mike,
"Transparent Tunneling" and "Local Lan Access" are two different things. "Transparent Tunneling" is dealing with establishing an IPSec Tunnel even if a NAT device is between your client and the VPN-Headend-Device. "Local LAN Access" is dealing with access to devices in the LAN your VPN-Client-Device is connected to.
What do you mean exactly with "disabled once the connection is made" ?
You can check the local LAN Access by having a look at the Route-Table of the VPN-Client:
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Are any local LAN routes displayed when your are connected ?
And - always remember two important restrictions the Online Help of the VPN-Client is mentioning:
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Carsten
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One EJB object accessed by two clients.

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