No RMI in java1.4 ?

hi!
I've just installed java2ee 1.4 beta & I simply cant find RMI in it.
How do You run Your rmi application now?

That is because it is now in the Standard edition SDK java.rmi, java.rmi.registry etc....

Similar Messages

Rmi problem after java1.4 to java1.5 migration

I have recently migrated one of my application module ( running on linux server )
from jre1.4 to jre1.5_015
Now my rmid server is at java1.5 and rmi client at java1.4 ...
when i am trying to establish rmi connections from a single client i am able
to cater to around 25 requests per second .. But the moment i start sending requests
from another client simultaneously there's a drop in request rates that are being
supported..
What i have noticed is that there are TCP connections in CLOSE_WAIT state..
and there is an increase in such connections as and when more packets are sent ...
i got the info. about TCP connections in CLOSE_WAIT via command..
netstat -an | grep 1098
where 1098 is the port where rmi registry is running...
I would like to know if there are some changes in java rmi which is causing these connections
to take a longer time to establish and hence make my tcp connections go in CLOSE_WAIT state..

Disable your firewall/security software adn try again.

RMI callback with JAVA1.5

Since the version 1.5 we have no need to distribute the stub to all the clients.
It's a great feature, but I need to perform a callback from the server to the client, in this case I need to perform a call to UnicastRemoteObject.exportObject() client-side before calling the registration method exposed by the server, and the stub of the class implementing the callback interface must be placed in the classpath of the server, is it true? Is there any other methos to perform an RMI-callback?
To be clear as much as possible I have this interface exposed by the server
public interface Services extends Remote
public Map<String, ApplicationStatus> applicationsList () throws RemoteException;
   public ApplicationStatus startApplication (String identifier) throws RemoteException;
public ApplicationStatus stopApplication (String identifier) throws RemoteException;
public int exitCode (String identifier) throws RemoteException;
   * This method, as the name says, is used by the client to register the listener to some server-side event.
   * @param callback
   * @throws RemoteException
public void registerForNotification (ExitCodeCallback callback) throws RemoteException;
}and the interface of the callback is
public interface ExitCodeCallback extends Remote
public void notifyExitCode (ExitCodeEvent event) throws RemoteException;
}On the server side I export the services in the registry
Services servicesServerSide = new MyServices();
Services services = (Services) UnicastRemoteObject.exportObject(servicesServerSide , 0);and on the client I perform a lookup of the services
Registry registry = LocateRegistry.getRegistry("192.168.0.1", 1099);
Services services = (Services) registry.lookup("SERVICES");I export my implementation of the interface
public class ClientExitCodeCallback implements ExitCodeCallback
public void notifyExitCode (ExitCodeEvent event)
    System.out.println(event.asString());
}through the code
services.registerForNotification(remoteCallback);but on the calling of this method I obtain a ServerSideException
java.rmi.ServerException: RemoteException occurred in server thread; nested exception is:
     java.rmi.UnmarshalException: error unmarshalling arguments; nested exception is:
     java.lang.ClassNotFoundException: it.sogei.jscheduler.rmi.client.ClientExitCodeCallback_Stub
     at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:325)
     at sun.rmi.transport.Transport$1.run(Transport.java:153)
     at java.security.AccessController.doPrivileged(Native Method)
     at sun.rmi.transport.Transport.serviceCall(Transport.java:149)
     at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:466)
     at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:707)
     at java.lang.Thread.run(Thread.java:595)
     at sun.rmi.transport.StreamRemoteCall.exceptionReceivedFromServer(StreamRemoteCall.java:247)
     at sun.rmi.transport.StreamRemoteCall.executeCall(StreamRemoteCall.java:223)
     at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:126)
     at java.rmi.server.RemoteObjectInvocationHandler.invokeRemoteMethod(RemoteObjectInvocationHandler.java:179)
     at java.rmi.server.RemoteObjectInvocationHandler.invoke(RemoteObjectInvocationHandler.java:132)
     at $Proxy0.registerForNotification(Unknown Source)
     at it.sogei.jscheduler.rmi.client.StartClient.main(StartClient.java:45)
Caused by: java.rmi.UnmarshalException: error unmarshalling arguments; nested exception is:
     java.lang.ClassNotFoundException: it.sogei.jscheduler.rmi.client.ClientExitCodeCallback_Stub
     at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:285)
     at sun.rmi.transport.Transport$1.run(Transport.java:153)
     at java.security.AccessController.doPrivileged(Native Method)
     at sun.rmi.transport.Transport.serviceCall(Transport.java:149)
     at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:466)
     at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:707)
     at java.lang.Thread.run(Thread.java:595)
Caused by: java.lang.ClassNotFoundException: it.sogei.jscheduler.rmi.client.ClientExitCodeCallback_Stub
     at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
     at java.security.AccessController.doPrivileged(Native Method)
     at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
     at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
     at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
     at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
     at java.lang.Class.forName0(Native Method)
     at java.lang.Class.forName(Class.java:246)
     at sun.rmi.server.LoaderHandler.loadClass(LoaderHandler.java:430)
     at sun.rmi.server.LoaderHandler.loadClass(LoaderHandler.java:165)
     at java.rmi.server.RMIClassLoader$2.loadClass(RMIClassLoader.java:620)
     at java.rmi.server.RMIClassLoader.loadClass(RMIClassLoader.java:247)
     at sun.rmi.server.MarshalInputStream.resolveClass(MarshalInputStream.java:197)
     at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1544)
     at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1466)
     at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1699)
     at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1305)
     at java.io.ObjectInputStream.readObject(ObjectInputStream.java:348)
     at sun.rmi.server.UnicastRef.unmarshalValue(UnicastRef.java:290)
     at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:279)
     ... 6 moreIs it true all of the above?

If the server gets that exception, it's because the client found and used the stub when it exported its callback, or else the server is running < 1.5.
If the client explicitly cites a port number or zero and it is running >= 1.5 and there is no stub class, it won't use it; it will create a dynamic stub class; and it will send an object of that class to the server as a parameter to the registration call. If the server is running >= 1.5, it will succesfully deserialize that object, reconstruct the dynamic stub from information in the serialization stream, and execute the registration method implementation.
If the client exports by using a stub class instead of the above, it will create an object of that class and send it to the server as a parameter to the registration call; the server will try to deserialize it; and if it doesn't have the stub class available it will throw that exception.
This is how it works.

How can I change the setting to one appropriate to java1.2

Hello.
I am using WebLogic 4.5.1 .
and recently started to use JDK 1.2 instead of JDK 1.1.7.
So, I set [start]-[weblogic]-[Choose1.2JRE] in environment.
and then, if I execute T3Server, the message of
"javai.dll class path cannot be found " is displayed and the server is not
loaded.
However, javai.dll was in java1.1.X\bin.
I can assume that a setting is to java1.1.X.
--> How can I change the setting to one appropriate to java 1.2
It's my environment
ClassPath
.;c:\weblogic\classes;C:\weblogic\lib\weblogicaux.jar;C:\weblogic\license;c:
\weblogic;C:\weblogic\myserver\clientclasses;C:\weblogic\myserver\serverclas
ses;C:\weblogic\myserver\servletclasses;C:\weblogic\mssqlserver4\classes;c:\
weblogic\classes\boot;C:\weblogic\eval\cloudscape\lib\cloudscape.jar;c:\rmi-
iiop\lib\iioprt11.jar;c:\rmi-iiop\lib\iioprt.jar;c:\rmi-iiop\lib\rmiorb.jar;
C:\jsdk2.1\runner.jar;C:\jsdk2.1\servlet.jar
Path :
%SystemRoot%\system32;C:\jdk1.3bin;c:\weblogic;c:\weblogic\bin;
c:\;c:\bat;c:\util\;C:\jsdk2.0\bin
Hyung Gi Min

Problem running a simple Hello World RMI Program

I wrote a simple RMI application, consisting of a Server Interface, Server Implementation and a Client.
Since the codes are really small, am pasting them here so that you could identify the problem if any, in the code.
1. Server Interface......
import java.rmi.* ;
public interface HelloInterface extends java.rmi.Remote
     public void sayHello(String arg) throws RemoteException ;
2. Server Implementation......
import java.rmi.* ;
import java.rmi.server.* ;
public class HelloImpl extends UnicastRemoteObject implements HelloInterface
     public HelloImpl() throws RemoteException
          super() ;
     public void sayHello(String arg) throws RemoteException{
          try{
               System.out.println("RMI Program : Hello "+arg) ;
          catch(Exception e){
               e.printStackTrace() ;
               //throw new java.rmi.UnexpectedException("undeclared checked exception", e);
     public static void main(String[] args) throws RemoteException
          try{
               if( System.getSecurityManager() == null )
                    System.setSecurityManager( new RMISecurityManager() ) ;
               HelloImpl impl = new HelloImpl() ;
               Naming.bind("HelloService",impl) ;
               System.out.println( "Service bound..." ) ;
          catch(Exception e){
               e.printStackTrace() ;
               //throw new java.rmi.UnexpectedException("undeclared checked exception", e);
3. Client Code.
import java.rmi.* ;
import java.rmi.Naming.* ;
class RMIClient
     public static void main(String[] args)
          try{
               if(System.getSecurityManager()==null)
                    System.setSecurityManager( new RMISecurityManager() ) ;
               HelloInterface helloInt = (HelloInterface) Naming.lookup("rmi://sand.cise.ufl.edu/HelloService") ;
               helloInt.sayHello("Ranjit") ;
          catch(Exception e){
               e.printStackTrace() ;
I have double checked the classpaths and they all look fine..
I have even unset the classpath from the shell which runs the rmiregistry..am still getting these errors..
1. If i use the default java to run the application..this is the error that it spits..
sand:24% java -Djava.security.policy=java.policy HelloImpl
java.rmi.UnexpectedException: undeclared checked exception; nested exception is:
java.lang.ClassNotFoundException: HelloImpl_Stub
at sun.rmi.registry.RegistryImpl_Stub.bind(Unknown Source)
at java.rmi.Naming.bind(Naming.java:110)
at HelloImpl.main(HelloImpl.java:28)
Caused by: java.lang.ClassNotFoundException: HelloImpl_Stub
at sun.rmi.transport.StreamRemoteCall.exceptionReceivedFromServer(StreamRemoteCall.java:247)
at sun.rmi.transport.StreamRemoteCall.executeCall(StreamRemoteCall.java:223)
at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:350)
... 3 more
2. Using java from some other location..the error looks different...but in both cases it just gives errors :((
sand:25% /usr/java1.2/bin/java -Djava.security.policy=java.policy HelloImpl
java.rmi.UnexpectedException: undeclared checked exception; nested exception is:
java.lang.ClassNotFoundException: HelloImpl_Stub
java.lang.ClassNotFoundException: HelloImpl_Stub
at java.lang.Throwable.fillInStackTrace(Native Method)
at java.lang.Throwable.fillInStackTrace(Compiled Code)
at sun.rmi.transport.StreamRemoteCall.exceptionReceivedFromServer(Compiled Code)
at sun.rmi.transport.StreamRemoteCall.executeCall(StreamRemoteCall.java:223)
at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:342)
at sun.rmi.registry.RegistryImpl_Stub.bind(Unknown Source)
at java.rmi.Naming.bind(Naming.java:116)
at HelloImpl.main(HelloImpl.java:28)
I am embarking on a huge assignment but if am having problems getting started..
Your help will be highly appreciated..
thanx and regards
Ranjit Iyer

First of all you should be posting this Q in the RMI forum :)
You are getting that error because your stub is not in your clients classpath (or u can say the compiler is not able to find it).
Make sure that the file HelloImpl_Stub is in the client classpath/package.
Regards
Meka Toka

How do I import RMI stubs to Creator?

I need to access remote methods that are already deployed on the j2ee application server. I can' figure out where I need to put the generated stub class so that the application I'm developing can use it. I've put a copy of the stub in every folder that seemed like it might work but no luck so far. Thanks.

Sure. I hope this can help.
Server -- Sun AppServer 8.0 / Java 1.5 / linux 2.4.26
Creator -- Sun AppServer 8.0 (default) / Java1.4.2 (default) / WinXPHome
[#|2004-09-14T16:21:39.905-0500|INFO|sun-appserver-pe8.0.0_01|javax.enterprise.system.container.web|_ThreadID=15;|WebModule[/simplemediacontroller]error unmarshalling return; nested exception is:
     java.lang.ClassNotFoundException: java.rmi.server.RemoteObjectInvocationHandler|#]
[#|2004-09-14T16:21:39.905-0500|SEVERE|sun-appserver-pe8.0.0_01|com.sun.faces.lifecycle.InvokeApplicationPhase|_ThreadID=15;|#{Queue.pauseButton_action}: javax.faces.el.EvaluationException: java.lang.NullPointerException
javax.faces.FacesException: #{Queue.pauseButton_action}: javax.faces.el.EvaluationException: java.lang.NullPointerException
     at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:78)
     at javax.faces.component.UICommand.broadcast(UICommand.java:312)
     at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:267)
     at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:381)
     at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:75)
     at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:200)
     at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:90)
     at javax.faces.webapp.FacesServlet.service(FacesServlet.java:197)
     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:324)
     at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:246)
     at java.security.AccessController.doPrivileged(Native Method)
     at javax.security.auth.Subject.doAsPrivileged(Subject.java:500)
     at org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:268)
     at org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:162)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:236)
     at org.apache.catalina.core.ApplicationFilterChain.access$000(ApplicationFilterChain.java:55)
     at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.java:145)
     at java.security.AccessController.doPrivileged(Native Method)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:141)
     at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:109)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:522)
     at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:214)
     at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:168)
     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:109)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:522)
     at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:144)
     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:109)
     at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:133)
     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:107)
     at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:539)
     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:107)
     at com.sun.enterprise.webservice.EjbWebServiceValve.invoke(EjbWebServiceValve.java:134)
     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:107)
     at com.sun.enterprise.security.web.SingleSignOn.invoke(SingleSignOn.java:254)
     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:107)
     at com.sun.enterprise.web.VirtualServerValve.invoke(VirtualServerValve.java:209)
     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:107)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:522)
     at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:114)
     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:109)
     at com.sun.enterprise.web.VirtualServerMappingValve.invoke(VirtualServerMappingValve.java:166)
     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:107)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:522)
     at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:936)
     at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:165)
     at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:683)
     at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:604)
     at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:542)
     at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:647)
     at java.lang.Thread.run(Thread.java:534)
Caused by: javax.faces.el.EvaluationException: java.lang.NullPointerException
     at com.sun.faces.el.MethodBindingImpl.invoke(MethodBindingImpl.java:130)
     at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:72)
     ... 53 more
Caused by: java.lang.NullPointerException
     at simplemediacontroller.Queue.pauseButton_action(Queue.java:158)
     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:324)
     at com.sun.faces.el.MethodBindingImpl.invoke(MethodBindingImpl.java:126)
     ... 54 more
|#]
[#|2004-09-14T16:21:39.915-0500|SEVERE|sun-appserver-pe8.0.0_01|javax.enterprise.system.container.web|_ThreadID=15;|StandardWrapperValve[Faces Servlet]: Servlet.service() for servlet Faces Servlet threw exception
javax.faces.FacesException: #{Queue.pauseButton_action}: javax.faces.el.EvaluationException: java.lang.NullPointerException
     at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:78)
     at javax.faces.component.UICommand.broadcast(UICommand.java:312)
     at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:267)
     at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:381)
     at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:75)
     at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:200)
     at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:90)
     at javax.faces.webapp.FacesServlet.service(FacesServlet.java:197)
     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:324)
     at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:246)
     at java.security.AccessController.doPrivileged(Native Method)
     at javax.security.auth.Subject.doAsPrivileged(Subject.java:500)
     at org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:268)
     at org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:162)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:236)
     at org.apache.catalina.core.ApplicationFilterChain.access$000(ApplicationFilterChain.java:55)
     at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.java:145)
     at java.security.AccessController.doPrivileged(Native Method)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:141)
     at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:109)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:522)
     at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:214)
     at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:168)
     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:109)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:522)
     at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:144)
     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:109)
     at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:133)
     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:107)
     at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:539)
     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:107)
     at com.sun.enterprise.webservice.EjbWebServiceValve.invoke(EjbWebServiceValve.java:134)
     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:107)
     at com.sun.enterprise.security.web.SingleSignOn.invoke(SingleSignOn.java:254)
     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:107)
     at com.sun.enterprise.web.VirtualServerValve.invoke(VirtualServerValve.java:209)
     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:107)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:522)
     at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:114)
     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:109)
     at com.sun.enterprise.web.VirtualServerMappingValve.invoke(VirtualServerMappingValve.java:166)
     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:107)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:522)
     at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:936)
     at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:165)
     at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:683)
     at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:604)
     at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:542)
     at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:647)
     at java.lang.Thread.run(Thread.java:534)
Caused by: javax.faces.el.EvaluationException: java.lang.NullPointerException
     at com.sun.faces.el.MethodBindingImpl.invoke(MethodBindingImpl.java:130)
     at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:72)
     ... 53 more
Caused by: java.lang.NullPointerException
     at simplemediacontroller.Queue.pauseButton_action(Queue.java:158)
     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:324)
     at com.sun.faces.el.MethodBindingImpl.invoke(MethodBindingImpl.java:126)
     ... 54 more

RequestTimeoutException error while invoking a BPEL process using RMI

Hi,
I am getting RequestTimeoutException error while invoking a BPEL process using this code:
Locator locator = LocatorFactory.createLocator(jndiProps);
String compositeDN = "default/"+processName+"!1.0";
Composite composite = locator.lookupComposite(compositeDN);
String serviceName = "client";
Service deliveryService = composite.getService(serviceName);
NormalizedMessage nm = new NormalizedMessageImpl();
nm.getPayload().put("payload", requestXml);
NormalizedMessage res = deliveryService.request("process", nm);
responseMap = res.getPayload();
The error stack trace is
weblogic.rmi.extensions.RequestTimeoutException: RJVM response from 'weblogic.rjvm.RJVMImpl@604f2d14 - id: '-361032376059206
2776S:10.67.232.164:[8001,-1,-1,-1,-1,-1,-1]:emaar_domain:soa_server1' connect time: 'Mon Jan 18 11:34:41 GST 2010'' for 'executeServiceMethod
(Loracle.soa.management.CompositeDN;Ljava.lang.String;Ljava.lang.String;[Ljava.lang.Object;) 'timed out after: 60000ms.
oracle.fabric.common.FabricInvocationException: weblogic.rmi.extensions.RequestTimeoutException: RJVM response from 'weblogic.rjvm.RJVMImpl@60
4f2d14 - id: '-3610323760592062776S:10.67.232.164:[8001,-1,-1,-1,-1,-1,-1]:emaar_domain:soa_server1' connect time: 'Mon Jan 18 11:34:41 GST 20
10'' for 'executeServiceMethod(Loracle.soa.management.CompositeDN;Ljava.lang.String;Ljava.lang.String;[Ljava.lang.Object;) 'timed out after: 6
0000ms.
        at oracle.soa.management.internal.facade.ServiceImpl.request(ServiceImpl.java:135)
        at com.gss.common.bo.BpelUtil.invokeBPELProcess(BpelUtil.java:81)
To add to it the BPEL process is executing successfuly and RMI call timeout is happening.
Can I know how to increase the related timeout value?

Have got the same problem. Scenario at my end is little different though.
I am trying to invoke a BPEL process from an ESB Service.
I am trying to look into it..
However, would be grateful, if someone can give some insight into this since many are running into this issue without being able to fix.
Ashish.

Error: while generating SQL.java.rmi.ServerException:

Hi:
I tried the JGuru's "MusicStore" example. HOwever at Task 6 and 7 I am getting the following error:
Error: while generating SQL.java.rmi.ServerException:
RemoteException occured in server thread; nested exception is:
* java.rmi.RemoteException: Error connecting to database;
nested exception is:
* SQL Exception: Failed to start database 'MusicStoreDB', see
the next exception for details.
Please make sure the database name/user/password is valid
and the J2ee server and database are running.
However when i check my database it is running perfectly:
E:\>%j2ee_home%\bin\cloudscape -start
Sun Feb 16 12:48:11 PST 2003: [RmiJdbc] Starting Cloudscape RmiJdbc Server Version
Sun Feb 16 12:48:14 PST 2003: [RmiJdbc] COM.cloudscape.core.JDBCDriver registered i
Sun Feb 16 12:48:14 PST 2003: [RmiJdbc] Binding RmiJdbcServer...
Sun Feb 16 12:48:14 PST 2003: [RmiJdbc] No installation of RMI Security Manager...
Sun Feb 16 12:48:14 PST 2003: [RmiJdbc] RmiJdbcServer bound in rmi registry
Server:
J2EE server listen port: 1050
Naming service started:1050
Binding DataSource, name = jdbc/DB2, url = jdbc:cloudscape:rmi:CloudscapeDB;crea
te=true
Binding DataSource, name = jdbc/Cloudscape, url = jdbc:cloudscape:rmi:Cloudscape
DB;create=true
Binding DataSource, name = jdbc/InventoryDB, url = jdbc:cloudscape:rmi:Cloudscap
eDB;create=true
Binding DataSource, name = jdbc/DB1, url = jdbc:cloudscape:rmi:CloudscapeDB;crea
te=true
Binding DataSource, name = jdbc/MusicStore, url = jdbc:cloudscape:rmi:MusicStore
DB;create=false
Binding DataSource, name = jdbc/XACloudscape, url = jdbc/XACloudscape__xa
Binding DataSource, name = jdbc/XACloudscape__xa, dataSource = COM.cloudscape.co
re.RemoteXaDataSource@1d88db7
Starting JMS service...
Initialization complete - waiting for client requests
Binding: < JMS Destination : jms/Topic , javax.jms.Topic >
Binding: < JMS Destination : jms/Queue , javax.jms.Queue >
Binding: < JMS Cnx Factory : TopicConnectionFactory , Topic , No properties >
Binding: < JMS Cnx Factory : QueueConnectionFactory , Queue , No properties >
Binding: < JMS Cnx Factory : jms/QueueConnectionFactory , Queue , No properties
>
Binding: < JMS Cnx Factory : jms/TopicConnectionFactory , Topic , No properties
>
Starting web service at port: 8000
Starting secure web service at port: 7000
J2EE SDK/1.3.1
Starting web service at port: 9191
J2EE SDK/1.3.1
J2EE server startup complete.
Can anyone suggest me a way out..plz

what type of persistent u r using also post ur query if bmp and check with another example with cmp.

Several JVM s with RMI?

Hi,
As you can guess, my Java program needs more and more memory as users connections grow.
We are of course trying to optimize the way its running but looks like we will anyway soon need to increase ressources of our JVM.
We first thought to increase memory heap but there is a limit, on any 32 bit system 4Go seems the theoretical maximum ram size. And we have to keep a 32 bit JVM, cant change this.
Here is our next idea: we would like to run our program on several JVMs.
Two options came then, and so here are my question: (maybe irrelevant for experts but I am a beginner regarding distributed architecture, so feel free to give me some reference to learn about it)
-First option: several 32 bit JVMs running together on one 64bits machine
Is it possible to run several 32 bit JVM (jre 1.5) on a windows (or linux) 64 bits machine? So that we could share the system (big) ram between each of them.
Is there, in this case, a limit for the memory heap per JVM?
What would be in this case the best way to communicate between jvms (I m thinking about RMI, but is it the only way to?)
-Second option: run several 32bits JVM on several 32 bits machine.
Questions are the same here:
is it possible? I guess so, and would it be worse or better from a performance/learning time point of view, compare to option 1?
Is RMI the best way here to make the several jvm communicate?
Hope this is clear, english is not my first language so feel free to ask me any precision
Thank you very much for any help or reference.
Jipe

Multiple JVMs dont have any inherent special behavior on the same maching. However, you must consider the shared resources of that machine such as ports and files that may be contended for.
The only advantage of multiple JVMs of single JVMs is an OS one. The JVMs are separate processes and as such if one crashes it will not bring the other down.
If you want to transfer user sessions from one JVM to another, no matter if on the same computer or not, you will need an architecture to support this. That is where application servers come in. Some of them will allow you to do this. So if you design your product to run in an application server, you have a lot of room to expand. That is really the benefit of designing for an application server.
The details of a shared session are likely very complicated. You will have to ask the application server folks about that. Maybe go over to the JBoss forums.

What is the difference between RMI and JAX-RPC?

Dear All
First of all my understanding of RMI and JAX-RPC:
RMI is JAVA only version of RPC. It can't talk to any other language.
JAX-RPC is a part of JWSDP and if you implement your client and server with JAX-RPC, client written in any language can talk with JAX-RPC implementation.
What else makes them different and am I right with my understanding?
Finally, I would like to develop clients which will have a java class, say httpserver.java, which will act like a http server, listens to a http port. Now, Two such client will run in two different PC and I want to call a module from one client to another which should be accessible via my httpserver.java. For that which should be my choice RMI or JAX-RPC? Can I achive it with http get-post method, as I am expecting to read some value of variables from one client to the another.
Say class A has variable a, aa, aaa and clas B has variable b, bb, bbb. Now I want to read the value of b, bb, bbb from class A. How do I do that when class B is listening to a http port with my httpserver.java class.
Lastly, say B is listening to a http port and I want to send a file to B from A. How can I do that? Remember, B didn�t ask for that. How can A send a file to B when B is listening to a http port with my httpserver.java.
With regards
Mohammed Jubaer Arif
Mobile: +61-0411215302
Personal Web: http://www.geocities.com/jubairarifctg/
Org. Web.: http://www.geocities.com/halimschamber/

simply put, RMI allows you to (semi) transparently treat remote objects as if they were local, and your distributed application can be written (more or less) like a "normal" java app. Sockets just give you a "raw" connection to work with, and you get to build up your application from that.
I hope that helped
Lee

RMI : error on JRE 1.6 but not on JRE 1.5 ???

Hello,
I've got a problem with my application since i use JRE 1.6
My application run perfectly with JRE 1.5 !!!
My code is first :
LocateRegistry.createRegistry(port);
NamingManager.setInitialContextFactoryBuilder(new InitialServerContextFactory());
NamingManager.getInitialContext(environment);(with environment is an hastable containing HOST et PORT)
An next, i have a Java Class witch impl�ments Context :
public class InitialServerContext implements Context
    public void bind(String name, Object obj) throws NamingException
          getRMIContext().bind("rmi://" + mServer + ':' + mPort + '/' + name, obj);
    static Context getRMIContext() throws NamingException
          return NamingManager.getURLContext("rmi", null);
The error on JRE 1.6 is on the line :
getRMIContext().bind("rmi://" + mServer + ':' + mPort + '/' + name, obj);
_Exception is
:_java.lang.NullPointerException
at com.sun.jndi.rmi.registry.RegistryContext.<init>(Unknown Source)
at com.sun.jndi.url.rmi.rmiURLContext.getRootURLContext(Unknown Source)
at com.sun.jndi.toolkit.url.GenericURLContext.bind(Unknown Source)
at com.xxx.aes.naming.InitialServerContext.bind(InitialServerContext.java:231)
at com.xxx.aes.naming.InitialServerContextFactory.getInitialContext(InitialServerContextFactory.java:104)
at javax.naming.spi.NamingManager.getInitialContext(Unknown Source)
at com.xxx.aes.server.NamingServer.start(NamingServer.java:65)
What is the difference between JRE 1.5 and 1.6 ?
Why my application in 1.6 is not correct ?
If necessary, i can give you my Java Class InitialServerContextFactory.java
Thanks a lot for your responses.

Hello,
I tired this approach you mentioned, and interestingly if i just make ejb calls without any event handling, meaning if i call them separately they all just work fine and i see the results coming back from server. But when i relate them to any click events the whole IE freezes.
One more thing i noted is that, seems like the way JRE 1.6 render my applet is somewhat different than JRE 1.5.* familiy,because initially when my aplet is loaded, i see everything which should be displayed from the first screen, but any further operations i cannot perform, even opening a file chooser from tool bar. I admit my applet is real heavy and it contains a lot of data in it on the first screen, may be its the heap size causing the problem in 1.6 but fine with jre 1.5.
Day by day am coming to conlusion that jre 1.6 is my concern now ..:(
Thanks,

Urgent Help Required For Starting RMI server from servlet.

I am currently working on rmi project.
I want to send request to remote machine(Web host) where my application is from desktop client .For that we are using RMI.
I am writing servlet and inside it i am binding object to registry for rmi server.
which will be deployed on remote server.
code ....
Registry reg;
reg=LocateRegistry.createRegistry(1099);
Server server=new Server("server");//class whose remote object to be accessed
//extends unicast remote object.Implement ServerInt interface which extends Remote.
reg.bind("server",server);
When i am trying to access this object i am getting following exception.
javax.naming.CommunicationException [Root exception is java.rmi.UnmarshalExcepti
on: error unmarshalling return; nested exception is:
java.lang.ClassNotFoundException: ServerModule.ServerInt]
at com.sun.jndi.rmi.registry.RegistryContext.lookup(Unknown Source)
at com.sun.jndi.toolkit.url.GenericURLContext.lookup(Unknown Source)
at javax.naming.InitialContext.lookup(Unknown Source)
at RequstReplication.main(RequstReplication.java:27)
Caused by: java.rmi.UnmarshalException: error unmarshalling return; nested excep
tion is:
java.lang.ClassNotFoundException: ServerModule.ServerInt
at sun.rmi.registry.RegistryImpl_Stub.lookup(Unknown Source)
... 4 more
Caused by: java.lang.ClassNotFoundException: ServerModule.ServerInt
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClassInternal(Unknown Source)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at sun.rmi.server.LoaderHandler.loadProxyInterfaces(Unknown Source)
at sun.rmi.server.LoaderHandler.loadProxyClass(Unknown Source)
at sun.rmi.server.LoaderHandler.loadProxyClass(Unknown Source)
at java.rmi.server.RMIClassLoader$2.loadProxyClass(Unknown Source)
at java.rmi.server.RMIClassLoader.loadProxyClass(Unknown Source)
at sun.rmi.server.MarshalInputStream.resolveProxyClass(Unknown Source)
at java.io.ObjectInputStream.readProxyDesc(Unknown Source)
at java.io.ObjectInputStream.readClassDesc(Unknown Source)
at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source)
at java.io.ObjectInputStream.readObject0(Unknown Source)
at java.io.ObjectInputStream.readObject(Unknown Source)
... 5 more
I can access naming enumeration of registry and object bound to it.
by following program.I shows corect objects.
Context namingContext=new InitialContext();
NamingEnumeration<NameClassPair> e=namingContext.list("rmi:");
while(e.hasMore())
System.out.println(e.next().getName());
While when i start RMI server from simple java program i can access these objects from registry.
I am not getting what is problem problem.Is there any other way to send request?
Plese give quick response.

I am currently working on rmi project.
I want to send request to remote machine(Web host) where my application is from desktop client .For that we are using RMI.
I am writing servlet and inside it i am binding object to registry for rmi server.
which will be deployed on remote server.
code ....
Registry reg;
reg=LocateRegistry.createRegistry(1099);
Server server=new Server("server");//class whose remote object to be accessed
//extends unicast remote object.Implement ServerInt interface which extends Remote.
reg.bind("server",server);
When i am trying to access this object i am getting following exception.
javax.naming.CommunicationException [Root exception is java.rmi.UnmarshalExcepti
on: error unmarshalling return; nested exception is:
java.lang.ClassNotFoundException: ServerModule.ServerInt]
at com.sun.jndi.rmi.registry.RegistryContext.lookup(Unknown Source)
at com.sun.jndi.toolkit.url.GenericURLContext.lookup(Unknown Source)
at javax.naming.InitialContext.lookup(Unknown Source)
at RequstReplication.main(RequstReplication.java:27)
Caused by: java.rmi.UnmarshalException: error unmarshalling return; nested excep
tion is:
java.lang.ClassNotFoundException: ServerModule.ServerInt
at sun.rmi.registry.RegistryImpl_Stub.lookup(Unknown Source)
... 4 more
Caused by: java.lang.ClassNotFoundException: ServerModule.ServerInt
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClassInternal(Unknown Source)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at sun.rmi.server.LoaderHandler.loadProxyInterfaces(Unknown Source)
at sun.rmi.server.LoaderHandler.loadProxyClass(Unknown Source)
at sun.rmi.server.LoaderHandler.loadProxyClass(Unknown Source)
at java.rmi.server.RMIClassLoader$2.loadProxyClass(Unknown Source)
at java.rmi.server.RMIClassLoader.loadProxyClass(Unknown Source)
at sun.rmi.server.MarshalInputStream.resolveProxyClass(Unknown Source)
at java.io.ObjectInputStream.readProxyDesc(Unknown Source)
at java.io.ObjectInputStream.readClassDesc(Unknown Source)
at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source)
at java.io.ObjectInputStream.readObject0(Unknown Source)
at java.io.ObjectInputStream.readObject(Unknown Source)
... 5 more
I can access naming enumeration of registry and object bound to it.
by following program.I shows corect objects.
Context namingContext=new InitialContext();
NamingEnumeration<NameClassPair> e=namingContext.list("rmi:");
while(e.hasMore())
System.out.println(e.next().getName());
While when i start RMI server from simple java program i can access these objects from registry.
I am not getting what is problem problem.Is there any other way to send request?
Plese give quick response.

Help me to run this simple RMI example

When i m running this example in standalone pc it works but while running on to different pc it gives error though I m giving the IP address from client of server.. If anyone can help me out plz help.
Code:
ReceiveMessageInterface
import java.rmi.*;
public interface ReceiveMessageInterface extends Remote
void receiveMessage(String x) throws RemoteException;
Server code:
import java.rmi.*;
import java.rmi.registry.*;
import java.rmi.server.*;
import java.net.*;
public class RmiServer extends java.rmi.server.UnicastRemoteObject
implements ReceiveMessageInterface
int thisPort;
String thisAddress;
Registry registry; // rmi registry for lookup the remote objects.
// This method is called from the remote client by the RMI.
// This is the implementation of the �ReceiveMessageInterface�.
public void receiveMessage(String x) throws RemoteException
System.out.println(x);
public RmiServer() throws RemoteException
try{
// get the address of this host.
thisAddress= (InetAddress.getLocalHost()).toString();
catch(Exception e){
throw new RemoteException("can't get inet address.");
thisPort=3232; // this port(registry�s port)
System.out.println("this address="+thisAddress+",port="+thisPort);
try{
// create the registry and bind the name and object.
registry = LocateRegistry.createRegistry( thisPort );
registry.rebind("rmiServer", this);
catch(RemoteException e){
throw e;
static public void main(String args[])
try{
RmiServer s=new RmiServer();
catch (Exception e) {
e.printStackTrace();
System.exit(1);
Client code:
import java.rmi.*;
import java.rmi.registry.*;
import java.net.*;
public class RmiClient
static public void main(String args[])
ReceiveMessageInterface rmiServer;
Registry registry;
String serverAddress=args[0];
String serverPort=args[1];
String text=args[2];
System.out.println("sending "+text+" to "+serverAddress+":"+serverPort);
try{
// get the �registry�
registry=LocateRegistry.getRegistry(
serverAddress,
(new Integer(serverPort)).intValue()
// look up the remote object
rmiServer=
(ReceiveMessageInterface)(registry.lookup("rmiServer"));
// call the remote method
rmiServer.receiveMessage(text);
catch(RemoteException e){
e.printStackTrace();
catch(NotBoundException e){
e.printStackTrace();
}

When we compile with rmic skeleton and stub get created then we hav to place stub at each client ???Your remote client applcation need only _Stub.class fiels.
Is there way by which we can know how many clients are connected to the
server and there IP address, can anyone give the code... I guess that you should use a RMI login/logout method to register/unregister your client connection information into a databse or a simple static Hashtable(Vector) object.

Difference Between JMS and RMI

Difference Between JMS and RMI in J2EE Technologies

STFW
JMS - http://www.google.co.za/search?hl=en&q=what+is+jms&meta=
RMI - http://www.google.co.za/search?hl=en&q=what+is+rmi&meta=

Problem with JAVA1.3 on HP_UX 11

I run my application using BC4J (jbo tags) on HP_UX 11 with JAVA1.3 with a lot of memmory >2GB. But sometimes java hangs and nothing is not usefull to refresh application, I must use kill -9 <PID of java> to restart it.
Please can you help me, what is wrong?
email: [email protected]

Did you recompile the code on the current machine?
Jens

No RMI in java1.4 ?

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