ClassNotFoundException in EJB's and Threads (Classloader issue)

A very interesting bug has cropped up in WebLogic 6.1. When a J2EE
application packaged appropriately, a client application running in a
user-created Thread will always throw a ClassNotFoundException when
attempting to get back a user-created object from an EJB living on
another cluster. This error does not happen when the call is being made
from outside a Thread.
Sounds strange, I know, so I'll try to give everyone as much detail as
possible so they can avoid this bug, and so that the folks at BEA can
fix it.
* A java class running inside a clustered WL6.1 server is attempting to
reference an EJB on another clustered WL 6.1 server. Accessing the bean
is not a problem, the client class is able to obtain a remote reference
to the bean and make method calls on it. Calling a method causes the
following stack trace:
2002-01-11 10:36:57,331 [Thread-4] ERROR
wpni.app.mywp.display.DisplayJobs$JobsMonitor -
wpni.app.mywp.display.DisplayJobs$JobsMonitor.run: Error checking Jobs
status.
java.rmi.UnmarshalException: failed to unmarshal class
wpni.app.jobs.JobsData; nested exception is:
java.lang.ClassNotFoundException: wpni.app.jobs.JobsData: This
error could indicate that a component was deployed on a cluster member
but not other members of that cluster. Make sure that any component
deployed on a server that is part of a cluster is also deployed on all
other members of that cluster
java.lang.ClassNotFoundException: wpni.app.jobs.JobsData: This error
could indicate that a component was deployed on a cluster member but
not other members of that cluster. Make sure that any component deployed
on a server that is part of a cluster is also deployed on all other
members of that cluster
at
weblogic.j2ee.ApplicationManager.loadClass(ApplicationManager.java:146)
at
weblogic.rjvm.MsgAbbrevInputStream.readClassDescriptor(MsgAbbrevInputStream.java:211)
at
weblogic.common.internal.ChunkedObjectInputStream$NestedObjectInputStream.readClassDescriptor(ChunkedObjectInputStream.java:290)
at
java.io.ObjectInputStream.inputClassDescriptor(ObjectInputStream.java:906)
at
java.io.ObjectInputStream.readObject(ObjectInputStream.java:366)
at
java.io.ObjectInputStream.readObject(ObjectInputStream.java:236)
at
java.io.ObjectInputStream.inputObject(ObjectInputStream.java:1186)
at
java.io.ObjectInputStream.readObject(ObjectInputStream.java:386)
at
java.io.ObjectInputStream.readObject(ObjectInputStream.java:236)
at
weblogic.common.internal.ChunkedObjectInputStream.readObject(ChunkedObjectInputStream.java:107)
at
weblogic.common.internal.ChunkedObjectInputStream.readObject(ChunkedObjectInputStream.java:115)
at weblogic.rmi.internal.ObjectIO.readObject(ObjectIO.java:56)
at
weblogic.rmi.internal.BasicRemoteRef.unmarshalReturn(BasicRemoteRef.java:230)
at
weblogic.rmi.cluster.ReplicaAwareRemoteRef.invoke(ReplicaAwareRemoteRef.java:254)
at
weblogic.rmi.cluster.ReplicaAwareRemoteRef.invoke(ReplicaAwareRemoteRef.java:220)
at weblogic.rmi.internal.ProxyStub.invoke(ProxyStub.java:35)
at $Proxy140.getJobsData(Unknown Source)
at
wpni.app.mywp.display.DisplayJobs$JobsMonitor.run(DisplayJobs.java:48)
at java.lang.Thread.run(Thread.java:484)
* The class that is not found (JobsData) is definitely in the EAR file
on both the client cluster and the server cluster, and in the
appropriate location.
* When we attempted to run the code outside of a Thread, everything
worked perfectly, so it was definitely the Thread that was causing the
problem.
* Deploying the EJB on the client cluster did not do anything to solve
the problem.
* Adding the JobsData to the System CLASSPATH at the startup of the
WebLogic server DID solve the problem. But of course that defeats the
purpose of packaging everything in the EAR file.
So, the conclusion seems to be that when DisplayJobs$JobsMonitor kicked
off the Thread, the Thread should have been created in either the WAR's
classloader or the JAR's classloader (wouldn't matter, since the
JobsData class is in the JAR's classloader, which is a parent of the
WAR's classloader). But instead, the Thread is being created in the
System classloader, which can't find the JobsData class!
We believe that any Thread created by a class living within an EAR's
classloader should remain within that same classloader, and not migrate
to any other classloader, in order to avoid situations like this. We're
opening a case with BEA to attempt to get this resolved. In the
meantime, we recommend to developers that if they have to make
cross-cluster RMI calls from inside user-created Threads, that they only
attempt to receive primitive types or standard JDK objects. Otherwise,
you'll have to add the classes to the System CLASSPATH at startup of the
WebLogic instance.
Thanks,
Erin
* "[White House spokeperson Ari] Fleischer
* warned Democrats this morning against
* investigations into the Bush administration's
* dealings with Enron. 'The American people
* are tired of partisan witch hunts and endless
* investigations,' he said." [Ed.: Uh... ]
* www.washingtonpost.com/wp-dyn/articles/A25159-2002Jan10.html
* Erin Reid Myers, Chief Architect
* WashingtonPost.Newsweek Interactive
* [email protected]
* Work: (703) 469-3154
* Cell: (703) 725-3050
[att1.html]

Things can go seriously wrong if your application uses user threads (violating
EJB spec programming restrictions and BEA recommendations).
I'm curious, does it work if you enable network classloading on the server
which invokes remote EJB (in config.xml -
<Server NetworkClassLoadingEnabled="true" ...
</Server>
Erin Reid Myers <[email protected]> wrote:
A very interesting bug has cropped up in WebLogic 6.1. When a J2EE
application packaged appropriately, a client application running in a
user-created Thread will always throw a ClassNotFoundException when
attempting to get back a user-created object from an EJB living on
another cluster. This error does not happen when the call is being made
from outside a Thread.
Sounds strange, I know, so I'll try to give everyone as much detail as
possible so they can avoid this bug, and so that the folks at BEA can
fix it.
* A java class running inside a clustered WL6.1 server is attempting to
reference an EJB on another clustered WL 6.1 server. Accessing the bean
is not a problem, the client class is able to obtain a remote reference
to the bean and make method calls on it. Calling a method causes the
following stack trace:
2002-01-11 10:36:57,331 [Thread-4] ERROR
wpni.app.mywp.display.DisplayJobs$JobsMonitor -
wpni.app.mywp.display.DisplayJobs$JobsMonitor.run: Error checking Jobs
status.
java.rmi.UnmarshalException: failed to unmarshal class
wpni.app.jobs.JobsData; nested exception is:
java.lang.ClassNotFoundException: wpni.app.jobs.JobsData: This
error could indicate that a component was deployed on a cluster member
but not other members of that cluster. Make sure that any component
deployed on a server that is part of a cluster is also deployed on all
other members of that cluster
java.lang.ClassNotFoundException: wpni.app.jobs.JobsData: This error
could indicate that a component was deployed on a cluster member but
not other members of that cluster. Make sure that any component deployed
on a server that is part of a cluster is also deployed on all other
members of that cluster
at
weblogic.j2ee.ApplicationManager.loadClass(ApplicationManager.java:146)
at
weblogic.rjvm.MsgAbbrevInputStream.readClassDescriptor(MsgAbbrevInputStream.java:211)
at
weblogic.common.internal.ChunkedObjectInputStream$NestedObjectInputStream.readClassDescriptor(ChunkedObjectInputStream.java:290)
at
java.io.ObjectInputStream.inputClassDescriptor(ObjectInputStream.java:906)
at
java.io.ObjectInputStream.readObject(ObjectInputStream.java:366)
at
java.io.ObjectInputStream.readObject(ObjectInputStream.java:236)
at
java.io.ObjectInputStream.inputObject(ObjectInputStream.java:1186)
at
java.io.ObjectInputStream.readObject(ObjectInputStream.java:386)
at
java.io.ObjectInputStream.readObject(ObjectInputStream.java:236)
at
weblogic.common.internal.ChunkedObjectInputStream.readObject(ChunkedObjectInputStream.java:107)
at
weblogic.common.internal.ChunkedObjectInputStream.readObject(ChunkedObjectInputStream.java:115)
at weblogic.rmi.internal.ObjectIO.readObject(ObjectIO.java:56)
at
weblogic.rmi.internal.BasicRemoteRef.unmarshalReturn(BasicRemoteRef.java:230)
at
weblogic.rmi.cluster.ReplicaAwareRemoteRef.invoke(ReplicaAwareRemoteRef.java:254)
at
weblogic.rmi.cluster.ReplicaAwareRemoteRef.invoke(ReplicaAwareRemoteRef.java:220)
at weblogic.rmi.internal.ProxyStub.invoke(ProxyStub.java:35)
at $Proxy140.getJobsData(Unknown Source)
at
wpni.app.mywp.display.DisplayJobs$JobsMonitor.run(DisplayJobs.java:48)
at java.lang.Thread.run(Thread.java:484)
* The class that is not found (JobsData) is definitely in the EAR file
on both the client cluster and the server cluster, and in the
appropriate location.
* When we attempted to run the code outside of a Thread, everything
worked perfectly, so it was definitely the Thread that was causing the
problem.
* Deploying the EJB on the client cluster did not do anything to solve
the problem.
* Adding the JobsData to the System CLASSPATH at the startup of the
WebLogic server DID solve the problem. But of course that defeats the
purpose of packaging everything in the EAR file.
So, the conclusion seems to be that when DisplayJobs$JobsMonitor kicked
off the Thread, the Thread should have been created in either the WAR's
classloader or the JAR's classloader (wouldn't matter, since the
JobsData class is in the JAR's classloader, which is a parent of the
WAR's classloader). But instead, the Thread is being created in the
System classloader, which can't find the JobsData class!
We believe that any Thread created by a class living within an EAR's
classloader should remain within that same classloader, and not migrate
to any other classloader, in order to avoid situations like this. We're
opening a case with BEA to attempt to get this resolved. In the
meantime, we recommend to developers that if they have to make
cross-cluster RMI calls from inside user-created Threads, that they only
attempt to receive primitive types or standard JDK objects. Otherwise,
you'll have to add the classes to the System CLASSPATH at startup of the
WebLogic instance.
Thanks,
Erin
* "[White House spokeperson Ari] Fleischer
* warned Democrats this morning against
* investigations into the Bush administration's
* dealings with Enron. 'The American people
* are tired of partisan witch hunts and endless
* investigations,' he said." [Ed.: Uh... ]
* www.washingtonpost.com/wp-dyn/articles/A25159-2002Jan10.html
* Erin Reid Myers, Chief Architect
* WashingtonPost.Newsweek Interactive
* [email protected]
* Work: (703) 469-3154
* Cell: (703) 725-3050
Dimitri

Similar Messages

IISRESET and Thread Process Issue

Hi,
IISRESET command not killing the process associated with the application that are in that pool.
Server : Windows 2012 R2
I have tried below command but its not closing the process associated with the application.
iisreset
net stop iisadmin /y
net stop w3svc /y
Thanks - Lalgy

Hi,
You can try recycling the App pool which will stop and start the process associated with the applications.
Follow the below link which explains the same.
http://technet.microsoft.com/en-us/library/cc770764%28v=ws.10%29.aspx
http://fullsocrates.wordpress.com/2012/07/25/iisreset-vs-recycling-application-pools/
Regards,
Santhosh.
www.jijitechnologies.com

Question about EJB and thread safe coding - asking again!

sorry everyone, no one seems to be interested in helping me on this, so i post it again.
i have a question about the EJB and thread safe coding. when we build EJBs, do we need to worry about thread safe issue? i know that EJBs are single threaded, and the container manages the thread for us. maybe i am wrong about this. if i wasnot, how can we program the EJB so that two or more instance of EJB are not going to have deadlock problem when accessing data resources. do we need to put syncronization in ours beans, do we even need to worry about creating a thread safe EJB? thanks in advance. the question really bothers me a lot lately.

sorry everyone, no one seems to be interested in
helping me on this, so i post it again.Excellent plan. Why not search a little bit on your own instead of waiting for your personal forum slaves to answer your call. See below.
i have a question about the EJB and thread safe
coding. when we build EJBs, do we need to worry about
thread safe issue? Read this: http://forum.java.sun.com/thread.jsp?forum=13&thread=562598&tstart=75&trange=15
i know that EJBs are single
threaded, and the container manages the thread for us.
maybe i am wrong about this. if i wasnot, how can we
program the EJB so that two or more instance of EJB
are not going to have deadlock problem when accessing
data resources. do we need to put syncronization in
ours beans, do we even need to worry about creating a
thread safe EJB? thanks in advance. the question
really bothers me a lot lately.
Java's Thread Tutorial
JavaWorld: Introduction to Java threads
IBM: Introduction to Java threads
Google: java+threads+tutorial

Parallel function call and thread issue

Sorry to post one issue here which is related to code. i was debugging a code which was wrote long time back by one developer. the issue is two function is called parallel using thread and one function set a variable true at end and another function just
looping until the variable is set to true. the variable value is not getting set to true. here i am posting a code snippet and just tell me what is mistake in the code for which variable is not getting set to true by first function.
when user click button then two function is invoked
private void UPDATE_Click(object sender, System.EventArgs e)
SavedFirst();
AddCheckThread();
public void SavedFirst()
IsOpen = true;
System.Threading.Thread loadT = new System.Threading.Thread(new System.Threading.ThreadStart(SaveAll));
loadT.Start();
IsOpen = false;
private void AddCheckThread()
if (!ALLFlag)
loadingThread = new System.Threading.Thread(new System.Threading.ThreadStart(addCheck));
loadingThread.Priority = System.Threading.ThreadPriority.Lowest;
loadingThread.Start();
private void SaveAll()
if (this.InvokeRequired)
this.Invoke(new MethodInvoker(delegate
ALLFlag = false;
if (!ALLFlag)
loadingThread = new System.Threading.Thread(new System.Threading.ThreadStart(AddProducts));
loadingThread.Priority = System.Threading.ThreadPriority.Lowest;
loadingThread.Start();
return;
private void AddProducts()
if (this.InvokeRequired)
this.Invoke(new MethodInvoker(delegate
ALLFlag = false;
if (System.Windows.Forms.MessageBox.Show(this, "Would you like to add the details into the Database?", "Add?", System.Windows.Forms.MessageBoxButtons.YesNo) == System.Windows.Forms.DialogResult.Yes)
if (comboOUR.SelectedItem == null || comboCountry.SelectedItem == null || comboSelleble.SelectedItem == null || txtOereff.Text == "" || txtUKPrice.Text == "" || txtUSPrice.Text == "" || txtSUrCharge.Text == "" || txtOURUS.Text == "" || txtOURUK.Text == "")
FormValidation();
else
Gather_Data();
bool isInserted = false;
if (System.Windows.Forms.MessageBox.Show(this, "Would you like to add the details into \"Detailed-Product\" Too?", "Add?", System.Windows.Forms.MessageBoxButtons.YesNo) == System.Windows.Forms.DialogResult.Yes)
isInserted = bbaProduct.BBASaveProduct();
if (isInserted == true)
isInserted = false;
isInserted = bbaProduct.InsertInProductTable(BBAProduct.DetailProductID);
if (isInserted == true)
System.Windows.Forms.MessageBox.Show(this, "Product Successfully Added ", "Add");
else
System.Windows.Forms.MessageBox.Show(this, "Error Occurred !! Not Added Into the Database ", "Add");
else
System.Windows.Forms.MessageBox.Show(this, "Error Occurred !! Not Added Into the Database ", "Add");
else
isInserted = bbaProduct.InsertInProductTable(0);
if (isInserted == true)
System.Windows.Forms.MessageBox.Show(this, "Successfully Inserted Into the database", "Add");
else
System.Windows.Forms.MessageBox.Show(this, "Error Occurred !! Not Added Into the Database", "Add");
else
System.Windows.Forms.MessageBox.Show(this, "Process Cancelled By The User", "Add");
ALLFlag = true;
return;
#region Add Check
private void addCheck()
if (this.InvokeRequired)
this.Invoke(new MethodInvoker(delegate
this.Opacity = 0.8;
axShockwaveFlash1.Visible = true;
axShockwaveFlash1.Play();
while (!ALLFlag)
int x = 0;
axShockwaveFlash1.Visible = false;
axShockwaveFlash1.Visible = false;
axShockwaveFlash1.StopPlay();
this.Opacity = 1;
ALLFlag = false;
loadingThread.Abort();
return;
help me to locate where is the mistake for which ALLFlag value is not getting set to true. thanks

Your reliance on a field value across threads isn't going to work reliably. In a multi-core/multi-threaded world the memory model allows for reading data out of order for optimization reasons. Additionally the CPU can and will cache recently
used data in memory that isn't shared across processors. This can get you into trouble as you will not be reading the same value across processors.
The only correct way to ensure that multiple threads access the same data correctly is to use sync objects that are designed for that such as a Semaphore or Mutex. Sync objects allow you to safely share data across threads.
Overall your code appears to be trying to update the UI using a thread but since it is calling Invoke each time you are basically spawning a thread that then blocks waiting for the UI thread. You could pretty much eliminate your issues by getting rid
of the threading calls altogether along with any sort of state management variables that were arbitrarily created (ALLflags) and simply use BeginInvoke. You didn't post who was calling your higher level save methods but if it is a UI element then BeginInvoke
and InvokeRequired are completely redundant as is all the threading.
You can cleanly update this code to eliminate all the extra variables and threading and simply use the newer async/await functionality to help resolve the issues your code is having. But you still have problems with the invoked code. In one of
the methods you are looping while waiting for a variable to be set. But since you invoked it then it is occurring on the UI thread. Because it is on the UI thread and that can only do 1 thing at a time, if ALLflag is false your code will deadlock.
The only other code that would set it to true cannot run because it is also invoked on the UI thread and only one of them can run at any one time. Basically each of your threads are going to try to run on the same thread and only 1 of them will be able
to. Until the first thread method finishes the second one will never run.
If you need Boolean flags then consider using a ManualResetEvent instead. It is thread safe, works across threads and doesn't have any of the problems of a Boolean field when talking about threading. But you still have a deadlock between your invoked
code that nothing will solve except rewriting your code.
Michael Taylor
http://blogs.msmvps.com/p3net

Java.lang.ClassNotFoundException - classloader issue ?

Hi All
We tried to deploy our ADF ear file to 10.3.6 weblogic.
Our app uses 3rd party jars put in WEB-INF/lib in war which in turn is in our app ear file.
Our web.xml is configured
<listener>
<listener-class>org.jboss.weld.environment.servlet.Listener</listener-class>
</listener>
When we deploy our ear app, we get this error:
Is this a classloader issue ? If it is, at what level of classloader this is failing ?
What file should we configure ?
Where should we put our third-party jars as we do not have control over the install weblogic servers owned by another team.
Any help is appreciated.
Sincerely
####<Sep 18, 2013 10:54:50 AM PDT> <Error> <Console> <host> <AdminServer> <[ACTIVE] ExecuteThread: '16' for queue: 'weblogic.kernel.Default (self-tuning)'> <weblogic> <> <085fcd85a0c1669b:64c5b0f5:141284171fa:-8000-00000000000001eb> <1379526890738> <BEA-240003> <Console encountered the following error weblogic.management.DeploymentException: [Deployer:149233]An unexpected error was encountered during the deployment process.
at weblogic.deploy.internal.targetserver.DeployHelper.handleException(DeployHelper.java:385)
at weblogic.deploy.internal.targetserver.DeployHelper.convertThrowableForTransfer(DeployHelper.java:511)
at weblogic.deploy.internal.targetserver.DeploymentManager.notifyCommitFailure(DeploymentManager.java:1442)
at weblogic.deploy.internal.targetserver.DeploymentManager.handleCommit(DeploymentManager.java:457)
at weblogic.deploy.internal.targetserver.DeploymentServiceDispatcher.commit(DeploymentServiceDispatcher.java:163)
at weblogic.deploy.service.internal.targetserver.DeploymentReceiverCallbackDeliverer.doCommitCallback(DeploymentReceiverCallbackDeliverer.java:195)
at weblogic.deploy.service.internal.targetserver.DeploymentReceiverCallbackDeliverer.access$100(DeploymentReceiverCallbackDeliverer.java:13)
at weblogic.deploy.service.internal.targetserver.DeploymentReceiverCallbackDeliverer$2.run(DeploymentReceiverCallbackDeliverer.java:68)
at weblogic.work.SelfTuningWorkManagerImpl$WorkAdapterImpl.run(SelfTuningWorkManagerImpl.java:545)
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:256)
at weblogic.work.ExecuteThread.run(ExecuteThread.java:221)
Caused by: java.lang.ClassNotFoundException: ch.qos.cal10n.MessageConveyorException
at weblogic.utils.classloaders.GenericClassLoader.findLocalClass(GenericClassLoader.java:297)
at weblogic.utils.classloaders.GenericClassLoader.findClass(GenericClassLoader.java:270)
at weblogic.utils.classloaders.ChangeAwareClassLoader.findClass(ChangeAwareClassLoader.java:64)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
at weblogic.utils.classloaders.GenericClassLoader.loadClass(GenericClassLoader.java:179)
at weblogic.utils.classloaders.ChangeAwareClassLoader.loadClass(ChangeAwareClassLoader.java:52)
at ch.qos.cal10n.MessageConveyor.lookup(MessageConveyor.java:115)
at ch.qos.cal10n.MessageConveyor.getMessage(MessageConveyor.java:77)
at org.jboss.weld.logging.WeldMessageConveyor.getMessage(WeldMessageConveyor.java:66)
at org.jboss.weld.exceptions.WeldExceptionKeyMessage.getAsString(WeldExceptionKeyMessage.java:67)
at org.jboss.weld.exceptions.WeldException.getMessage(WeldException.java:87)
at org.jboss.weld.exceptions.WeldException.getLocalizedMessage(WeldException.java:82)
at java.lang.Throwable.toString(Throwable.java:343)
at com.bea.logging.ThrowableWrapper.<init>(ThrowableWrapper.java:26)
at com.bea.logging.ThrowableWrapper.<init>(ThrowableWrapper.java:29)
at com.bea.logging.BaseLogRecord.setThrown(BaseLogRecord.java:172)
at com.bea.logging.BaseLogRecord.<init>(BaseLogRecord.java:100)
at weblogic.logging.WLLogRecord.<init>(WLLogRecord.java:63)
at weblogic.logging.JDKLoggerFactory.createBaseLogRecord(JDKLoggerFactory.java:85)
at com.bea.logging.LoggingService.log(LoggingService.java:234)
at weblogic.i18n.logging.Loggable.log(Loggable.java:158)
at weblogic.deploy.internal.targetserver.operations.AbstractOperation.complete(AbstractOperation.java:429)
at weblogic.deploy.internal.targetserver.operations.AbstractOperation.commit(AbstractOperation.java:326)
at weblogic.deploy.internal.targetserver.DeploymentManager.handleDeploymentCommit(DeploymentManager.java:844)
at weblogic.deploy.internal.targetserver.DeploymentManager.activateDeploymentList(DeploymentManager.java:1253)
at weblogic.deploy.internal.targetserver.DeploymentManager.handleCommit(DeploymentManager.java:440)

Please check if the clas ch.qos.cal10n.MessageConveyorException is available.
check permissions.
check if exist.
check if the directory is into JAVA_CLASSPATH.

EJB and Threads

Can an EJB have got threads? I would like to know if i can do an EJB that has a process being executed always and by another side that attends the invocations of its methods of business.

I had thought to do a special client whose task was EJB's polling logic. This special client will call constantly to methods of the EJB that will be different from the business methods. On de other hand the normal clients will call to the business methods when they need it.
Is this idea possible to develop for Entity Bean? And for Session Bean?
Thanks.

Error trying to deserialize EJB HomeHandle and EJB Handle classes

I get the following exception when I try to deserialize both a javax.ejb.HomeHandle and a javax.ejb.Handle. I serialize and immediately deserialize within the same application using the same classloader so there are not alot of external variables that may cause the problem. Any ideas on why I can't deserialize an ejb handle?
The reason I am doing this is to try and get around the need to reference another application just to call a remote method in that application. I want to serialize the remote home interface handle or the remote component interface handle and deserialize it using my local application classloader. Does anybody know if this would work?
#1#java.lang.ClassNotFoundException: Loader /L_service:ejb could not load class turtle.registry.SBRegistryRemoteHome
     at com.sap.vmc.core.impl.sapjvm.sharing.NativeSharedClassLoaderImpl.loadClass(NativeSharedClassLoaderImpl.java:609)
     at java.lang.ClassLoader.loadClass(ClassLoader.java:265)
     at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:333)
     at java.lang.Class.forName0(Native Method)
     at java.lang.Class.forName(Class.java:242)
     at java.io.ObjectInputStream.resolveProxyClass(ObjectInputStream.java:656)
     at java.io.ObjectInputStream.readProxyDesc(ObjectInputStream.java:1499)
     at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1462)
     at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1698)
     at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1304)
     at java.io.ObjectInputStream.readObject(ObjectInputStream.java:349)
     at com.sap.engine.services.ejb3.runtime.impl.LocalHandleDelegate.readStub(LocalHandleDelegate.java:177)
     at com.sap.engine.services.ejb3.runtime.impl.ServerHandleDelegate.readStub(ServerHandleDelegate.java:64)
     at com.sap.engine.services.ejb3.runtime.impl.LocalHandleDelegate.readEJBHome(LocalHandleDelegate.java:101)
     at com.sap.engine.services.ejb3.runtime.impl.StatelessHomeHandleImpl.readObject(StatelessHomeHandleImpl.java:73)
     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 java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:946)
     at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1818)
     at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1718)
     at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1304)
     at java.io.ObjectInputStream.readObject(ObjectInputStream.java:349)
     at turtle.common.util.SerializationHelper.convertObject(SerializationHelper.java:43)
     at turtle.common.server.connect.RemoteFactory.getRemoteSAPWAS(RemoteFactory.java:206)
     at turtle.common.server.connect.RemoteFactory.getRemote(RemoteFactory.java:46)
     at turtle.common.server.connect.RemoteProxyFactory.getRemote(RemoteProxyFactory.java:99)
     at turtle.common.server.connect.RemoteProxyFactory.create(RemoteProxyFactory.java:91)
     at turtle.common.server.connect.RemoteProxyFactory.createProxy(RemoteProxyFactory.java:52)
     at turtle.server.runtime.registry.RegistryFacade.connectToRegistry(RegistryFacade.java:932)
     at turtle.server.runtime.registry.RegistryFacade.getGenericRegistryBI(RegistryFacade.java:987)
     at turtle.server.runtime.registry.RegistryFacade.unbindObjectsInProject(RegistryFacade.java:857)
     at turtle.registry.ProjectRegistrar$1$1.run(ProjectRegistrar.java:130)
     at java.security.AccessController.doPrivileged(Native Method)
     at javax.security.auth.Subject.doAs(Subject.java:337)
     at turtle.common.security.auth.AuthenticatorBase.doAs(AuthenticatorBase.java:387)
     at turtle.registry.ProjectRegistrar$1.run(ProjectRegistrar.java:172)
     at java.util.TimerThread.mainLoop(Timer.java:512)
     at java.util.TimerThread.run(Timer.java:462)

Has anyone been able to get this to work? Or can anyone confirm that this is a bug?
As a simpler test, I modified the UserManagementBean of the Car Rental example application. I added some code in the register method that serializes and deserializes the Handle object obtained from the SessionContext.getEJBObject().getHandle() method. The serialization completes without issue. However, I get the same error when trying to deserialize the Handle object:
java.lang.ClassNotFoundException: Loader /L_service:ejb could not load class com.sap.engine.examples.epf.ejb.controller.customer.UserManagementHome
     at com.sap.vmc.core.impl.sapjvm.sharing.NativeSharedClassLoaderImpl.loadClass(NativeSharedClassLoaderImpl.java:609)
     at java.lang.ClassLoader.loadClass(ClassLoader.java:265)
     at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:333)
     at java.lang.Class.forName0(Native Method)
     at java.lang.Class.forName(Class.java:242)
     at java.io.ObjectInputStream.resolveProxyClass(ObjectInputStream.java:656)
     at java.io.ObjectInputStream.readProxyDesc(ObjectInputStream.java:1499)
     at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1462)
     at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1698)
     at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1304)
     at java.io.ObjectInputStream.readObject(ObjectInputStream.java:349)
     at com.sap.engine.services.ejb3.runtime.impl.LocalHandleDelegate.readStub(LocalHandleDelegate.java:177)
     at com.sap.engine.services.ejb3.runtime.impl.ServerHandleDelegate.readStub(ServerHandleDelegate.java:64)
     at com.sap.engine.services.ejb3.runtime.impl.LocalHandleDelegate.readEJBHome(LocalHandleDelegate.java:101)
     at com.sap.engine.services.ejb3.runtime.impl.StatelessHomeHandleImpl.readObject(StatelessHomeHandleImpl.java:73)
     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 java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:946)
     at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1818)
     at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1718)
     at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1304)
     at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1917)
     at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1841)
     at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1718)
     at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1304)
     at java.io.ObjectInputStream.readObject(ObjectInputStream.java:349)
     at com.sap.engine.examples.epf.ejb.controller.customer.SerializationUtils.deSerialize(SerializationUtils.java:33)
     at com.sap.engine.examples.epf.ejb.controller.customer.SerializationUtils.deepClone(SerializationUtils.java:59)
     at com.sap.engine.examples.epf.ejb.controller.customer.UserManagementBean.register(UserManagementBean.java:75)

CUSTOM CLASSLOADER ISSUES WITH APPLET

HELP WOULD BE MUCH APPRECIATED FROM ANYONE KNOWING ABOUT CLASSLOADER ISSUES
I have an applet that must be dynamically extensible at run time. I am using
the URLClassLoader to support dynamic class loading for the modules the
applet must contain on the specific page.
Each jar file contains:
* The class files, icons and other resources for the module
* a file called META-INF/ext.initializers
The initializers file contains a list of classes which implement my
ExtensionInitializer interface. I am using
ClassLoader.getResources("META-INF/ext.initializers") to obtain these lists.
This works fine.
Each class implementing ExtensionInitializer is responsible for attaching
various objects to the main applet i.e extra GUI items, information
processors etc...
The problem I am getting is that although the class loader will load
resources ok, it WILL NOT LOAD the damn classes!!!
Here's the snippet of code where it runs into trouble:
while (it.hasNext())
String name = (String)it.next();
Class c = classLoader.loadClass(name);
ExtensionInitializer initializer =
(ExtensionInitializer)c.newInstance();
initializer.preInitialize(session);
System.out.println("Pre Initialized: " + initializer);
// Remember we initialized this so we can call postInitialize
later
initializers.add(initializer);
The output proving that the URLs were infact added and the ext.initializers
list was processed (containing the class name
com.katalyzt.toolbox.ext.cm.gui.CaseInitializer):
Extension URLs
file:/C:/java/Katalyzt/lib/ext/Case.jar
file:/C:/java/Katalyzt/lib/ext/WorkArea.jar
Found initializer:
jar:file:/C:/java/Katalyzt/lib/ext/Case.jar!/META-INF/ext.initializers
java.lang.ClassNotFoundException:
com.katalyzt.toolbox.ext.cm.gui.CaseInitializer
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:297)
at java.lang.ClassLoader.loadClass(ClassLoader.java:253)
at
com.katalyzt.toolbox.gui.AppletExtensionLoader.loadExtensions(AppletExtensio
nLoader.java:97)
at
com.katalyzt.toolbox.gui.ToolboxSessionPanel.preInitialize(ToolboxSessionPan
el.java:70)
at
com.katalyzt.toolbox.gui.ToolboxSessionApplet.init(ToolboxSessionApplet.java
:28)
at sun.applet.AppletPanel.run(AppletPanel.java:344)
at java.lang.Thread.run(Thread.java:484)
java.lang.ClassNotFoundException:
com.katalyzt.toolbox.ext.cm.gui.CaseInitializer
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:297)
at java.lang.ClassLoader.loadClass(ClassLoader.java:253)
at
com.katalyzt.toolbox.gui.AppletExtensionLoader.loadExtensions(AppletExtensio
nLoader.java:97)
at
com.katalyzt.toolbox.gui.ToolboxSessionPanel.preInitialize(ToolboxSessionPan
el.java:70)
at
com.katalyzt.toolbox.gui.ToolboxSessionApplet.init(ToolboxSessionApplet.java
:28)
at sun.applet.AppletPanel.run(AppletPanel.java:344)
at java.lang.Thread.run(Thread.java:484)
Found initializer:
jar:file:/C:/java/Katalyzt/lib/ext/Case.jar!/META-INF/ext.initializers

It is the standard secure java.net.URLClassLoader that I am using to load the classes. I create an instance of this with a URL[] specifying the urls of dynamic extension jars. Someone suggested that security restrictions may be to blame but it also occurs with the applet viewer with all class loading restrictions turned off. The resource files contained in the jars do become available. Someone suggested was signing the jars which I will check today.

Third-party jars not visible to EJB's and servlets.

Hi, This is an unanswered post in an newsgroup which exactly displays our
current problem,
Extract Begins -->
"I've got a WebApp with classloading issues while running WebLogic 5.1.
According to the JSDK 2.2 API, if I include third-party classes in
WEB-INF/lib, my EJBs and servlets should be able to load any jar'ed classes
inside. In practice, however, it seems to make no difference. My EJB always
comes back with a NoClassDefFound error for xerces.jar that's in WEB-INF/lib
(and I've even tried adding it to the EJB JAR itself with no change).Of
course, if I put Xerces in the server's classpath, there are no problems but
that's a road I don't want to go down.How can I tell my EJB's to load
third-party classes from the WEB-INF/lib directory of the WAR file? I'd
appreciate your insight. <-- End
We are busy migrating one of our apps from 5.1 to 6.1, What we have done
thus far and fairly successfully is the following,
We packaged all the jsps, WEB-INF, html, images into a WAR file and then
packed all EJB's, META-INF and classes to which the ejbs refer, into an EAR
file.
EMARKET_APPS/
+myjsp.jsp
+myhtml.html
+images
+WEB-INF/+
|
+classes/+
|
+myclass1.class
+myclass2.class
|
+lib/+
|
+OReily.jar
+jts.jar
+xerces-1_4_1.jar
+junit.jar
+jcschart110Kwl.jar
|
+web.xml
+weblogic.xml
+META-INF/+
|
+applications.xml
+ejbs/+
|
+myejb1.jar
+myejb2.jar
+lib/+
|
+classes.jar
Please advise.
Rgs Roly

Have you tried to include the jars in the Class path entry in the manifest file.
That should work eventhough I haven't tried it yet (fighting with ear deployement
and I must say WLS seems to be winning). I'll get back to when I've tried it.
There is a VERY good article on theserverside.com regarding class loaders and
EAR/WAR/EJBs at http://www.theserverside.com/resources/articles/J2EE-Deployment/chapter.html
Good luck
/erik

Weblogic Classloader issues

I place my WAR file for deployment in the domain/applications directory for automatic deployment when the Weblogic server starts. This usually works fine. But, for unkown reasons, I am now getting a ClassNotFoundException after I added some new JARS to the appliation's WEB-INF/lib directory. The Class that it complains about is in one of the new JARs, the package name is correct, and the JAR is getting deployed. When I deploy the application manually, I the problem goes away. Deploying manually means that I make the applicatoin directory myself under domain/applications and the unwar it into that directory.
I'm using Weblogic 8.1 SP3 on a Windows Server 2000.

Hi
The problem with t3config and disableWeblogicClassPath (described below) also
seems to exist in WLS 5.1 - sp2.
Regards
Steffen Bering Jensen
Systems Architect * Nordija ApS * Denmark
[email protected] wrote:
I hope that it is fixed in post 4.5.0 versions.
[email protected] wrote:
Steffen
I ran into the same problem with 4.5.0 while using t3config
I would like to know the version you are working with.
Support, please tell me it can be fixed.
Madhu
"Steffen B. Jensen" wrote:
Hi
Due to some classloader issues we start up WebLogic with the following
system property:
-Dweblogic.system.disableWeblogicClassPath=true
and no weblogic.class.path property.
However, when trying to set this up for an NT service using wlconfig,
wlconfig seems to insist on a weblogic.class.path system property. When
that property exists (although empty) WebLogic will not boot.
It seems that you can't run weblogic as an NT service with
weblogic.system.disableWeblogicClassPath=true?
Regards
Steffen Bering Jensen
Systems Architect * Nordija ApS * Denmark

WebLogic 11g EAR EJB Classpath and class loaders

All,
I have been having issues migrating Spring based EJB applications from OC4J to WebLogic 11g (10.3.1). I have been in communication with Oracle who has suggested a work around however I am keen to see if anyone else can suggest a solution.
The application is dependant on stateless session EJB beans that communicate with a Spring managed service tier to perform the business logic and database access. PitchFork is used to inject the Spring managers into the EJB’s using the spring-ejb-jar.xml configuration file. Note originally I was using the SpringBeanAutowiringInterceptor however I could not get this to work. See WebLogic 11g and Spring beens injected into EJB for details.
When the application is deployed packaging all the dependant jars within the APP-INF\lib folder I get a verity of errors from the following InvalidClassException, NoSuchMethodError, AbstractMethodError and IllegalArgumentException. I am using Spring 2.5.3 to match the supported WebLogic version. Note within the EAR application.xml the library-directory is set to APP-INF/lib. The issue appears to be Spring, PitchFork, commons-logging and aspectj libraries are being loaded form WebLogic and do not have visibility on jars within the application or have been modified when bundled for WebLogic. An example of this is the PitchFork jar within WebLogic has been changed excluding the spi package resulting in java.lang.ClassNotFoundException: org.springframework.jee.spi.PitchforkUtilsImpl errors.
Moving the jars to the domain library path does not resolve any of the issues. I have been unable to successfully deploy the application picking up the application jars using the prefer-application-packages configuration.
Oracle has advised me to deploy the libraries into the WebLogic system classpath by modifying the startWebLogic command to load the libraries into the classpath. I am concerned that modifying the system classpath will result in an unstable WebLogic server as I will be replacing modified jar files packages with WebLogic (such as PitchFork). This will also limit the applications that can be deployed within the server as each application must use the same libraries and versions (as the application ibraries are leing ignored).
Has anyone else hit this issue and corrected it? Can anyone think of an alternative solution?
Regards
Neil

Hi,
I am in the process of updating the tracking bug# 331569 with copies of the eclipse EAR/WAR projects and the EAR for these scenarios. Here are some details on how I got past the 2nd CCE on the org.eclipse.persistence.jpa.PersistenceProvider class (not the javax one)
https://bugs.eclipse.org/bugs/show_bug.cgi?id=331569
Essentially an SE persistence unit running both JPA 2.0 api and the 2.0 XSD schema work fine. I will next retest the EE case with variations of the 3 types of injection on the SSB or Servlet.
Update: There are 3 (possibly 4) issues here (all of these may become obsolete when the next WLS version ships)Initially I got the same 2.0 schema error and the ClassCastException on org.eclipse.persistence.jpa.PersistenceProvider
It turns out that my import of the 2 eclipse projects from my bug # 296271 for WebLogic 10.3.2.0 lost their facets(specifically the dynamic web facet) because I associated them with a different WebLogic 10.3.3.0. - this caused the CCE I was experiencing like Sri.
Anyways, after creating an EAR/Web project combination from scratch in eclipse associated with the 10.3.3.0 instance - I predeployed/deployed/ran fine - even with the 2.0 schema - in SE bootstrap mode (no EE yet).
Reproduction Procedure:
redoing project from scratch as I noticed that the war was not at the root of the ear - it was a jar in the app-inf/lib dir - my imported eclipse project was not referenced correctly as a web module facet- create empty EAR and WAR project with references
- download and open my EAR and WAR project code from bug # 296271
https://bugs.eclipse.org/bugs/show_bug.cgi?id=296271
- do essentially all the steps in the page below (I paraphrase for re-verification)
http://wiki.eclipse.org/EclipseLink/Development/JPA_2.0/weblogic#DI_1.1:_Alternative_3:_Application_Level_Shared_Library_-InUse
- copy applicationService, entity and FrontController servlet code into new projects
- create persistence.xml and MANIFEST.MF manifest in src\META-INF
- update manifest
Class-Path: APP-INF/lib/eclipselink.jar
APP-INF/lib/javax.persistence_2.0.0.v200911041116.jar
- copy both javax.persistence 2.0 and eclipselink 2.x jars to APP-INF/lib
- change ordering of WebLogic library modules classpath reference (javax.persistence 1.0) to ear reference (2.0 version)
- update web.xml with servlet tags
- update weblogic.xml with new context root
- make the persistence unit name the same in persistence.xml and ApplicationManagedService
- update weblogic-application.xml with prefer-application-packages overrides
<wls:prefer-application-packages>
<wls:package-name>javax.persistence.*</wls:package-name>
<wls:package-name>org.eclipse.persistence.*</wls:package-name>
</wls:prefer-application-packages>
- enable server redirect logging

<property name="eclipselink.logging.logger" value="DefaultLogger"/>
- start WebLogic 10.3.3.0
- deploy (run on) server from eclipse or export ear to auto deploy directory
1) JPA 2.0 XSD usage on 10.3.3.0
- I reproduced this issue with a bad EAR
- was able to use the 2.0 schema within the WAR-only application managed EAR
persistence.xml<persistence version="2.0" xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd">

<persistence-unit name="example2" transaction-type="JTA">
<provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
<jta-data-source>localJTA</jta-data-source>
<class>org.eclipse.persistence.example.business.Cell</class>
<shared-cache-mode>NONE</shared-cache-mode>
<properties>
<property name="eclipselink.target-server" value="WebLogic_10"/>
<property name="eclipselink.logging.level" value="FINEST"/>
<property name="eclipselink.target-database" value="Derby"/>

<property name="eclipselink.logging.logger" value="DefaultLogger"/>



</properties>
</persistence-unit>
</persistence>
2) CCE on JPA provider implementation class
Error instantiating the Persistence Provider class org.eclipse.persistence.jpa.PersistenceProvider of the PersistenceUnit example2: java.lang.ClassCastException: org.eclipse.persistence.jpa.PersistenceProvider
- I reproduced and fixed this one (was Eclipse project facet issue) - EAR was wrong
- was able to run JPA 2.0 code fine on an SE PU (predeploy/deploy together)
- EE injection should not work but I will post an example EAR anyway
log[EL Example]: enterprise: JPA 2.0 Metamodel: MetamodelImpl@56287508 [ 3 Types: , 1 ManagedTypes: , 1 EntityTypes: , 0 MappedSuperclassTypes: , 0 EmbeddableTypes: ]
3) CCE on JPA spec interface class
- I could not reproduce this one
Re: WebLogic 11g EAR EJB Classpath and class loaders
Error processing persistence unit PT of module pt: Error instantiating the Persistence Provider class org.eclipse.persistence.jpa.PersistenceProvider of the PersistenceUnit PT: java.lang.ClassCastException: org.eclipse.persistence.jpa.PersistenceProvider cannot be cast to javax.persistence.spi.PersistenceProvider
4) CCE on fallback Kodo JPA provider (if an invalid say 2.1 JPA XSD schema is referenced)
java.lang.ClassCastException: kodo.persistence.PersistenceProviderImpl
at javax.persistence.Persistence.findAllProviders(Persistence.java:186)
java.lang.NoSuchMethodError: javax/persistence/EntityManager.getMetamodel()Ljavax/persistence/metamodel/Metamodel;
- reproduced by using the 1.0 javax.persistence jar (but named as the 2.0 one in APP-INF/lib)
- fixed by using either the 1.0 or 2.0 JPA XSD schema and using the correct 2.0 spec jar
thank you
/michael

I have a serious (and bizarre!) issue with my novation impulse (Although i've tried it with two other keyboards and i still have the same problem) and its compatibility with mainstage 3

i have a serious (and bizarre!) issue with my novation impulse (Although i've tried it with two other keyboards and i still have the same problem) and its compatibility with mainstage 3.
the problem is best explained on the following one - page thread:
https://discussions.apple.com/thread/3951518?start=0&tstart=0
(Clearly i'm not alone in this problem, although i think i figured out what's going wrong a little more than he did...read on!)
his solution, to put mainstage in jump mode, is very unsatisfactory to me, as it bounces all of a sudden to drastically different settings.
basically, my analysis is that my controller is NOT receiving MIDI date from mainstage. in other words, mainstage knows what my controller is doing, but my controller doens't know what mainstage is doing.
let's say i turn the knob all the way to the right ... 127...and the virtual fader goes to the right like it's supposed to.
now...next...let's say i change to a different patch, where that same VIRTUAL fader is not at the max clockwise position..maybe it's only at 1pm. now when i turn the physical knob to the RIGHT, the midi data is still at 127 on the controller! it didn't "reset" to sync up with the new level (say 80 or so) setting on the new patch. so i can't increase that new setting of 80 by continuing to turn the knob to the right. i have to turn it all the way to zero,...and then continue PAST zero until the controller thinks that IT is at 0...at that point the controller and mainstage are in agreement, and things work fine....so bascially, the keyboard thinks the level is at max...but mainstage thinks the level is at 1pm.
i am using Logic 9, and i have a macbook pro 2.9 Ghz I7 with 8 gigs of memory and OS X 10.8.4

Hi Josh,
Thanks for taking the time to contact us here a Novation for technical support. Lets continue to correspond via email so we can get your issue resolved.
Thanks.
Mike Towns

I have a problem in this that i want to paas a form in a case that when user pres n then it must go to a form but error arises and not working good and threading is not responding

made in cosmos help please need it
using System;
using Cosmos.Compiler.Builder;
using System.Threading;
using System.Windows.Forms;
namespace IUOS
    class Program
        #region Cosmos Builder logic
        // Most users wont touch this. This will call the Cosmos Build tool
        [STAThread]
        static void Main(string[] args)
            BuildUI.Run();
        #endregion
        // Main entry point of the kernel
        public static void Init()
            var xBoot = new Cosmos.Sys.Boot();
            xBoot.Execute();
            Console.ForegroundColor = ConsoleColor.DarkBlue;
            a:
            Console.WriteLine("------------------------------");
            Console.WriteLine("WELCOME TO THE NEWLY OS MADE BY THE STUDENTS OF IQRA UNIVERSITY!");
            Console.WriteLine("------------------------------");
            Console.WriteLine();
            Console.WriteLine();
            Console.WriteLine();
            Console.WriteLine("\t _____
            Console.WriteLine("\t|   |       |            |
|          |      |");
            Console.WriteLine("\t|   |       |            |
|          |      |");
            Console.WriteLine("\t|   |       |            |
|          |      |");
            Console.WriteLine("\t|   |       |            |
|          |      |___________");
            Console.WriteLine("\t|   |       |            |
|          |                  |");
            Console.WriteLine("\t|   |       |            |
|          |                  |");
            Console.WriteLine("\t|   |       |            |
|          |                  |");
            Console.WriteLine("\t|   |       |            |
|          |                  |");
            Console.WriteLine("\t|   |       |            |
|          |                  |");
            Console.WriteLine("\t|_____|       |____________|         |____________|      ____________");
            string input;
            Console.WriteLine();
            Console.Write("\nAbout OS     : a");
            Console.Write("\nTo Shutdown : s");
            Console.Write("\nTo Reboot    : r");
            Console.Write("\nStart Windows Normaly : n");
            Console.WriteLine();
            input = Console.ReadLine();
            if (input == "s" || input == "S"){
                Cosmos.Sys.Deboot.ShutDown();
            else
            if (input == "r" || input == "R"){
                Cosmos.Sys.Deboot.Reboot();
            else
            if (input == "a" || input == "A"){
                Console.ForegroundColor = ConsoleColor.DarkBlue;
                Console.Clear();
                Console.WriteLine("\n\n\n-------------------------------------");
                Console.WriteLine("version: DISPLAYS OS VERSION");
                Console.WriteLine("about: DISPLAYS INFO ABOUT ANGRY OS");
                Console.WriteLine("hello or hi: DISPLAYS A HELLO WORLD");
                Console.WriteLine("MESSAGE THAT WAS USED TO TEST THIS OS!!");
                Console.WriteLine("-----------------------------------");
                Console.Write("You Want to know : ");
                input = Console.ReadLine();
                if (input == "version"){
                    Console.WriteLine("--------------------");
                    Console.WriteLine("OS VERSION 0.1");
                    Console.WriteLine("--------------------");
                else
                if (input == "about"){
                    Console.WriteLine("--------------------------------------------");
                    Console.WriteLine("OS IS DEVELOPED BY Qazi Jalil-ur-Rahman & Syed Akber Abbas Jafri");
                    Console.WriteLine("--------------------------------------------");
                Console.Write("Want to go back to the main window");
                Console.Write("\nYes : ");
                string ans = Console.ReadLine();
                if (ans == "y" || ans == "Y")
                    goto a;
                    Thread.Sleep(10000);
                else
                if (input == "n" || input == "N")
                    Thread.Sleep(5000);
                    Console.Clear();
                    for (int i = 0; i <= 0; i++){
                        Console.Write("\n\n\n\n\t\t\t\t\t ____        ____   ___
                        Console.Write("\n\t\t|\t\t | |      |    |
|   | | | | |");
                        Console.Write("\n\t\t|\t|    | |---- |    |
|   | | | | |---");
                        Console.Write("\n\t\t|____|____| |____ |___ |____ |___| |    | |___");
                        Thread.Sleep(500);
                    Thread.Sleep(5000);
                    Console.Clear();
                    BootUserInterface();
                    Console.ReadLine();
//                    Form1 fo = new Form1();
                else{
                    for (int i = 0; i <= 5; i++){
                        Console.Beep();
                        Thread.Sleep(1000);
                        goto a;
            while (true);
        private static void BootUserInterface() {
            Thread t = new Thread(UserInterfaceThread);
            t.IsBackground = true;
            t.SetApartmentState(ApartmentState.STA);
            t.Start();
        private static void UserInterfaceThread(object arg) {
            Form1 frm = new Form1(); // use your own
            Application.Run(frm);

Hi
Jalil Cracker,
>>when user pres n then it must go to a form but error arises and not working good and threading is not respondin
Could you post the error information? And which line caused this error？
If you want to show Form1, you can use form.show() method
Form1 frm = new Form1();
frm.Show();
In addition, Cosmos is an acronym for C# Open Source Managed Operating System. This is not Microsoft product.If the issue is related to Cosmos, it would be out of our support. Thanks for your understanding. And you need raise an issue at Cosmos site.
Best regards,
kristin
We are trying to better understand customer views on social support experience, so your participation in this interview project would be greatly appreciated if you have time. Thanks for helping make community forums a great place.
Click
HERE to participate the survey.

Mail and Address Book Issues in 10.4.5

Hello:
I recently updated to 10.4.5 and have some issues with mail and address book.
1. MAIL: All the mail on my machine has been "reformatted" for lack of a better term. Each line in a paragraph is about 1.5" above the next. This is the same for all messages. This just appeared after I updated to 10.4.5. Suggestions? Has anyone else experienced this? If so, what was the solution?
2. ADDRESS BOOK: All of my addresses just have the name. Apparently, everything else has disappeared (Phone, e-mail, notes, etc.) Ex: John Smith... That is all I have for all 346 records. Naturally, I have the data backed up on .mac, but before I re-sync (assuming that works) I want to resolve the issue to prevent it from happening again. I have tried renaming files in the user>library>application support>address book from AddressBook.data.previous to just AddressBook.data to no avail. Any suggestions?
Thanks in advance!
Richard
G5 1.8 Single Mac OS X (10.4.5)
G5 1.8 Single Mac OS X (10.4.5)

You may want to review recent threads about similar problems in this forum before re-syncing your data with .Mac. Yes, it might work, but not the way you expect...
Lost all of my contacts in Address Book
address book completely empty!
iMac G5 17" (iSight) Mac OS X (10.4.4)

JRun Thread Pool Issue

I'm running CF 9.0.1 on Ubuntu on an "Medium" Amazon EC2 instance. CF has been crashing intermittently (several times per day). At such times, running top gets me this (or something similar):
PID
USER
PR
NI
VIRT
RES
SHR
S
%CPU
%MEM
TIME+COMMAND
15855
wwwrun
20
0
1762m
730m
20m
S
99.3
19.4
13:22.96 coldfusion9
So, it's obviously consuming most of the server resources. The following error has been showing up in my cfserver.log in the leadup to each crash:
java.lang.RuntimeException: Request timed out waiting for an available thread to run. You may want to consider increasing the number of active threads in the thread pool.
If I run /opt/coldfusion9/bin/coldfusion status, I get:
Pg/Sec DB/Sec CP/Sec Reqs Reqs Reqs AvgQ   AvgReq AvgDB Bytes Bytes
Now Hi Now Hi Now Hi Q'ed Run'g TO'ed Time   Time   Time   In/Sec Out/Sec
0   0   0   0   -1 -1 150   25    0     0      -1352560      0      0
In the administrator, under Server Settings > Request Tuning, the setting for Maximum number of simultaneous Template requests is 25. So this makes sense so far. I could just increase the thread pool to cover these sort of load spikes. I could make it 200. (Which I did just now as a test.)
However, there's also this file /opt/coldfusion9/runtime/servers/coldfusion/SERVER-INF/jrun.xml. And some of the settings in there appear to conflict. For example, it reads:
<service class="jrunx.scheduler.SchedulerService" name="SchedulerService">
<attribute name="bindToJNDI">true</attribute>
<attribute name="activeHandlerThreads">25</attribute>
<attribute name="maxHandlerThreads">1000</attribute>
<attribute name="minHandlerThreads">20</attribute>
<attribute name="threadWaitTimeout">180</attribute>
<attribute name="timeout">600</attribute>
</service>
Which a) has fewer active threads (what does this mean?), and b) has a max threads that exceed the simultaneous request limit set in the admin. So, I'm not sure. Are these independent configs that need to be made to match manually? Or is the jrun.xml file supposed to be written by the CF Admin when changes are made there? Hmm. But maybe this is different because presumably the CF Scheduler should only use a subset of all available threads, right...so we'd always have some threads for real live users. We also have this in there:
<service class="jrun.servlet.http.WebService" name="WebService">
<attribute name="port">8500</attribute>
<attribute name="interface">*</attribute>
<attribute name="deactivated">true</attribute>
<attribute name="activeHandlerThreads">200</attribute>
<attribute name="minHandlerThreads">1</attribute>
<attribute name="maxHandlerThreads">1000</attribute>
<attribute name="mapCheck">0</attribute>
<attribute name="threadWaitTimeout">300</attribute>
<attribute name="backlog">500</attribute>
<attribute name="timeout">300</attribute>
</service>
This appears to have changed when I changed the CF Admin setting...maybe...but it's the activeHandlerThreads that matches my new maximum simulataneous requests setting...rather than the maxHandlerThreads, which again exceeds it. Finally, we have this:
<service class="jrun.servlet.jrpp.JRunProxyService" name="ProxyService">
<attribute name="activeHandlerThreads">200</attribute>
<attribute name="minHandlerThreads">1</attribute>
<attribute name="maxHandlerThreads">1000</attribute>
<attribute name="mapCheck">0</attribute>
<attribute name="threadWaitTimeout">300</attribute>
<attribute name="backlog">500</attribute>
<attribute name="deactivated">false</attribute>
<attribute name="interface">*</attribute>
<attribute name="port">51800</attribute>
<attribute name="timeout">300</attribute>
<attribute name="cacheRealPath">true</attribute>
</service>
So, I'm not certain which (if any) of these I should change and what exactly the relationship is between maximum requests and maximum threads. Also, since several of these list the maxHandlerThreads as 1000, I'm wondering if I should just set the maximum simultaneous requests to 1000. There must be some upper limit that depends on available server resources...but I'm not sure what it is and I don't really want to play around with it since it's a production environment.
I'm not sure if it pertains to this issue at all, but when I run a ps aux | grep coldfusion I get the following:
wwwrun   15853 0.0 0.0   8704   760 pts/1
S
20:22   0:00 /opt/coldfusion9/runtime/bin/coldfusion9 -jar jrun.jar -autorestart -start coldfusion
wwwrun   15855 5.4 18.2 1678552 701932 pts/1
Sl
20:22   1:38 /opt/coldfusion9/runtime/bin/coldfusion9 -jar jrun.jar -start coldfusion
There are always these two and never more than these two processes. So there does not appear to be a one-to-one relationship between processes and threads. I recall from an MX 6.1 install I maintained for many years that additional CF processes were visible in the process list. It seemed to me at the time like I had a process for each thread...so either I was wrong or something is quite different in version 9 since it's reporting 25 running requests and only showing these two processes. If a single process can have multiple threads in the background, then I'm given to wonder why I have two processes instead of one...just curious.
So, anyway, I've been experimenting while composing this post. As noted above I adjusted the maximum simulataneous requests up to 200. I was hoping this would solve my problem, but CF just crashed again (rather it slogged down and requests started timing out...so effectively "crashed"). This time, top looked similar (still consuming more than 99% of the CPU), but CF status looked different:
Pg/Sec DB/Sec CP/Sec Reqs Reqs Reqs AvgQ   AvgReq AvgDB Bytes Bytes
Now Hi Now Hi Now Hi Q'ed Run'g TO'ed Time   Time   Time   In/Sec Out/Sec
0   0   0   0   -1 -1 0     150   0     0      0      0      0      0
Obviously, since I'd increased the maximum simultaneous requests, it was allowing more requests to run simultaneously...but it was still maxing out the server resources.
Further experiments (after restarting CF) showed me that the server became unusably slogged after about 30-35 "Reqs Run'g", with all additional requests headed for an inevitible timeout:
Pg/Sec DB/Sec CP/Sec Reqs Reqs Reqs AvgQ   AvgReq AvgDB Bytes Bytes
Now Hi Now Hi Now Hi Q'ed Run'g TO'ed Time   Time   Time   In/Sec Out/Sec
0   0   0   0   -1 -1 0     33    0     0      -492   0      0      0
So, it's clear that increasing the maximum simultaneous requests has not helped. I guess what it comes down to is this: What is it having such a hard time with? Where are these spikes coming from? Bursts of traffic? On what pages? What requests are running at any given time? I guess I simply need more information to continue troubleshooting. If there are long-running requests, or other issues, I'm not seeing it in the logs (although I do have that option checked in the admin). I need to know which requests exactly are those responsible for these spikes. Any help would be much appreciated. Thanks.
~Day

I really appreciate your help. However, I haven't been able to find the JRun Thread settings you describe above.
Under Request Tuning, I see:
Server Settings > Request Tuning
Request Limits
Maximum number of simultaneous Template requests
Restricts the number of simultaneously processed requests. Use this setting to increase overall system performance for heavy load applications. Requests beyond the specified limit are queued. On Standard Edition, you must restart ColdFusion to enable this setting.
Maximum number of simultaneous Flash Remoting requests
The number of Flash Remoting requests that can be processed concurrently.
Maximum number of simultaneous Web Service requests
The number of Web Service requests that can be processed concurrently.
Maximum number of simultaneous CFC function requests
The number of ColdFusion Component methods that can be processed concurrently via HTTP. This does not affect invocation of CFC methods from within CFML, only methods requested via an HTTP request.
Tag Limit Settings
Maximum number of simultaneous Report threads
The maximum number of ColdFusion reports that can be processed concurrently.
Maximum number of threads available for CFTHREAD
The maximum number of threads created by CFTHREAD that will be run concurrently. Threads created by CFTHREAD in excess of this are queued. On Standard Edition, the maximum limit is 10.
And under Java and JVM, I see:
Server Settings > Java and JVM
    Java and JVM settings control the way ColdFusion starts the Java Virtual Machine when it starts. You can control settings like what classpaths are used and how memory is allocated as well as add custom command line arguments. Changing these settings requires restarting ColdFusion. If you enter an incorrect setting, ColdFusion may not restart properly.
   Backups of the jvm.config file are created when you hit the submit button. You can use this backup to restore from a critical change.
   Java Virtual Machine Path
Specifies the location of the Java Virtual Machine.
   Minimum JVM Heap Size (MB)         Maximum JVM Heap Size (MB)
   The Memory Size settings determine the amount of memory that the JVM can use for programs and data.
   ColdFusion Class Path
Specifies any additional class paths for the JVM, with multiple directories separated by commas.
   JVM Arguments
-server -Dsun.io.useCanonCaches=false -XX:MaxPermSize=192m -XX:+UseParallelGC -Xbatch -Dcoldfusion.rootDir={application.home}/../ -Dcoldfusion.libPath={application.home}/../lib
Specifies any specific JVM initialization options, separated by spaces.
I did go take a look at FusionReactor and found it's not free (which would be fine, of course, if it would actually help). It looks like there's a fully functional demo, which is cool...but I've haven't been able to get it to install yet, so we'll see.
Thanks again!
~Day
(By the way, I've cross-posted this inquiry on StackOverflow. So if you're able to help me arrive at a solution you might want to answer there as well.)

ClassNotFoundException in EJB's and Threads (Classloader issue)

Similar Messages

Maybe you are looking for