How Are Application Clients Run By OC4J?

Since no one seems to have an answer to my post concerning utilizing java.util.Timer and java.util.TimerTask in application clients started automatically by OC4J, I will generalize my question.
If I start the client myself, I would type the following at the command line:
java -jar myClient.jar myArgument
This is fairly obvious. My question is this: how exactly does OC4J automatically start the client assuming a client-module with auto-start="true" in orion-application.xml? I would like as much technical minutiae (e.g. reflection, wrappers involved, etc.)as you can provide since I need to know the gory details if I am to attempt to solve my challenging problem.
Thanks very much for your insight.

When auto-start="true," we are required to provide the a value for the user attribute of client-module. Of course, that is not required when I run the client manually. Is there a user that is understood when I run the client manually? There is a user specified in the jndi.properties in the client jar file, but I am not sure if that refers to the same thing. (I thought that was more to authenticate the client to the EJB container, whereas I imagine the user attribute is for authenticating the user to the client) I am not sure how the users are related if at all, so I would appreciate any insight. Thanks.

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We have some EJB's running in an OC4J, which are acessed by a Swing client.
Everything works fine so far.
Now we want to deploy this client as an APPLICATION-CLIENT to the OC4J and launch it on the client-machine in a CLIENT-CONTAINER.
The JDeveloper doc says:
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To know, what the subject is have a look here:
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I understand that this thread is quite old, but I'd like to ask if this has ever been answered adequately and, if so, what the answer was?
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I unable to run ejb with application client using oc4j j2ee container

Hi,
I have installe oracle9i (1.0.2.2) oc4j j2ee container.
I unable to run the ejbs . please help me how to run ejbs with application client and which files are shall configure.
See the client application is :
public static void main (String []args)
try {
//Hashtable env = new Hashtable();
//env.put("java.naming.provider.url", "ormi://localhost/Demo");
//env.put("java.naming.factory.initial", "com.evermind.server.ApplicationClientInitialContextFactory");
//env.put(Context.SECURITY_PRINCIPAL, "guest");
//env.put(Context.SECURITY_CREDENTIALS, "welcome");
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DemoHome home= (DemoHome)PortableRemoteObject.narrow(homeObject, DemoHome.class);
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}catch ( Exception e )
System.out.println("::::::Error:::::: ");
e.printStackTrace();
System.out.println("End DemoClient....\n");
When I am running client application I got this type of Exception
java.lang.SecurityException : No such domain/application: sampledemo
at com.evermind.server.rmi.RMIConnection.connect(RMIConnection.java : 2040)
at com.evermind.server.rmi.RMIConnection.connect(RMIConnection.java : 1884)
at com.evermind.server.rmi.RMIConnection.lookup(RMIConnection.java : 1491)
at com.evermind.server.rmi.RMIServer.lookup(RMIServer.java : 323)
at com.evermind.server.rmi.RMIContext.lookup(RMIConext.java : 106)
at com.evermind.server.administration.LazyResourceFinder.lookup(LazyResourceFinder.java : 59)
at com.evermind.server.administration.LazyResourceFinder.getEJBHome(LazyResourceFinder.java : 26)
at com.evermind.server.Application.createContext(Application.java: 653)
at com.evermind.server.ApplicationClientInitialContext.getInitialContext(ApplicationClientInitialContextFactory.java :179 )
at javax.naming.spi.NamingManager.getInitialContext(NamingManger.java : 246)
at javax.naming.InitialContext.getDefaultInitialCtx(InitialContext.java : 246)
at javax.naming.InitialContext.init(InitialContext.java : 222)
at javax.naming.InitialContext.<init>(InitialContext.java : 178)
at DemoClient.main(DemoClient.java : 23)
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<application name="sampledemo" path="../applications/demos.ear" />
demos.ear file Contains following files
application.xml
demobean.jar
Manifest.mf
demobean.jar file contains following files
application-client.xml
Demo.class
DemoBean.class
DemoHome.class
ejb-jar.xml
jndi.properties
Mainifest.mf
Please give me your valuable suggestions. Which are shall i configure .
Thanks & Regards,
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Hi Badri,
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Hello all,
We want to run a pure java application client which is packed with target bean in the same ear file. In the application-client.xml we refer to some EJBs.
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at RemoteConn.main(RemoteConn.java:38)
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Right now I am not using any client descriptor file to run the client program. If the above error is due to not supplying META-INF to the client application, how should I make this folder available to client at runtime?
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Thanks

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c:\ejb
I have also created Helloworld.ear file in c:\ejb using sun application server which contains the following files:
ejb-jar-ic.jar
app-client-ic.jar
sun-j2ee-ri.project
application.xml
sun-application.xml
Manifest.mf
But the problem is that i'm not able to run the HelloWorld.class file successfully from the command prompt. So please suggest me the comand.
Thanx in advance.
Best regards,
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Hi
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at org.springframework.web.context.ContextLoader.createWebApplicationContext(ContextLoader.java:254)
at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:198)
at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:45)
at com.evermind.server.http.HttpApplication.initDynamic(HttpApplication.java:1279)
at com.evermind.server.http.HttpApplication.<init>(HttpApplication.java:848)
at com.evermind.server.ApplicationStateRunning.getHttpApplication(ApplicationStateRunning.java:435)
at com.evermind.server.Application.getHttpApplication(Application.java:592)
at com.evermind.server.http.HttpSite$HttpApplicationRunTimeReference.createHttpApplicationFromReference(HttpSite.java:2280)
at com.evermind.server.http.HttpSite$HttpApplicationRunTimeReference.<init>(HttpSite.java:2199)
at com.evermind.server.http.HttpSite.addHttpApplication(HttpSite.java:1833)
at oracle.oc4j.admin.internal.WebApplicationBinder.bindWebApp(WebApplicationBinder.java:304)
at oracle.oc4j.admin.internal.WebApplicationBinder.bindWebApp(WebApplicationBinder.java:120)
at oracle.oc4j.admin.internal.WebApplicationBinder.bindWebApp(WebApplicationBinder.java:92)
at oracle.oc4j.admin.internal.ApplicationDeployer.bindWebApp(ApplicationDeployer.java:825)
at oracle.oc4j.admin.internal.ApplicationDeployer.doDeploy(ApplicationDeployer.java:276)
at oracle.oc4j.admin.internal.DeployerBase.execute(DeployerBase.java:100)
at oracle.oc4j.admin.jmx.server.mbeans.deploy.OC4JDeployerRunnable.doRun(OC4JDeployerRunnable.java:52)
at oracle.oc4j.admin.jmx.server.mbeans.deploy.DeployerRunnable.run(DeployerRunnable.java:81)
at com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:298)
at java.lang.Thread.run(Thread.java:595)
02-14@08:17:17 INFO (ContextLoader.java:188) - Root WebApplicationContext: initialization started
02-14@08:17:17 INFO (AbstractApplicationContext.java:412) - Refreshing [email protected]f20d33: display name [Root WebApplicationContext]; startup date [Tue Feb 14 08:17:17 GST 2012]; root of context hierarchy
02-14@08:17:18 INFO (XmlBeanDefinitionReader.java:309) - Loading XML bean definitions from class path resource [../config/services-applicationContext.xml]
02-14@08:17:18 ERROR (ContextLoader.java:214) - Context initialization failed
java.lang.NullPointerException: name
at java.util.zip.ZipFile.getEntry(ZipFile.java:247)
at java.util.jar.JarFile.getEntry(JarFile.java:204)
at java.util.jar.JarFile.getJarEntry(JarFile.java:187)
at sun.misc.URLClassPath$JarLoader.getResource(URLClassPath.java:674)
at sun.misc.URLClassPath.getResource(URLClassPath.java:161)
at sun.misc.URLClassPath.getResource(URLClassPath.java:213)
at java.lang.ClassLoader.getBootstrapResource(ClassLoader.java:1113)
at java.lang.ClassLoader.getResource(ClassLoader.java:974)
at oracle.classloader.PolicyClassLoader.findJREResource(PolicyClassLoader.java:1233)
at oracle.classloader.JVMSearchPolicy.findResource(JVMSearchPolicy.java:36)
at oracle.classloader.PolicyClassLoader.getResourceUsingPolicy(PolicyClassLoader.java:1490)
at oracle.classloader.PolicyClassLoader.askParentForResource(PolicyClassLoader.java:1405)
at oracle.classloader.SearchPolicy$AskParent.findResource(SearchPolicy.java:78)
at oracle.classloader.SearchSequence.findResource(SearchSequence.java:142)
at oracle.classloader.PolicyClassLoader.getResourceUsingPolicy(PolicyClassLoader.java:1490)
at oracle.classloader.PolicyClassLoader.askParentForResource(PolicyClassLoader.java:1405)
at oracle.classloader.SearchPolicy$AskParent.findResource(SearchPolicy.java:78)
at oracle.classloader.SearchSequence.findResource(SearchSequence.java:142)
at oracle.classloader.PolicyClassLoader.getResourceUsingPolicy(PolicyClassLoader.java:1490)
at oracle.classloader.PolicyClassLoader.askParentForResource(PolicyClassLoader.java:1405)
at oracle.classloader.SearchPolicy$AskParent.findResource(SearchPolicy.java:78)
at oracle.classloader.SearchSequence.findResource(SearchSequence.java:142)
at oracle.classloader.PolicyClassLoader.getResourceUsingPolicy(PolicyClassLoader.java:1490)
at oracle.classloader.PolicyClassLoader.askParentForResource(PolicyClassLoader.java:1405)
at oracle.classloader.SearchPolicy$AskParent.findResource(SearchPolicy.java:78)
at oracle.classloader.SearchSequence.findResource(SearchSequence.java:142)
at oracle.classloader.PolicyClassLoader.getResourceUsingPolicy(PolicyClassLoader.java:1490)
at oracle.classloader.PolicyClassLoader.askParentForResource(PolicyClassLoader.java:1405)
at oracle.classloader.SearchPolicy$AskParent.findResource(SearchPolicy.java:78)
at oracle.classloader.SearchSequence.findResource(SearchSequence.java:142)
at oracle.classloader.PolicyClassLoader.getResourceUsingPolicy(PolicyClassLoader.java:1490)
at oracle.classloader.PolicyClassLoader.askParentForResource(PolicyClassLoader.java:1405)
at oracle.classloader.SearchPolicy$AskParent.findResource(SearchPolicy.java:78)
at oracle.classloader.SearchSequence.findResource(SearchSequence.java:142)
at oracle.classloader.PolicyClassLoader.getResourceUsingPolicy(PolicyClassLoader.java:1490)
at oracle.classloader.PolicyClassLoader.askParentForResource(PolicyClassLoader.java:1405)
at oracle.classloader.SearchPolicy$AskParent.findResource(SearchPolicy.java:78)
at oracle.classloader.SearchSequence.findResource(SearchSequence.java:142)
at oracle.classloader.PolicyClassLoader.getResourceUsingPolicy(PolicyClassLoader.java:1490)
at oracle.classloader.PolicyClassLoader.getResource(PolicyClassLoader.java:1763)
at java.lang.ClassLoader.getResourceAsStream(ClassLoader.java:1159)
at org.springframework.core.io.ClassPathResource.getInputStream(ClassPathResource.java:139)
at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:322)
at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:296)
at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:143)
at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:178)
at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:149)
at org.springframework.web.context.support.XmlWebApplicationContext.loadBeanDefinitions(XmlWebApplicationContext.java:124)
at org.springframework.web.context.support.XmlWebApplicationContext.loadBeanDefinitions(XmlWebApplicationContext.java:92)
at org.springframework.context.support.AbstractRefreshableApplicationContext.refreshBeanFactory(AbstractRefreshableApplicationContext.java:123)
at org.springframework.context.support.AbstractApplicationContext.obtainFreshBeanFactory(AbstractApplicationContext.java:423)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:353)
at org.springframework.web.context.ContextLoader.createWebApplicationContext(ContextLoader.java:254)
at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:198)
at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:45)
at com.evermind.server.http.HttpApplication.initDynamic(HttpApplication.java:1279)
at com.evermind.server.http.HttpApplication.<init>(HttpApplication.java:848)
at com.evermind.server.ApplicationStateRunning.getHttpApplication(ApplicationStateRunning.java:435)
at com.evermind.server.Application.getHttpApplication(Application.java:592)
at com.evermind.server.http.HttpSite$HttpApplicationRunTimeReference.createHttpApplicationFromReference(HttpSite.java:2280)
at com.evermind.server.http.HttpSite$HttpApplicationRunTimeReference.<init>(HttpSite.java:2199)
at com.evermind.server.http.HttpSite.addHttpApplication(HttpSite.java:1833)
at oracle.oc4j.admin.internal.WebApplicationBinder.bindWebApp(WebApplicationBinder.java:304)
at oracle.oc4j.admin.internal.WebApplicationBinder.bindWebApp(WebApplicationBinder.java:120)
at oracle.oc4j.admin.internal.WebApplicationBinder.bindWebApp(WebApplicationBinder.java:92)
at oracle.oc4j.admin.internal.ApplicationDeployer.bindWebApp(ApplicationDeployer.java:825)
at oracle.oc4j.admin.internal.ApplicationDeployer.doDeploy(ApplicationDeployer.java:276)
at oracle.oc4j.admin.internal.DeployerBase.execute(DeployerBase.java:100)
at oracle.oc4j.admin.jmx.server.mbeans.deploy.OC4JDeployerRunnable.doRun(OC4JDeployerRunnable.java:52)
at oracle.oc4j.admin.jmx.server.mbeans.deploy.DeployerRunnable.run(DeployerRunnable.java:81)
at com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:298)
at java.lang.Thread.run(Thread.java:595)
02-14@08:26:01 INFO (ContextLoader.java:188) - Root WebApplicationContext: initialization started
02-14@08:26:02 INFO (AbstractApplicationContext.java:412) - Refreshing [email protected]125560f: display name [Root WebApplicationContext]; startup date [Tue Feb 14 08:26:02 GST 2012]; root of context hierarchy
02-14@08:26:02 INFO (XmlBeanDefinitionReader.java:309) - Loading XML bean definitions from class path resource [../config/services-applicationContext.xml]

Hi there,
Check for jars you are importing with JVM. The version of jre and its compatibility with imported jars.
Hope it helps !
Reg,
MS

Does anyone know of a VI or how to go about writing one that will prevent the computers time/date from being disabled while an application is running.

Does anyone know of a VI or how to go about writing one that will prevent the computers clock/time from being disabled while an application is running. The time and date can normally be reset while an application is running by clicking on the time/date in the lower right-hand corner of the computer screen. I have an application that runs over several days and it is critical that the time and date of the computer not be changed. Is there an easy way to lock this out from the user? Note that I am what I consider an advanced beginner in LV.
Thank you,
Chuck
Solved!
Go to Solution.

That is not something you can do from LabVIEW, as it is an operating system operation, and it will depend on the operating system that you're using. On Windows you can use a group policy to control this. Please Google on "prevent time and date change in windows".
Also, please try to refrain from stuffing your entire message in the subject block. Keep the subject short, but descriptive enough so it can be understood what you are basically asking. Thanks.

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