Lookup Failure EJB JNDI - StatelessSession Bean Example on Unix

Hi,
I am trying to run weblogic 5.1 on Unix. Earlier on, I tried
running the ejb example: "StatelessSession" on Windows NT and succeeded.
However I am unable to do so on unix.
Error message says that the problem is in URL or JNDI name.
I started the Weblogic Server on Unix and then started the Console
on my own Desktop i.e. Windows 2000. Then I was able to connect
to myserver which was running on Unix and could see the EJB deployed
all ok.
Now for running this example as and when I try to run the
java client code (which is a java application / class) I am unable
to do a lookup for the context.
I have verified that the DNS name for the Unix box as well as
port # is correct. Same is true for the JNDI name. My problem appears
to be of class path.
I looked up the log file and found out the problem:
Tue Mar 13 16:41:40 CST 2001:<E> <ServletContext-General> Cannot
find resource 'classes/examples/ejb/basic/statelessSession/TraderBe
anHomeImpl_ServiceStub.class' in document root '/app/weblogic/planit/weblogic/myserver/public_html'
So that means if I place the client files in this directory (i.e.
public_html) it would run. But I am wondering where do I need to
specify that the server should look in "ClientClasses" directory
and not in "public_html" directory.
What else could be wrong......
Sincerely,
Ahmad

Ahmad,
This file gets generated when you run java weblogic.ejbc. This is the last
step in creating the EJB. From the class files, weblogic needs to create the skelton
and the stub so that they are able to communicate back and forth...
Peter
"Ahmad" <[email protected]> wrote:
>
Hi All,
I took a fresh look at the Error as displayed in the log
file on the Unix machine:
It says it Cannot find resource 'classes/examples/ejb/basic/statelessSession/TraderBeanHomeImpl_WLStub.class'
in document root '/app/weblogic/planit/weblogic/myserver/public_html'
Now I looked under public_html directory and did not find the "classes"
directory. What I did was :
1. Created a new "classes" directory under public_html.
2. copy the whole directory structure from "clienclasses" directory
and placed it under the newly created directory.
However to my surprise, could not find TraderBeanHomeImpl_WLStub.class
When I tried to look for the same file on NT machine, (where this
example is running all o.k) I still
could not find it. When is this class generated and what is happening.
"Ahmad" <[email protected]> wrote:
Hello There!!
My class path on unix is set as follows:
planit@itd00n15> . ./setEnv.sh
============= Setting Environment ================
WL_HOME=/app/weblogic/planit/weblogic
JAVA_HOME=/usr/java/jdk122a
CLIENT_CLASSES=/app/weblogic/planit/weblogic/myserver/clientclasses
SERVER_CLASSES=/app/weblogic/planit/weblogic/myserver/serverclasses
SERVLET_CLASSES=/app/weblogic/planit/weblogic/myserver/servletclasses
PATH=/usr/java/jdk122a/bin:/usr/java/jdk122a/bin:/app/weblogic/planit/weblogic/bin:/usr/java/jdk122a/bin:/oracle/product/8.1.6/bin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/ccs/bin:/usr/openwin/bin
CLASSPATH=/usr/java/jdk122a/lib/tools.jar:/app/weblogic/planit/weblogic/license:/app/weblogic/planit/weblogic/classes:/app/weblogic/planit/weblogic/lib/weblogicaux.jar:/app/weblogic/planit/weblogic/eval/cloudscape/lib/cloudscape.jar:/app/weblogic/planit/weblogic/myserver/clientclasses:/app/weblogic/planit/weblogic/myserver/serverclasses
LD_LIBRARY_PATH=/oracle/product/8.1.6/lib:/app/weblogic/planit/weblogic/lib/solaris:/app/weblogic/planit/weblogic/lib/solaris:/app/weblogic/planit/weblogic/lib/solaris
I have no idea what is going on!!
Ahmad
"Ahmad" <[email protected]> wrote:
By the way, we are using service pack 4. Would that matter
on Unix
for this kind of exception...
I am not sure, where would I define the class path to
the client
stub classes. I mean in which file!!
Sincerely,
Ahmad
"Ahmad" <[email protected]> wrote:
What directory Structure should I be in in order to
run
the
client. On NT I have to be in "ClientClasses" directory.
For
example following example runs fine on Windows NT:
C:\weblogic\myserver\clientclasses>java examples.ejb.basic.statelessSession.Client
Beginning statelessSession.Client...
Creating a trader
Buying 100 shares of BEAS.
Buying 200 shares of MSFT.
Buying 300 shares of AMZN.
Buying 400 shares of HWP.
Selling 100 shares of BEAS.
Selling 200 shares of MSFT.
Selling 300 shares of AMZN.
Selling 400 shares of HWP.
Removing the trader
End statelessSession.Client...
However for unix, I tried different directories, I am
not sure
which one in the hierarchy am I supposed to be, in order
to
run the client.
By the way, I tried putting the ctx.lookup method ina
catch block
and tried to print the stack trace.
Here is the error which I am getting, irrespective of
the directory
hierarchy I am in:
planit@itd00n15> java examples.ejb.basic.statelessSession.Client
Beginning statelessSession.Client...
About to Lookup the JNDI name !!
The client was unable to lookup the EJBHome. Pleasemake
sure
that you have deployed the ejb with the JNDI name statelessSession.TraderHome
on the WebLogic server at t3://planit-dev.intranet.sprintspectrum.com:10400
Printing the Stack Trace :
javax.naming.CommunicationException. Root exceptionis
java.lang.ClassNotFoundException:
class examples.ejb.basic.statelessSession.TraderBeanHomeImpl_ServiceStub
previously not found
at java.lang.Throwable.fillInStackTrace(Native
Method)
at java.lang.Throwable.fillInStackTrace(Compiled
Code)
at java.lang.Throwable.<init>(Compiled Code)
at java.lang.Exception.<init>(Compiled Code)
at java.lang.ClassNotFoundException.<init>(Compiled
Code)
at weblogic.rjvm.MsgAbbrev.read(Compiled Code)
at weblogic.socket.JVMAbbrevSocket.readMsgAbbrevs(JVMAbbrevSocket.java:505)
at weblogic.rjvm.MsgAbbrevInputStream.prime(MsgAbbrevInputStream.java:134)
at weblogic.rjvm.RJVMImpl.dispatch(RJVMImpl.java:610)
at weblogic.rjvm.ConnectionManagerClient.handleRJVM(ConnectionManagerClient.java:34)
at weblogic.rjvm.ConnectionManager.dispatch(ConnectionManager.java:630)
at weblogic.socket.JVMAbbrevSocket.dispatch(Compiled
Code)
at weblogic.socket.JVMSocketT3.dispatch(Compiled
Code)
at weblogic.socket.JavaSocketMuxer.processSockets(Compiled
Code)
at weblogic.socket.SocketReaderRequest.execute(SocketReaderRequest.java:23)
at weblogic.kernel.ExecuteThread.run(Compiled
Code)
--------------- nested within: ------------------
weblogic.rmi.UnmarshalException: Unmarshalling return
- with nested exception:
[java.lang.ClassNotFoundException: class examples.ejb.basic.statelessSession.TraderBeanHomeImpl_ServiceStub
previously not found]
at java.lang.Throwable.fillInStackTrace(Native
Method)
at java.lang.Throwable.fillInStackTrace(Compiled
Code)
at java.lang.Throwable.<init>(Compiled Code)
at java.lang.Exception.<init>(Compiled Code)
at java.io.IOException.<init>(IOException.java:47)
at weblogic.common.T3Exception.<init>(T3Exception.java:47)
at weblogic.rmi.RemoteException.<init>(RemoteException.java:41)
at weblogic.rmi.UnmarshalException.<init>(UnmarshalException.java:31)
at weblogic.jndi.toolkit.BasicWLContext_WLStub.lookup(BasicWLContext_WLStub.java:256)
at weblogic.jndi.toolkit.WLContextStub.lookup(Compiled
Code)
at javax.naming.InitialContext.lookup(InitialContext.java:349)
at examples.ejb.basic.statelessSession.Client.lookupHome(Client.java:154)
at examples.ejb.basic.statelessSession.Client.<init>(Client.java:44)
at examples.ejb.basic.statelessSession.Client.main(Client.java:86)
Throwing ne !!
NamingException Occured!!. Exception Message:
null
Sincerely,
Ahmad
"Ahmad" <[email protected]> wrote:
Hi all,
I am still unable to find out where do I have to
tell
weblogic tha the stubs for the client classes are in
ClientClasses directory.
Any ideas are welcome.
Sincerely,
Ahmad
"Ahmad" <[email protected]> wrote:
Hi,
I am trying to run weblogic 5.1 on Unix. Earlieron,
I tried
running the ejb example: "StatelessSession" on Windows
NT and succeeded.
However I am unable to do so on unix.
Error message says that the problem is in URL or
JNDI
name.
I started the Weblogic Server on Unix and then started
the Console
on my own Desktop i.e. Windows 2000. Then I was ableto
connect
to myserver which was running on Unix and could see
the
EJB deployed
all ok.
Now for running this example as and when I
try
to run the java client code (which is a java application/
class) I am unable to do a lookup for the context.
I have verified that the DNS name for the Unix boxas
well as port # is correct. Same is true for the JNDIname.
My
problem appears to be of class path.
I looked up the log file and found out the problem:
Tue Mar 13 16:41:40 CST 2001:<E> <ServletContext-General>
Cannot find 'classes/examples/ejb/basic/statelessSession/TraderBe
anHomeImpl_ServiceStub.class' in document
'/app/weblogic/planit/weblogic/myserver/public_html'
So that means if I place the client files in this
directory
(i.e. public_html) it would run. But I am wonderingwhere
do
I need to specify that the server should look in
"ClientClasses" directory and not in "public_html"
directory.
What else could be wrong......
Sincerely,
Ahmad

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thanks inadvance,
nkmb

http://support.bea.com/application?namespace=askbea&origin=ask_bea_answer.jsp&event=link.view_answer_page_solution&answerpage=solution&page=wlw/S-28139.htm

EJB 3.0 Bean name

Is there a way that we can override the EJB 3.0 Bean name in the deployment descriptor? I know we can provide the name in the Annotation via @MessageDriven(name="bar").
For example, if I have the following Bean,
package com.example;
@MessageDriven
public class Foo implements MessageListener {
When deployed, it always deploys as Foo, even if I have the following in my ejb-jar.xml and weblogic-ejb-jar.xml:
<mesage-driven>
<ejb-name>Bar</ejb-name>
<ejb-class>com.example.Foo</ejb-class>
<destination-type>javax.jms.Topic</destination-type>
<subscription-durablility>Durable</subscription-durablity>
</message-driven>
<mesage-driven>
<ejb-name>Baz<r</ejb-name>
<ejb-class>com.example.Foo</ejb-class>
<destination-type>javax.jms.Queue</destination-type>
</message-driven>
There seems no way I can re-use the Same bean class with EJB 3.0 if I needed to. If there is anyway, the ejb-name can be used please let me know.
Thanks

Hi,
For a JEE5 EJB module, rather than using EJBGen, you can use WLS specific annotations for configuring common settings. If you follow the link below, you can see a list of supported EJB annotations. Disregard the fact that the documentation section title is WebLogic Kodo Annotations. That is incorrect and I've filed a bug for it.
http://edocs.bea.com/wls/docs103/ejb30/annotations.html#wp1438036.
Unfortunately, we don't yet support setting all weblogic-ejb-jar.xml configuration values via annoations so in some cases a weblogic-ejb-jar.xml is still required.
You can hand edit your weblogic-ejb-jar.xml and the example you posted below should work fine.
- Matt

How to lookup an EJB from JSP on a Remote Server in JES2005Q4

Hi,
I am having two different domain (domain1,domain2) respectvely. My ABC.ear j2eee application is deployed on domain2 and its iiop port is 33703.In domain1 i have xyz.war (web application) and it's IIOP port is 3700 .In xyz.war i am having CallEJB.jsp file.In this Jsp file i want to lookup an EJB Service called PaymentEJB(JNDI Name is ejb/PaymentEJB).
The code is below
InitialContext context=new InitialContext();
Object objRef=context.lookup("corbaname:iiop:andaman:33703#ejb/PaymentEJB");
I am getting the following error.
[#|2005-12-14T16:42:03.422+0530|SEVERE|sun-appserver-pe8.1_02|javax.enterprise.resource.corba._DEFAULT_.rpc.transport|_ThreadID=11;|"IOP00410216: (COMM_FAILURE) Unable to create IIOP listener on the specified host/port: all interfaces/3700"
org.omg.CORBA.COMM_FAILURE: vmcid: SUN minor code: 216 completed: No
at com.sun.corba.ee.impl.logging.ORBUtilSystemException.createListenerFailed(ORBUtilSystemException.java:2661)
My doubt is
1.While starting domain1 and domain2 iiop listeners are started on the port 3700 and 33703.in that case why EJB lookup tries to create listener on one more time.
2.I am looking the 33703 port only.but it tries to create port on 3700 why?
3.It was working till JES2005Q1.Is there any patch i need to install? or i need to change anything in my code.
I am frustrated with this error for past one week.I will be happy if some body will give me the peace of mind(thru some solution).

Hi,
I am having two different domain (domain1,domain2) respectvely. My ABC.ear j2eee application is deployed on domain2 and its iiop port is 33703.In domain1 i have xyz.war (web application) and it's IIOP port is 3700 .In xyz.war i am having CallEJB.jsp file.In this Jsp file i want to lookup an EJB Service called PaymentEJB(JNDI Name is ejb/PaymentEJB).
The code is below
InitialContext context=new InitialContext();
Object objRef=context.lookup("corbaname:iiop:andaman:33703#ejb/PaymentEJB");
I am getting the following error.
[#|2005-12-14T16:42:03.422+0530|SEVERE|sun-appserver-pe8.1_02|javax.enterprise.resource.corba._DEFAULT_.rpc.transport|_ThreadID=11;|"IOP00410216: (COMM_FAILURE) Unable to create IIOP listener on the specified host/port: all interfaces/3700"
org.omg.CORBA.COMM_FAILURE: vmcid: SUN minor code: 216 completed: No
at com.sun.corba.ee.impl.logging.ORBUtilSystemException.createListenerFailed(ORBUtilSystemException.java:2661)
My doubt is
1.While starting domain1 and domain2 iiop listeners are started on the port 3700 and 33703.in that case why EJB lookup tries to create listener on one more time.
2.I am looking the 33703 port only.but it tries to create port on 3700 why?
3.It was working till JES2005Q1.Is there any patch i need to install? or i need to change anything in my code.
I am frustrated with this error for past one week.I will be happy if some body will give me the peace of mind(thru some solution).

Problem in running entity bean examples

I am trying to run a entity bean example in my bea ,earlier i was getting the error
that the data source name could not be found ,and so i replaced the data source
name in my .xml file
as cgDataSource and now i am not finding that error ,and the
jsp page is also displayed ,but the data is not inserted into
my database table.
I tried it using my personal domain ,and i edited the weblogic.properties file
also ,but now i am getting the error that the data source name could not be found

Hi,
An error saying a data source can't be found indicates one of two problems:
1. The data source name in your cmp descriptor doesn't match the JNDI name of
the actual data source. To rule this out, verify the names are indeed the same.
2. The data source didn't deploy. Usually this is caused by the underlying connection
pool not deploying. Look in you server log to verify the data source and the
underlying connection pool both deployed properly.
- Matt
"Vipin Nair" <[email protected]> wrote:
>
I am trying to run a entity bean example in my bea ,earlier i was getting
the error
that the data source name could not be found ,and so i replaced the data
source
name in my .xml file
as cgDataSource and now i am not finding that error ,and the
jsp page is also displayed ,but the data is not inserted into
my database table.
I tried it using my personal domain ,and i edited the weblogic.properties
file
also ,but now i am getting the error that the data source name could
not be found

A prefix can be included in the EJB JNDI name dynamically?

In the Stateless annotation, we can specify the mappedName attribute to the EJB JNDI name bind.
Can we specify a prefix to the mappedName separately?
For example: We have this:
@Stateless(mappedName="myEJB")And don't want to do this:
@Stateless(mappedName="prefix/myEJB")We want to include the prefix in another place in the code dynamically.
Can we do that??

jtahlborn wrote:
eudesf wrote:
Hello! Thanks for reply!
As I can't configure programatically, there is any way to configure in an application descriptor, or in another place of the application server?
The idea is to publish two applications that use the same EJB classes, but in different JNDI namespaces, because we don't want to share the resources. Otherwise, it will result in JNDI name conflicts. The applications works in different contexts and we want to reuse the existing EJB definitions.
Any suggestion?yes you can do this. ejb 3.0 keeps the features from 2.1, namely all the xml based configuration (although it is now optional). and, the annotations are always overriden by the xml configuration. thus, you can create different deployments with different the same compiled class files. you just need to override the annotation configuration with xml configuration (via ejb-jar.xml or whatever).Yes, we can do that. I've tested here, and it works. But, can we do better?
The configuration via XML implies maintenance, and it's not good, because we have so many EJBs to maintain.
And there is another problem... The EJB classes are in JARs, and these JARs are shared across the applications.
Pretend that you have to maintain two versions of each EJB JAR. One with XML configured and other without. If we change one, the another must be changed too. How can it be productive?
I have seen some EJB implementations that are more flexible with JNDI naming.
See:
- [http://openejb.apache.org/jndi-names.html|http://openejb.apache.org/jndi-names.html]
- [http://fixunix.com/weblogic/221782-dynamic-jndi-name-weblogic-ejb-jar-xml.html|http://fixunix.com/weblogic/221782-dynamic-jndi-name-weblogic-ejb-jar-xml.html]
Does it have a better solution in Glassfish?

Message driven bean example is not working

Hi,
i tried message driven bean example on J2ee 6.20. I am able to make connection factory, but when i tried to deploy ear file a get an exception:
Error occurred
com.inqmy.services.deploy.container.DeploymentException: java.lang.NullPointerEx
ception
        at com.inqmy.services.ejb20.EJBAdmin.commitDeploy(EJBAdmin.java:604)
        at com.inqmy.services.deploy.server.DeployServiceImpl.commit(DeployServi
ceImpl.java:2897)
        at com.inqmy.services.deploy.server.DeployServiceImpl.deploy1(DeployServ
iceImpl.java:524)
        at com.inqmy.services.deploy.server.DeployServiceImpl.deploy(DeployServi
ceImpl.java:139)
        at com.inqmy.services.deploy.command.DeployCommand.exec(DeployCommand.ja
va:142)
        at com.inqmy.services.shell.processor.environment.CommandBase.exec(Comma
ndBase.java:124)
        at com.inqmy.services.shell.processor.Interpreter.applyLineCommand(Inter
preter.java:391)
        at com.inqmy.services.shell.processor.Interpreter.apply(Interpreter.java
:150)
        at com.inqmy.services.shell.processor.Shell.work(Shell.java:150)
        at com.inqmy.services.shell.processor.managers.ScriptProcessThread.run(S
criptProcessThread.java:128)
in visual administrator I can see the right queue and for few seconds this queue have one consumer.
thank
JJ

Hi,
but this example was in guide to this version.
Ok, in case it is not possible to use MDB, how should i handle long time consumpting functions in EP enviroment?
(customer has only EP6SP2 and he need to send a lot of mails after user request and i dont want to leave user waiting till that function ends. - should i start new thread in portal?)
JJ

Lookup Failure EJB JNDI - StatelessSession Bean Example on Unix

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