JNDI lookup() for a Resource Adapter fails

Hi guys,
I've deployed a Resource Adapter on Weblogic (v10.3.4). It's JNDI name is: jca/HelloAdapter
Moreover, in the Outbound Connection Pools tag, I've created a javax.resource.cci.ConnectionFactory entry with JNDI name: eis/HelloAdapter.
I want to write a simple Java test to lookup my Resource adapter. The code I am using is the following:
      Hashtable<String, String> properties = new Hashtable<String, String>();
      properties.put(Context.INITIAL_CONTEXT_FACTORY, "weblogic.jndi.WLInitialContextFactory");
      properties.put(Context.PROVIDER_URL, "t3://localhost:8001");
      properties.put(Context.SECURITY_PRINCIPAL, "weblogic");
      properties.put(Context.SECURITY_CREDENTIALS, "weblogic1");
      Context ctx = null;
      try {
          ctx = new InitialContext(properties);
          javax.resource.cci.ConnectionFactory cf =
            (javax.resource.cci.ConnectionFactory) ctx.lookup("jca/HelloAdapter");
      } catch (NamingException e) {
          e.printStackTrace();
      }I get the following exception:
javax.naming.NameNotFoundException: No Object found:  jca/HelloAdapter|null
     at weblogic.connector.deploy.JNDIHandler.lookupObject(JNDIHandler.java:881)
     at weblogic.connector.deploy.JNDIHandler.getObjectInstance(JNDIHandler.java:843)
     at javax.naming.spi.NamingManager.getObjectInstance(NamingManager.java:304)
     at weblogic.jndi.internal.WLContextImpl.lookup(WLContextImpl.java:424)
     at weblogic.jndi.internal.WLContextImpl.lookup(WLContextImpl.java:411)
     at javax.naming.InitialContext.lookup(InitialContext.java:392)Any ideas please ? Thank you for your time
Regards,
George

Sorry guys,
I suppose my thread subject is out of the scope of the specific list.
Sorry for the inconvenience

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              In the webtier, I list all the servers in the cluster as a part of url as
              mentioned by you.
              I started the web tier as well as Object tier cluster. I could see the
              request coming in both the machines in the cluster for the ejb. But When I
              bring one the server in the cluster,
              1. Web tier throws an exception saying that it could not connect
              to server using t3.
              2. The other machine which is running the server, also says
              'failed to create socket to : -32323234324 sever name
              using protocol t3.
              It looks like I am able to get load balance. But I am not able to get the
              fail over to be working.
              In the weblogic-ejb-jar.xml, I added the following.
              <clustering-descriptor>
              <home-is-clusterable>true</home-is-clusterable>
              <home-load-algorithm>round-robin</home-load-algorithm>
              </clustering-descriptor>
              I compiled and added the .jar file. So the jar file now has replica aware
              stubs.
              Could any one of you help me for why the fail over is not working?
              Suersh
              "Giri Alwar" <[email protected]> wrote in message
              news:[email protected]...
              > Farid,
              > (1) Yes, the stub has the logic to perform load-balancing and
              fail-over.
              > (2) In almost all cases, no. You can get the context once, store it
              and
              > use it thereafter. Please refer to
              > http://www.weblogic.com/docs51/cluster/concepts.html#1025061 for more
              info.
              >
              > A couple of notes on your situation. From what you are describing, your
              > Windows DNS server is setup to serve only one IP from the cluster (using
              > round-robin) as opposed to a list of all IP's in the cluster. Hence, the
              > initial context you obtain is tied to a single server in the cluster (the
              > one returned by the DNS). The weblogic implementation on the client side
              has
              > no idea of the existence of the other servers in the cluster. This is not
              a
              > cluster aware context. To obtain a cluster aware context, either list all
              > the IP's in the URL like t3://server1,server2,server3:7001 or have
              > "mycluster" return a list of all servers in the cluster.
              >
              > Giri
              >
              >
              > "Farid Bellameche" <[email protected]> wrote in message
              > news:[email protected]...
              > > The documentation says :
              > >
              > > to obtain a Context for JNDI lookup do the following :
              > > Hashtable ht = new Hashtable();
              > > ht.put(Context.INITIAL_CONTEXT_FACTORY,
              > > "weblogic.jndi.WLInitialContextFactory");
              > > ht.put(Context.PROVIDER_URL, "t3://mycluster:7001");
              > > try {
              > > Context ctx = new InitialContext(ht);
              > > // Do the client's work
              > > }
              > > catch (NamingException ne) {
              > > // A failure occurred
              > > }
              > > finally {
              > > try {ctx.close();}
              > > catch (Exception e) {
              > > // a failure occurred
              > > }
              > > }
              > >
              > > where "mycluster" is the DNS name of my cluster. My DNS server (Windows
              > 200
              > > DNS server) use round robin
              > > to call alernatively all the wls server node in "mycluster" and it's OK.
              > The
              > > two servers of my cluster
              > > are called alternatively for my EJB session stateless.
              > > Now I unplug one of the two nodes of my cluster and the remaining server
              > is
              > > called only 2 times
              > > and not after.
              > >
              > > Questions :
              > > -is the load balancing between the nodes of mycluster only rely on DNS
              > or
              > > is there an internal
              > > mecanism in EJB sub to try one server then an other ?
              > >
              > > - do I need to obtain a new reference on JNDI Context for each call ?
              > >
              > >
              > > Thank's a lot.
              > >
              > > Farid Bellameche.
              > >
              > >
              > >
              > >
              >
              >
              

  • JNDI Lookup for EJB3 (Bean to Bean)

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    Hi Zsom,
    Zsom wrote:
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    Zsom wrote:
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    Zsom wrote:
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  • Problems with JNDI lookup for java:comp/env/ejb

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    Hi Debu,
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  • JNDI Lookup for JMS Topic issue.......!

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    Ok, but the communication seems to be OK over the wire because if I use netstat -a I can see the ESTABLISHED connection with the server in the right RMI port.
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    HI Arie,
    If you are accessing enterprise beans with J2EE clients (servlets, JSP, other enterprise beans, J2EE application clients), do not specify and use this arbitrary JNDI name. Instead, define EJB references in the clientsu2019 deployment descriptors and access the beans using these references. For more information, check the following link
    http://help.sap.com/saphelp_nw04/helpdata/en/a0/019b3e25f95f14e10000000a114084/content.htm
    if the above does not work try the following:--
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    or try to lookup the ejb by its default jndi name.
    "localejbs/bean name>"
    http://help.sap.com/saphelp_nw04/helpdata/en/38/3e5a4201301453e10000000a155106/frameset.htm
    in the Above link refer the second option "Lookup from a Non-J2EE Java Application"
    Siddharth
    Edited by: Siddharth Jain on Aug 22, 2008 7:13 AM

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