How to install Stateful Session Bean installed in a OAS9i

Hi Techies:
I am a newbie to work in Oracle Application Server 9i.I have developed a simple bean in Oracle JDeveloper 9i.
I have also developed the EAR file and wgile deploying the EAR file in the OAS 9i.
I am getting the following error while deploying.
----------------------Text from LOg file--------------------
Beginning deployment to Oracle9i Application Server...
Wrote EAR file to D:\Ritesh-Data\XML_SAMPLES\ProjWork\CARTExEar.ear
C:\OraHome1\jdev\JDK1.3\JRE\bin\javaw.exe -jar C:\OraHome1\jdev\lib\admin.jar ormi://h11/ user **** -deploy -file D:\Ritesh-Data\XML_SAMPLES\ProjWork\CARTExEar.ear -deploymentName CARTExEar
Invoking Oracle9iAS admin tool...
Error: javax.naming.NamingException: Lookup error: java.net.ConnectException: Connection refused: connect; nested exception is:
java.net.ConnectException: Connection refused: connect
---- Deployment finished. ----
---------------------------------End of log file----------------
I would request you all to help me rectify this error.
Looking to hear from you.
Bye
Regards
Ritesh

Ritesh,
Looks like you are trying to deploy to a remote host called h11 and the host cannot be reached from this workstation. Can you please try to ping h11 from this and whether you get a reply ?
Another possibility may the Oc4J server is not up when you are trying to deploy this apps.
regards
Debu

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Look at this site. The tutorial explains it all.
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Hi,
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Hi all,
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if(msg.equals("aaaa"))
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Hi,
thanks for information. But i have one question. In a stateful session bean why do we have to store the Remote Interface on the client side.
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thanks in advance
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Accessing the same stateful session bean from multiple clients in a clustered environment

I am trying to access the same stateful session bean from multiple
          clients. I also want this bean to have failover support so we want to
          deploy it in a cluster. The following description is how we have tried
          to solve this problem, but it does not seem to be working. Any
          insight would be greatly appreciated!
          I have set up a cluster of three servers. I deployed a stateful
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          If 'allow-concurrent-call' does exactly what you need, then you don't have a problem,
          do you?
          Except of course if you switch ejb containers. Oh well.
          Mike
          "FBenvadi" <[email protected]> wrote:
          >I've got the same problem.
          >I understand from you that concurrent access to a stateful session bean
          >is
          >not allowed but there is a
          >token is weblogic-ejb-jar.xml that is called 'allow-concurrent-call'
          >that
          >does exactly what I need.
          >What you mean 'you'll get a surprise when you go to production' ?
          >I need to understand becouse I can still change the design.
          >Thanks Francesco
          >[email protected]
          >
          >"Mike Reiche" <[email protected]> wrote in message
          >news:[email protected]...
          >>
          >> Get the fix immediately from BEA and test it. It would be a shame to
          >wait
          >until
          >> December only to get a fix - that doesn't work.
          >>
          >> As for stateful session bean use - just remember that concurrent access
          >to
          >a stateful
          >> session bean is not allowed. Things will work fine until you go to
          >production
          >> and encounter some real load - then you will get a surprise.
          >>
          >> Mike
          >>
          >> [email protected] (Justin Meyer) wrote:
          >> >I just heard back from WebLogic Tech Support and they have confirmed
          >> >that this is a bug. Here is their reply:
          >> >
          >> >There is some problem in failover of stateful session beans when its
          >> >run from a java client.However, it is fixed now.
          >> >
          >> >The fix will be in SP2 which will be out by december.
          >> >
          >> >
          >> >Mike,
          >> >Thanks for your reply. I do infact believe we are correctly using
          >a
          >> >stateful session bean however it may have been misleading from my
          >> >description of the problem. We are not accessing the bean
          >> >concurrently from 2 different clients. The second client will only
          >> >come into play if the first client fails. In this case we want to
          >be
          >> >able to reacquire the handle to our stateful session bean and call
          >it
          >> >from the secondary client.
          >> >
          >> >
          >> >Justin
          >> >
          >> >"Mike Reiche" <[email protected]> wrote in message
          >news:<[email protected]>...
          >> >> You should be using an entity bean, not a stateful session bean
          >for
          >> >this application.
          >> >>
          >> >> A stateful session bean is intended to be keep state (stateful)
          >for
          >> >the duration
          >> >> of a client's session (session).
          >> >>
          >> >> It is not meant to be shared by different clients - in fact, if
          >you
          >> >attempt to
          >> >> access the same stateful session bean concurrently - it will throw
          >> >an exception.
          >> >>
          >> >> We did your little trick (storing/retrieving handle) with a stateful
          >> >session bean
          >> >> on WLS 5.1 - and it did work properly - not as you describe. Our
          >sfsb's
          >> >were not
          >> >> replicated as yours are.
          >> >>
          >> >> Mike
          >> >>
          >> >> [email protected] (Justin Meyer) wrote:
          >> >> >I am trying to access the same stateful session bean from multiple
          >> >> >clients. I also want this bean to have failover support so we want
          >> >to
          >> >> >deploy it in a cluster. The following description is how we have
          >tried
          >> >> >to solve this problem, but it does not seem to be working. Any
          >> >> >insight would be greatly appreciated!
          >> >> >
          >> >> >I have set up a cluster of three servers. I deployed a stateful
          >> >> >session bean with in memory replication across the cluster. A client
          >> >> >obtains a reference to an instance of one of these beans to handle
          >> >a
          >> >> >request. Subsequent requests will have to use the same bean and
          >could
          >> >> >come from various clients. So after using the bean the first client
          >> >> >stores the handle to the bean (actually the replica aware stub)
          >to
          >> >be
          >> >> >used by other clients to be able to obtain the bean. When another
          >> >> >client retrieves the handle gets the replica aware stub and makes
          >> >a
          >> >> >call to the bean the request seems to unpredictably go to any of
          >the
          >> >> >three servers rather than the primary server hosting that bean.
          >If
          >> >the
          >> >> >call goes to the primary server everything seems to work fine the
          >> >> >session data is available and it gets backed up on the secondary
          >> >> >server. If it happens to go to the secondary server a bean that
          >has
          >> >> >the correct session data services the request but gives the error
          >> >> ><Failed to update the secondary copy of a stateful session bean
          >from
          >> >> >home:ejb20-statefulSession-TraderHome>. Then any subsequent requests
          >> >> >to the primary server will not reflect changes made on the secondary
          >> >> >and vice versa. If the request happens to go to the third server
          >that
          >> >> >is not hosting an instance of that bean then the client receives
          >an
          >> >> >error that the bean was not available. From my understanding I
          >thought
          >> >> >the replica aware stub would know which server is the primary host
          >> >for
          >> >> >that bean and send the request there.
          >> >> >
          >> >> >Thanks in advance,
          >> >> >Justin
          >>
          >
          >

Error in updating secondary stateful session bean

          Hi all,
          I have set up a cluster of 2 managed servers with WebLogic 6.1. I have a
          stateful session bean and several stateless session beans. the stateful
          session bean keeps user info and limited cached objects, all are
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          servers, as long as one is alive. a java application client creates a
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          remote interface of the stateful bean as a method parameter. No problem
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          bean.
          Thank you,
          Fujin


This has been fixed in WLS 6.1 SP2.
          jagdip Talla wrote:
          > Hi Fujin,
          > please let me know, if u were able to solve the problem..
          >
          > hi guys,
          > appreciate if you could give me some clues
          > how to solve this problem ?
          >
          > i hv 2 WLS instances in a cluster,
          > when one server instance is shut down, i keep getting these errors ?
          > is it normal ?
          > <Feb 19, 2002 2:57:53 PM SGT> <Error> <EJB> <Failed to update the secondary copy of a stateful session bean from home:ejb/xyzrel1_2/xxxxHome>
          >
          > appreciate if u can let me know, if u could solve it..?
          >
          > thanks n regads
          > jagdip
          Rajesh Mirchandani
          Developer Relations Engineer
          BEA Support

EJB 3.0 Stateful session bean shared between Servlet's

Hello
I have a bit of a noob question regarding Stateful sessions beans.
I am wanting to know if there is a way that I can share an instance of a session bean between multiple HttpServlet instances?
I am sending XML messages from a mobile J2ME application, there will be several http POST's made from the mobile client to the server. I would like these multiple POST's to be passed from the handling servlet instance to the same uniquely identified single stateful session bean instance (i can then @Remove the stateful bean when I have finished my several requests).
I would greatly appreciate any tips anyone could give me.

If not, your only option is to maintain the
association yourself by creating a unique id for
each
conversation and storing that id along with the SFSB
reference in the ServletContext. Then you'll
need to pass the id in along with each invocation to
retrieve the appropriate SFSB reference.Thanks for your reply.
Will I always be presented with the same ServletContext instance? Even if the time between requests might be many minutes? Where can I learn more about how to use the ServletContext?
Thanks!

Stateful Session Bean Initialization (EJB 3.0)

Hi all!
In EJB 2.1 the initialization was with create (args) methods. NOw, how is it exploited? Create methods are no more there and there must be a way to send parameters to the stateful session bean when it is newly created...isn't it?
Thank you!

There is no pre-defined equivalent of a create method in EJB 3.0. If you want to initialize a
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Context.lookup in a Servlet always returns the same Stateful Session Bean

Hi,
I am working on an application in which a Servlet should obtain one StateFul Session Bean per client. I read in EJB 3.0 in Action that to do so I should use a jndi lookup and save the result of the lookup in an HttpSession. This works fine for me when I have a single client.
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The code I use to obtain and save the SFSB is the following:
HttpSession session = request.getSession(true);
DFMServiceRemote service = (DFMServiceRemote) session.getAttribute("DFMService");
if (null == service)
service = (DFMServiceRemote) new InitialContext().lookup("DFMService");
session.setAttribute("DFMService", service);
}Using different browser, I end up with different HttpSession but a single SFSB. The only workaround I found is to create the context with environment variables or properties. It then returns different SFSBs for different HttpSession. The workaround code is as below:
Hashtable<String, String> env = new Hashtable<String, String>();
env.put(Context.INITIAL_CONTEXT_FACTORY, "com.evermind.server.rmi.RMIInitialContextFactory");
env.put(Context.SECURITY_PRINCIPAL, "oc4jadmin");
env.put(Context.SECURITY_CREDENTIALS, "welcome");
env.put(Context.PROVIDER_URL, "ormi://localhost:23791/DriverFatigue");
service = (DFMServiceRemote) new InitialContext(env).lookup("DFMService");My question is the following. How can I get a different instance of an SFSB every time I execute context.lookup without specifying properties.
Thanks in advance for any help,
Matthieu Siggen

I just did something similar in another project using JBoss instead of oc4j and didn't have any problem. I expect I missed a configuration file in oc4j or there is a conflict somewhere.

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Hi,
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In the Webdynpro DC I added com.sap.archive-packaging.default.update-descriptors=true in the build.properties file of the cfg directory. (using the navigator view) That resolved an error while building it.
Deployed the Enterprise Application DC without problems.
Tried to deploy the Webdynpro DC but I get the following error:
Jun 16, 2008 9:40:46 AM /userOut/deploy (com.sap.ide.eclipse.sdm.threading.DeployThreadManager) [Thread[Deploy Thread,5,main]] WARNING:
[012]Deployment finished with warning
Settings
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URL to deploy : file:/C:/DOCUME~1/JESCHA~1/LOCALS~1/Temp/temp59822company.nl~projempactcmp.ear
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Deployment exception : Got problems during deployment
Does anyone know what this error means and how to resolve it. I searched the forum but only found errors that look like this relating to XI not to Webdynpro.......
Thansk,
Jeschael
Edited by: J.V. Lebbink on Jun 17, 2008 6:52 AM

Default is 30mts.
This is done as a parameter in orion-ejb-jar.xml. Please look at the EJB Guide at http://otn.oracle.com/docs/products/ias/doc_library/903doc_otn/generic.903/a97677/dtdxml.htm#634197 for details
regards
Debu

Reentrant call to a stateful session bean

Hi,
I have a problem that seems to be a very common problem but I
steel didn't find any solution for it.
We have a jsp page that call to stateful session been, the
problem occur when I click twice on any link/button then I get
java.rmi.RemoteException: Illegal attempt to make a reentrant call to a stateful
session bean from home:....
I have tried to set the <allow-concurrent-calls> to true but it doesn't help,
I am getting this exception no matter the value of this tag.
I am using WL61 sp2 (the last version) , Does anybody find a solution for that,
I don't want to use javascript in order to work around this problem.
Thanks,

I think this is a different error from concurrent access (when client's
attempt to access the same bean concurrently WebLogic throws LockTimedOut error
(or client blocks if allow-concurrent-calls is true)).
This error probably means that your code attempetd to reenter bean in the same
transaction - how do you invoke it and what is the stack trace?
Haim Cohen <[email protected]> wrote:
Hi,
I have a problem that seems to be a very common problem but I
steel didn't find any solution for it.
We have a jsp page that call to stateful session been, the
problem occur when I click twice on any link/button then I get
java.rmi.RemoteException: Illegal attempt to make a reentrant call to a stateful
session bean from home:....
I have tried to set the <allow-concurrent-calls> to true but it doesn't help,
I am getting this exception no matter the value of this tag.
I am using WL61 sp2 (the last version) , Does anybody find a solution for that,
I don't want to use javascript in order to work around this problem.
Thanks, --
Dimitri

Lock Timed out exception in stateful Session Bean

Hi All,
We have a stateful session bean and put the reference of the bean in HttpSession
and retrieve it from other JSP.
While calling a method from bean, we are often getting the following exception.
Any help please?
weblogic.ejb.extensions.LockTimedOutException: Lock for primaryKey:1018581328443_46
could not be acquired without waiting.
at weblogic.ejb.internal.LockManagerImpl.lock(LockManagerImpl.java:134)
at weblogic.ejb.internal.LockManagerImpl.lock(LockManagerImpl.java:81)
at weblogic.ejb.internal.StatefulEJBCache.bind(StatefulEJBCache.java:447)
at weblogic.ejb.internal.StatefulEJBObject.getContextForInvoke(StatefulEJBObject.java:159)
at weblogic.ejb.internal.BaseEJBObject.preInvoke(BaseEJBObject.java:487)
at com.elink.jbe.savejobses.SaveJobSesBeanEOImpl.getJobHeaderData(SaveJobSesBeanEOImpl.java:1258)
at jsp_servlet._jobentry._jbeenquirydefaults._jspService(_jbeenquirydefaults.java:243)
at weblogic.servlet.jsp.JspBase.service(JspBase.java:27)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:123)
at weblogic.servlet.internal.ServletContextImpl.invokeServlet(ServletContextImpl.java:761)
at weblogic.servlet.internal.ServletContextImpl.invokeServlet(ServletContextImpl.java:708)
at weblogic.servlet.internal.ServletContextManager.invokeServlet(ServletContextManager.java:252)
at weblogic.socket.MuxableSocketHTTP.invokeServlet(MuxableSocketHTTP.java:346)
at weblogic.socket.MuxableSocketHTTP.execute(MuxableSocketHTTP.java:246)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:135)

Hi Arjuna,
Thanks for your suggestions. But can you also help me how to make the session
bean thread safe?
Thanks in Advance
Srinath
"Arjuna Chala" <[email protected]> wrote:
Looks like you have two threads accessing the bean at the same time.
You
need to make it thread safe. Also, store the handle of the session bean
instead of the session bean itself in the session.
By the way, session beans (handle or otherwise) are not meant to be stored
in the HttpSession, and here is why:
http://groups.google.com/groups?q=stateful+session+bean+httpsession&hl=en&se
lm=3b72acb9%40newsgroups.bea.com&rnum=6
"srinath" <[email protected]> wrote in message
news:[email protected]...
Hi All,
We have a stateful session bean and put the reference of the bean inHttpSession
and retrieve it from other JSP.
While calling a method from bean, we are often getting the followingexception.
Any help please?
weblogic.ejb.extensions.LockTimedOutException: Lock forprimaryKey:1018581328443_46
could not be acquired without waiting.
atweblogic.ejb.internal.LockManagerImpl.lock(LockManagerImpl.java:134)
atweblogic.ejb.internal.LockManagerImpl.lock(LockManagerImpl.java:81)
atweblogic.ejb.internal.StatefulEJBCache.bind(StatefulEJBCache.java:447)
atweblogic.ejb.internal.StatefulEJBObject.getContextForInvoke(StatefulEJBObjec
t.java:159)
atweblogic.ejb.internal.BaseEJBObject.preInvoke(BaseEJBObject.java:487)
atcom.elink.jbe.savejobses.SaveJobSesBeanEOImpl.getJobHeaderData(SaveJobSesBea
nEOImpl.java:1258)
atjsp_servlet._jobentry._jbeenquirydefaults._jspService(_jbeenquirydefaults.ja
va:243)
at weblogic.servlet.jsp.JspBase.service(JspBase.java:27)
atweblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java
:123)
atweblogic.servlet.internal.ServletContextImpl.invokeServlet(ServletContextImp
l.java:761)
atweblogic.servlet.internal.ServletContextImpl.invokeServlet(ServletContextImp
l.java:708)
atweblogic.servlet.internal.ServletContextManager.invokeServlet(ServletContext
Manager.java:252)
atweblogic.socket.MuxableSocketHTTP.invokeServlet(MuxableSocketHTTP.java:346)
atweblogic.socket.MuxableSocketHTTP.execute(MuxableSocketHTTP.java:246)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:135)

How to install Stateful Session Bean installed in a OAS9i

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