Invoking EJB from OSB

I am trying to invoke an EJB from OSB.
For this i found 2 options.
1 .exposing the ejb as webservice and configure the service end point in business service.(exposing the ejb as webservice is simple with annotations)
2.Or in OSB there is a provision to configure the business service with transport type as ejb .(calling the ejb directly)
both of them are simple.But in my requirement the OSB service would be deployed on multiple servers.
Could any of you tell me which is the best way to implement this ,in the performance lines.
Thanks in advance,
Chandra

Personally would prefer using 2 approach.
Advantage of approach 2 is more pronounced if JTA XA transctions are involved in your pipeline which are not possible with WSDL over HTTP approach.
Performance wise, approach 2 should be better.IF the EBJ is deployed in same weblogic as OSB , then we can avoid the http over head of papraoch 1 by using 1.
My two cents
Manoj

Similar Messages

Unable to invoke EJB from a BPEL process.

Hello all
I am running BPEL process manager over weblogic 8.1 App server. I am trying to invoke a simple stateless session bean from a synchronous BPEL process. I have created a WSDL for this EJB with appropriate binding and service elements.
I am able to build my BPEL sync process and deploy it. But, when I run the process and invoke the EJB, I am getting the following exception-
BPEL Fault: {http://schemas.oracle.com/bpel/extension}bindingFaultCould not create instance for home 'ClusterableRemoteRef(-3059145150938040994S:172.26.210.17:[9700,9700,-1,-1,9700,-1,-1,0,0]:myorabpel:orabpelServer [-3059145150938040994S:172.26.210.17:[9700,9700,-1,-1,9700,-1,-1,0,0]:myorabpel:orabpelServer/288])/288'; nested exception is:
java.lang.NoSuchMethodException: com.carlson.sample.HelloWorldSessionBean_n4vx3i_HomeImpl_812_WLStub.create()
I have a home interface for the EJB which has a 'create' method and my session bean has a ejbCreate method. I am using weblogic.appc to create the stubs and skeletons for the EJB.
Has anyone tried this ?? The tutorial in the download 702.bindings/EJBBinding does something similar to this. But, I am having problems with that too.
Any comments, advice, sample code will be helpful.
Thanks a bunch
- Mahesh :)

I have deployed my Bean Managed Persistance Entity Bean in Weblogic 8.1 App Server. Trying to access the ejb from Synchronous BPEL process. I tried in two ways
1. By accessing the ejb directly from BPEL process, writing the following code in BPEL process
<bpelx:exec xmlns:bpelx="http://schemas.oracle.com/bpel/extension" language="java" version="1.4" name="InventoryEJB">
               <![CDATA[
     // Java code snippet
     try{
     Hashtable properties = new Hashtable();
          properties.put(InitialContext.INITIAL_CONTEXT_FACTORY,
"weblogic.jndi.WLInitialContextFactory");
          properties.put(InitialContext.PROVIDER_URL, "t3://PCIIB07447:7001");
          InitialContext context = new InitialContext(properties);
          InventoryHome home = (InventoryHome) context.lookup("Inventory");
          InventoryRemote remote = home.create();
          int status = remote.getInventory("Chevrolet","2-Door Coupes","Chevy Cobalt",5);
          addAuditTrailEntry("Status is: " + status);
setVariableData("output", "payload",
"/status", new Integer(status));
catch(Exception e){}
     ]]>
          </bpelx:exec>
Also copied the interface files in system\classes directory. I got the expected output but i am not able to view the "Visual Flow". Getting the following error in my BPEL server console
<Sep 9, 2004 12:46:51 PM IST> <Warning> <RMI> <BEA-080003> <RuntimeException thr
own by rmi server: weblogic.management.internal.RemoteMBeanServerImpl.invoke(Lja
vax.management.ObjectName;Ljava.lang.String;[Ljava.lang.Object;[Ljava.lang.Strin
g;)
weblogic.management.NoAccessRuntimeException: Access not allowed for subject: p
rincipals=[], on ResourceType: ServerConfig Action: execute, Target: lookupServe
rRuntime.
weblogic.management.NoAccessRuntimeException: Access not allowed for subject: pr
incipals=[], on ResourceType: ServerConfig Action: execute, Target: lookupServer
Runtime
at weblogic.management.internal.SecurityHelper$IsAccessAllowedPrivilegeA
ction.wlsRun(SecurityHelper.java:564)
at weblogic.management.internal.SecurityHelper$IsAccessAllowedPrivilegeA
ction.run(SecurityHelper.java:456)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(Authenticate
dSubject.java:317)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:
118)
at weblogic.management.internal.SecurityHelper.isAccessAllowed(SecurityH
elper.java:350)
at weblogic.management.internal.RemoteMBeanServerImpl.private_invoke(Rem
oteMBeanServerImpl.java:946)
at weblogic.management.internal.RemoteMBeanServerImpl.invoke(RemoteMBean
ServerImpl.java:908)
at weblogic.management.internal.RemoteMBeanServerImpl_WLSkel.invoke(Unkn
own Source)
at weblogic.rmi.internal.BasicServerRef.invoke(BasicServerRef.java:477)
at weblogic.rmi.internal.BasicServerRef$1.run(BasicServerRef.java:420)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(Authenticate
dSubject.java:353)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:
144)
at weblogic.rmi.internal.BasicServerRef.handleRequest(BasicServerRef.jav
a:415)
at weblogic.rmi.internal.BasicExecuteRequest.execute(BasicExecuteRequest
.java:30)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:197)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:170)
2. The other way i used WSIF frame work, but i could not resolved.
Thanks for your help in advance.

Invoking service from OSB throws Request Entity Too Large fault

Invoking .net service with large(>1M) base64Binary field from OSB returns "BEA-380000:Request Entity Too Large" error.
How to enlagre the maximum message size?

You have to slightly adjust WebLogic configuration:
http://download.oracle.com/docs/cd/E12840_01/wls/docs103/config_wls/web_server.html#wp1059784

Getting a security exception when invoking EJB from a webservice

Hi,
I am getting the following exception when Invoke an EJB from a web service.
The EJB fails when it tries to access a remote object(RMI).
When I invoke the EJB directly I dont get this exception.
Both the EJB and the WS are deployed as part of the same application on weblogic 9.2 .
the WS was created by jwsc ant task.
This is the exception:
java.rmi.ServerException: RemoteException occurred in server thread; nested exce
ption is:
java.rmi.UnmarshalException: error unmarshalling arguments; nested excep
tion is:
java.lang.ClassNotFoundException: com.bea.xml.XmlCalendar (no security m
anager: RMI class loader disabled)
at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:292)
at sun.rmi.transport.Transport$1.run(Transport.java:148)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.Transport.serviceCall(Transport.java:144)
at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:4
60)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport
.java:701)
at java.lang.Thread.run(Thread.java:534)
at sun.rmi.transport.StreamRemoteCall.exceptionReceivedFromServer(Stream
RemoteCall.java:247)
at sun.rmi.transport.StreamRemoteCall.executeCall(StreamRemoteCall.java:
223)
at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:126)
at com.netcom.server.rmi.RequestHandlerImpl_
Stub.copy(Unknown Source)
Message was edited by:
guyh

Hi Jitu,
I changed the wsdl. And so I don�t get the warning anymore. My Webservice also runs well, now. Thanks anyway for the reply.
There is a nice tech article on the sun network, which solved my problem. The basic idea is to split the wsdl into 2 wsdl documents. one containing all the porttypes messages and so on. And the other wsdl contains the binding and service elements.
If you are interested check out this link:
http://java.sun.com/developer/technicalArticles/xml/jaxrpcpatterns/index2.html
thanks,
footman

Java.lang.ClassCastException when invoking EJB from BPEL

Hi,
We have a EJB deployed in one OC4J instance and the BPEL is deployed in another OC4J instance. ClassCastException occurs when the BPEL invokes the EJB. Any feedback would be appreciated.
Regards,
M.Rajesh

Hi Rajesh,
I am facing the same issue.
Did this issue get resolved at your end?
Thanks,
Mahendra

Problem invoking EJB from client

I'm using J2EE 1.4 to package this application
but I get an internal error when trying to call the servlet client
here are the codes for the stateless Bean
import java.util.*;
import java.io.*;
import javax.ejb.SessionBean;
import javax.ejb.SessionContext;
public class LoanBean implements SessionBean
private javax.ejb.SessionContext m_ctx = null;
public void setSessionContext(SessionContext ctx)
     m_ctx = ctx;
public void ejbCreate() throws java.rmi.RemoteException,javax.ejb.CreateException
     System.out.println("ejbCreate() on obj" + this);
public void ejbRemove()
     System.out.println("ejbRemove() on obj" + this);
public void ejbActivate()
     System.out.println("ejbActivate() on obj" + this);
public void ejbPassivate()
     System.out.println("ejbPassivate() on obj" + this);
public float calculateInterest(float rate, float time, float amount)throws java.rmi.RemoteException
     float interest = time * amount * (rate/ 100);
     return interest;
the code for the home interface
import javax.ejb.EJBHome;
public interface LoanHome extends EJBHome
     public Loan create() throws java.rmi.RemoteException,javax.ejb.CreateException;
the code for the remote interface
import javax.ejb.EJBObject;
public interface Loan extends EJBObject
     public float calculateInterest(float rate, float time, float amount)throws java.rmi.RemoteException;
and here is the code for my servlet client
import java.io.*;
import javax.servlet.*;
import javax.naming.*;
import javax.servlet.http.*;
import javax.rmi.PortableRemoteObject;
import javax.ejb.*;
public class LoanServlet extends HttpServlet
     public void doGet(HttpServletRequest req, HttpServletResponse res)throws ServletException, IOException
          PrintWriter out = res.getWriter();
          res.setContentType("text/html");
          float rate = Float.valueOf(req.getParameter("rate")).floatValue();
          float time = Float.valueOf(req.getParameter("time")).floatValue();
          float amount = Float.valueOf(req.getParameter("amount")).floatValue();
          Loan myLoanRemote = null;
          LoanHome myLoanHome = null;
          InitialContext initCon = null;
          try
               initCon = new InitialContext();
          catch(Exception e)
               out.println("First" + e.toString());
          try
               String JNDIName = "ejb/SimpleLoan";
               Object obj = initCon.lookup(JNDIName);
               myLoanHome = (LoanHome)PortableRemoteObject.narrow(obj, LoanHome.class);
          catch(Exception e)
               out.println("Second" + e.toString());
          try
               ****myLoanRemote = myLoanHome.create();
          catch(CreateException e)
               out.println("Third" + e.toString());
          float interest = myLoanRemote.calculateInterest(rate, time, amount);
          out.println("<B> Interest : " + interest + " </B>");
I get an internal error that points to the line with **** (that is line 40)
help pls

tried it but got this error
java.lang.NullPointerException
     at LoanServlet.doGet(LoanServlet.java:40)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:748)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:861)
     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:324)
     at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:289)
     at java.security.AccessController.doPrivileged(Native Method)
     at javax.security.auth.Subject.doAsPrivileged(Subject.java:500)
     at org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:311)
     at org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:205)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:283)
     at org.apache.catalina.core.ApplicationFilterChain.access$000(ApplicationFilterChain.java:102)
     at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.java:192)
     at java.security.AccessController.doPrivileged(Native Method)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
     at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:263)
     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:156)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:569)
     at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:261)
     at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:215)
     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:156)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:569)
     at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:200)
     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:156)
     at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:180)
     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:154)
     at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:582)
     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:154)
     at com.sun.enterprise.webservice.EjbWebServiceValve.invoke(EjbWebServiceValve.java:134)
     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:154)
     at com.sun.enterprise.security.web.SingleSignOn.invoke(SingleSignOn.java:254)
     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:154)
     at com.sun.enterprise.web.VirtualServerValve.invoke(VirtualServerValve.java:209)
     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:154)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:569)
     at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:161)
     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:156)
     at com.sun.enterprise.web.VirtualServerMappingValve.invoke(VirtualServerMappingValve.java:166)
     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:154)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:569)
     at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:979)
     at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:211)
     at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:692)
     at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:647)
     at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:589)
     at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:691)
     at java.lang.Thread.run(Thread.java:534)
|#]

Duplicate class definition error while invoking EJB from ADF project

Hi,
I am using Jdeveloper TP3 and facing the following problem.
I have built an EJB project and am ran them successfully in the embedded OC4J via a standalone java program.
Now I created another project with ADF capabilities and when I tried to ping the EJB i get the following exception
The application named, current-workspace-app, could not start due to an error.
duplicate class definition: javax/faces/context/FacesContextFactory Invalid class: javax.faces.context.FacesContextFactory Loader
This is happenning due to class conflicts between javaee.jar and trinidad-impl.jar/adf-richclient-impl.jar.
Is there any way of bypassing this class loader issue?

Hi,
actually I didn' try the JNDI lookup but used resource injection instead
In a JSF managed bean I use
@EJB Ejb30SessionFacadeLocal myLocalInterface;
public SortableModel getTableModel() {
List rows = new ArrayList<Employees>();
rows = myLocalInterface.queryEmployeesFindAll();
this.tableModel = new SortableModel(rows);
return tableModel;
Its a EJB 3.0 session bean that accesses a Local interface. However, if the remote is on the same server then I would think that using @EJB Ejb30SessionFacadeRemote myRemoteInterface; does similar
Frank

'Class Cast Exception' while invoking a EJB from a Servlet

          Hi,
          I am working on J2EE applications.I am using Webgain studio and weblogic server.I
          got a problem while invoking EJB from the servlet.
          While calling an EJB from the servlet, it is giving that "Class Cast Exception".This
          is because, the remote home reference is not able to type casted to the"Home Interface"
          of the EJB, even if I type casted explicitly. It is creating the context and able
          to identify the EJB with the JNDI name.
          Could please help me in solving this problem.I am pasting the code here.
          Thanks in advance,
          Dharma
          public void doGet(HttpServletRequest req, HttpServletResponse resp)
               throws ServletException, IOException
                    resp.setContentType("text/html");
                    PrintWriter out = new PrintWriter(resp.getOutputStream());
          try
          Context context=getInitialContext();
          Object reference=context.lookup("ArlProjContractorAppletSession");
          ArlProjContractorAppletSessionHome home=(ArlProjContractorAppletSessionHome)PortableRemoteObject.narrow(reference,ArlProjContractorAppletSessionHome.class);
          //Exception is occuring in the above statement. It is unable
          //to cast to the home interface
                    ArlProjContractorAppletSession the_ejb=null;
          try
          the_ejb=home.create();
          System.out.println("the_ejb = " + the_ejb.toString());
          catch(Exception e)
          e.printStackTrace();
          catch(Exception e)
          e.printStackTrace();
                    // to do: code goes here.
                    out.println("<HTML>");
                    out.println("<HEAD><TITLE>Contractor TimeTracker</TITLE></HEAD>");
                    out.println("<BODY>");
                    // to do: your HTML goes here.
                    out.println("</BODY>");
                    out.println("</HTML>");
                    out.close();


          I came across this kind of problem once. My problem went away after I upgraded
          from 5.1 SP6 to 5.1 SP8.
          "Dharma" <[email protected]> wrote:
          >
          >Hi,
          >
          >I am working on J2EE applications.I am using Webgain studio and weblogic
          >server.I
          >got a problem while invoking EJB from the servlet.
          >
          >While calling an EJB from the servlet, it is giving that "Class Cast
          >Exception".This
          >is because, the remote home reference is not able to type casted to the"Home
          >Interface"
          >of the EJB, even if I type casted explicitly. It is creating the context
          >and able
          >to identify the EJB with the JNDI name.
          >
          >Could please help me in solving this problem.I am pasting the code here.
          >
          >Thanks in advance,
          >Dharma
          >
          >
          >public void doGet(HttpServletRequest req, HttpServletResponse resp)
          >     throws ServletException, IOException
          >     {
          >          resp.setContentType("text/html");
          >          PrintWriter out = new PrintWriter(resp.getOutputStream());
          >
          > try
          > {
          >
          > Context context=getInitialContext();
          >
          > Object reference=context.lookup("ArlProjContractorAppletSession");
          >
          > ArlProjContractorAppletSessionHome home=(ArlProjContractorAppletSessionHome)PortableRemoteObject.narrow(reference,ArlProjContractorAppletSessionHome.class);
          >
          >//Exception is occuring in the above statement. It is unable
          >//to cast to the home interface
          >
          >          ArlProjContractorAppletSession the_ejb=null;
          >
          > try
          > {
          > the_ejb=home.create();
          >
          > System.out.println("the_ejb = " + the_ejb.toString());
          >
          > }
          > catch(Exception e)
          > {
          > e.printStackTrace();
          > }
          > }
          > catch(Exception e)
          > {
          > e.printStackTrace();
          > }
          >          // to do: code goes here.
          >
          >          out.println("<HTML>");
          >          out.println("<HEAD><TITLE>Contractor TimeTracker</TITLE></HEAD>");
          >          out.println("<BODY>");
          >
          >          // to do: your HTML goes here.
          >
          >          out.println("</BODY>");
          >          out.println("</HTML>");
          >          out.close();
          >     }
          >
          >
          >
          >
          >

Error while running EJB from java client on JBOSS

Hi
As i am new to EJB i have created a helloworld application in ejb which is working fine when i try to call it from servlet but when i try to invoke the same ejb from java client (i.e from diff jvm) on jboss i got the following error:
javax.naming.CommunicationException: Could not obtain connection to any of these urls: localhost:1099 and discovery failed with error: javax.naming.CommunicationException: Receive timed out [Root exception is java.net.SocketTimeoutException: Receive timed out] [Root exception is javax.naming.CommunicationException: Failed to connect to server localhost:1099 [Root exception is javax.naming.ServiceUnavailableException: Failed to connect to server localhost:1099 [Root exception is java.net.ConnectException: Connection refused]]]
     at org.jnp.interfaces.NamingContext.checkRef(NamingContext.java:1399)
     at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:579)
     at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:572)
     at javax.naming.InitialContext.lookup(InitialContext.java:351)
     at com.gl.TestClient.main(TestClient.java:39)
Caused by: javax.naming.CommunicationException: Failed to connect to server localhost:1099 [Root exception is javax.naming.ServiceUnavailableException: Failed to connect to server localhost:1099 [Root exception is java.net.ConnectException: Connection refused]]
     at org.jnp.interfaces.NamingContext.getServer(NamingContext.java:254)
     at org.jnp.interfaces.NamingContext.checkRef(NamingContext.java:1370)
     ... 4 more
Caused by: javax.naming.ServiceUnavailableException: Failed to connect to server localhost:1099 [Root exception is java.net.ConnectException: Connection refused]
     at org.jnp.interfaces.NamingContext.getServer(NamingContext.java:228)
     ... 5 more
Caused by: java.net.ConnectException: Connection refused
     at java.net.PlainSocketImpl.socketConnect(Native Method)
     at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333)
     at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:195)
     at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:182)
     at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)
     at java.net.Socket.connect(Socket.java:519)
     at java.net.Socket.connect(Socket.java:469)
     at java.net.Socket.<init>(Socket.java:366)
     at java.net.Socket.<init>(Socket.java:266)
     at org.jnp.interfaces.TimedSocketFactory.createSocket(TimedSocketFactory.java:69)
     at org.jnp.interfaces.TimedSocketFactory.createSocket(TimedSocketFactory.java:62)
     at org.jnp.interfaces.NamingContext.getServer(NamingContext.java:224)
     ... 5 more
Following is my code:
Home Interface:
package com.gl;
import javax.ejb.CreateException;
public interface testHome extends EJBHome {
     String JNDI_NAME = "testBean";
     public     test create()
     throws java.rmi.RemoteException,CreateException;
Remote Interface:
package com.gl;
import java.rmi.RemoteException;
import javax.ejb.EJBObject;
public interface test extends EJBObject {
     public String welcomeMessage() throws RemoteException;
Bean:
package com.gl;
import java.rmi.RemoteException;
import javax.ejb.EJBException;
import javax.ejb.SessionBean;
import javax.ejb.SessionContext;
public class testbean implements SessionBean {
     public void ejbActivate() throws EJBException, RemoteException {
          // TODO Auto-generated method stub
     public void ejbPassivate() throws EJBException, RemoteException {
          // TODO Auto-generated method stub
     public void ejbRemove() throws EJBException, RemoteException {
          // TODO Auto-generated method stub
     public void setSessionContext(SessionContext arg0) throws EJBException,
               RemoteException {
          // TODO Auto-generated method stub
     public void ejbCreate(){}
     public String welcomeMessage(){
          return "Welcome to the World of EJB";
ejb-jar.xml:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE ejb-jar PUBLIC "-//Sun Microsystems, Inc.//DTD Enterprise JavaBeans 2.0//EN" "http://java.sun.com/dtd/ejb-jar_2_0.dtd">
<ejb-jar>
<enterprise-beans>
<session>
<ejb-name>testBean</ejb-name>
<home>com.gl.testHome</home>
<remote>com.gl.test</remote>
<ejb-class>com.gl.testbean</ejb-class>
<session-type>Stateless</session-type>
<transaction-type>Container</transaction-type>
</session>
</enterprise-beans>
</ejb-jar>
jboss.xml:
<?xml version='1.0' ?>
<!DOCTYPE jboss PUBLIC "-//JBoss//DTD JBOSS 3.2//EN" "http://www.jboss.org/j2ee/dtd/jboss_3_2.dtd">
<jboss>
<enterprise-beans>
<entity>
<ejb-name>testBean</ejb-name>
<jndi-name>testBean</jndi-name>
</entity>
</enterprise-beans>
</jboss>
Client code:
package com.gl;
import java.util.Properties;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.rmi.PortableRemoteObject;
public class TestClient {
     public static void main(String[] args) throws Exception{
               try{
               /*     Properties props=new Properties();
                    props.put(Context.INITIAL_CONTEXT_FACTORY, "org.jnp.interfaces.NamingContextFactory");
                    props.put(Context.URL_PKG_PREFIXES, "org.jboss.naming:org.jnp.interfaces");
                    props.put(Context.PROVIDER_URL, "jnp://localhost:1099");
               Properties props = new Properties();
props.put(Context.INITIAL_CONTEXT_FACTORY,
"org.jnp.interfaces.NamingContextFactory");
props.put(Context.PROVIDER_URL, "localhost:1099");
                    System.out.println("Properties ok");
                    //env.setProperty(Context.INITIAL_CONTEXT_FACTORY,"org.jboss.naming.HttpNamingContextFactory");
                    //env.put(Context.PROVIDER_URL,"http://localhost:8080");
                    //env.put(Context.SECURITY_PRINCIPAL, "");
                    //env.put(Context.SECURITY_CREDENTIALS, "");
                    Context ctx=new InitialContext(props);
                    System.out.println("context ok");
                    //testHome home = (testHome)ctx.lookup("testBean");
                    Object obj = ctx.lookup ("testBean");
                    System.out.println("ojb = " + obj);
                    testHome ejbHome = (testHome)PortableRemoteObject.narrow(obj,testHome.class);
               test ejbObject = ejbHome.create();
               String message = ejbObject.welcomeMessage();
                    System.out.println("home ok");
                    System.out.println("remote ok");
                    System.out.println(message);
                    catch(Exception e){e.printStackTrace();}
I am able to successfully deployed my ejb on JBOSS but i m getting above error when i am trying to invoke ejb from java client.
kindly suggest me something to solve this issue.
Regards
Gagan
Edited by: Gagan2914 on Aug 26, 2008 3:28 AM

Is it a remote lookup? Then maybe this will help:
[http://wiki.jboss.org/wiki/JBoss42FAQ]
- Roy

Servlet invoke EJB

Hi,
I have a servlet and an EJB application (a jar file). Without putting them together into an ear file, how can I invoke EJB from the servlet ? I always get the naming lookup exception,
javax.naming.NamingException: Error instantiating web-app JNDI-context: No location specified and no suitable instance of the type 'Cart' found for the ejb-ref MyCart
Thanks
John

you want to deploy your EJB in a "parent application" and the servlet in a "child application" then it can see the EJB in the parent's namespace.

How to limit the response rows while invoking a stored procedure from OSB 10gR3

Dear Experts,
I am trying to limit the response while invoking a stored procedure from OSB via DB adapter.
Here the stored procedure returns cursors as response. I tried using the MaxTransactionSize propertiy (which is used for polling the database option in DB adapter).
We are investigating the ways to protect the application from response containing huge number of rows.
Is there any way to restrict the number of rows returned in each and every cursor while invoking the stored procedure via DB adapter?
Thanks
Ram

Hi James ,
I want to know how to run stored procedure using jca adapter in OSB11g.
I am new to stored prcoedure,will be great if you could share some example on it as above.
Req: Single input xml will be posted on queue ,need to perform 3 DB operation (with same input):
1.Insert operation to insert master table contents.
2.select the primary key column value from master table for the last inserted record.
3.Need to insert primary key column value + other fields frm same xml file to child table.
Pls assist me on how to create a simple stored procedure and to run the same with OSB 11g.I am familiar with creation of DB adapter using Jdeveloper,we have option to perform insert and to call stored procedure here,will it be useful for this scenario?
Edited by: Anitha R on Nov 21, 2010 9:30 PM

Unable to invoke a EJB from a BPEL process

I am unable to invoke a EJB from a BPEL process. Whenever I try to test it from the oracle EM, I get the below exception. I am using WebLogic 10.3.3, SOA suite 11.1.1.3 and JDev 11.1.1.3 .
This is what I see from the EM....
Non Recoverable System Fault :
javaInterface attribute for the binding is missing or the inteface class is not available.
Below is a part of the stack trace from the soa server log…
Caused By: oracle.classloader.util.AnnotatedClassNotFoundException:
Missing class: com.abc.GreetingEJBBean
Dependent class: oracle.integration.platform.blocks.ejb.SDOEjbReferenceD
elegateImpl
Loader: sun.misc.Launcher$AppClassLoader@20929799
Code-Source: /C:/Oracle_latest/Middleware/home_11gR1/Oracle_SOA1/soa
/modules/oracle.soa.fabric_11.1.1/fabric-runtime.jar
Configuration: /C:/Oracle_latest/Middleware/home_11gR1/Oracle_SOA1/soa
/modules/oracle.soa.fabric_11.1.1/fabric-runtime.jar
Piece of xml from the composite.xml
<reference name="GreetingService"
ui:wsdlLocation="http://123.45.218.140:7001/GreetingEJBBean/GreetingEJBBeanService?wsdl">
<interface.wsdl interface="http://abc.com/#wsdl.interface(GreetingEJBBean)" />
<binding.ejb uri="GreetingEJB-GreetingEJB-GreetingEJB"
javaInterface="com.abc.GreetingEJB"/>
</reference>
Looks like its not able to find the javaInterface mentioned above.
I have a simple EJB with one business method and a very simple BPEL process.
@Stateless(name = "GreetingEJB", mappedName = "GreetingEJB-GreetingEJB-GreetingEJB")
@WebService
public class GreetingEJBBean implements GreetingEJB {
public GreetingEJBBean() {
public String greetUser(String name){
return ("Hello " + name);
Any help would be greatly appreciated.

I haven't tried from a BPEL process, but I have had success (as in Lucas's blogs) of using services and references as EJB Java Interface. This is with EJB java interfaces solely of base types (i.e. String foo(String s)).
At high level here's what I have noted so far:
1. Per Lucas's blog, @javaInterface is not being added to the ejb.binding automatically but it's not clear to me when this is and is not required given that interface.java is specified for the reference or service. Would interface.java and @javaInterface ever be different? I've been adding @javaInterface manually anyways since Lucas is a smart guy and I'd rather avoid errors. :-)
2. Dropping an EJB interface jar in SCA-INF/lib works, but I've had the problem that the JDeveloper SOA Plugin doesn't see those classes until I stop and restart JDeveloper. Until then, I'm confronted with the java->wsdl mapping error. I was sort of primed to figure this one out since I ran into similar issues with SOA SpringBean components.
3. Dropping EJB interface source in SCA-INF/src is more reliable, because then I can build the project (i.e. create SCA-INF/classes) and the JDeveloper SOA Plugin seems to resolve these brand new classes immediately.
4. I've tried to invoke an EJB java-interface reference with a slightly complicated java interface (a class parameter with some fields, one of which is an array of another class). The auto-generated WSDL doesn't look exactly right to me (but I'm new to JAXB). Mediator maps to it just fine and the project compiles and deploys normally but fails at runtime. I have not researched in depth. It's not clear to me from the documentation and release notes whether I should expect for it to work, or whether I should expect to have to create my own JAXB mapping. If the latter, I really need a good example!

Error acceessing remote EJB 2.0 from OSB

Hi All,
I am trying to access a remote EJB(2.0) from OSB. When i am trying to connect to the EJB i am getting this error.
"java.net.ConnectException: Connection refused: connect; No available router to destination"
I have built the WSDl based on the client jar that is provided and then configured the JNDI Provider. Then I provided the endpoint EJB URL in the following format.
ejb:JNDIProviderName:ConnectionfactoryName:JNDIName.
Let me know if i have missed out any configuration in order to access EJB. Your help is appreciated as we are struck in SIT.
Thanks,
B
.

Strange question. If you know EJB 2 and you know EJB 3, you should be able to answer this question yourself. If you don't know one of the two, you shouldn't be asking this question but hitting the books.
As for the errors you are getting, the error couldn't be more clear:
java.lang.NoClassDefFoundError: com/fammllc/exceptions/LubeNominationExceptionIt doesn't even have something to do with EJBs, its a simple case of class not found. The warning is more odd as the EJB 3 spec defines that transactions should default to REQUIRED, not "NOT_SUPPORTED". If EJB 3 would really be in play here, you wouldn't be getting this warning. Its probably a case of "read the manual" - the manual of whatever container you are using (I'm guessing Weblogic, which has its own forum here: https://forums.oracle.com/forums/category.jspa?categoryID=193).
Edited by: gimbal2 on May 10, 2012 4:56 AM

How can one invoke a WebLogic EJB from a BPEL Server hosted on OC4J?

How can one invoke a WebLogic EJB from a BPEL Server hosted on OC4J?
Reason I ask is I keep getting this error:
javax.naming.NoInitialContextException: Cannot instantiate cla
ss: weblogic.jndi.WLInitialContextFactory [Root exception is java.lang.ClassNotF
oundException: weblogic.jndi.WLInitialContextFactory]
Note: I am using <bpelx:exec> as a way to execute some java program.
Essentially my java client (essentially an EJB client hosted on Oc4J) needs access to wlclient.jar since it needs access to weblogic.jndi.WLInitialContextFactory. I have a EJB client running on BPEL server hosted on Oc4J that needs to access some EJBs hosted on weblogic.
Where do I place this wlclient.jar so that BPEL PM can start peacefully and at runtime discover the InitialContextFactory classes?
Placing it in the j2ee/home/applib doesn't solve the problem. The server fails to start up if I do this
I tried placing it in BPEL-INF\lib directory ...
I still get the same exception...see below for exception dump
I verified the BPEL suitcase, and it in fact does contain the jar file wlclient.jar
integration\orabpel\domains\default\deploy contains the bpel_BPELProcess2_1.0.jar file and snapshot of that is as follows:
<PRE>
│ bpel.xml
│ BPELProcess2.bpel
│ BPELProcess2.jpr
│ BPELProcess2.wsdl
│ bpel_BPELProcess2_1.0.jar
│ build.xml
│ buildxml.copy
│ graphics.xml
│
├───BPEL-INF
│ └───lib
│ myEJB.jar
│ wlclient.jar
│
├───META-INF
│ MANIFEST.MF
│
└───output
bpel_BPELProcess2_1.0.jar
</PRE>
I tried using the BPEL-INF\jar directory...Is this something the obant automatically detects? or do I have to modify the build.xml? I created this directory and let Jdev deploy to local BPEL server->default domain handle it
#####################3
I even tried copying the wlclient.jar to
integration\orabpel\system\classes but this doesn't help since the BPEL PM fails to start if I explode this jar into this directory.
In short,where do I place the wlclient.jar so that this exception can be contained.
I edited the build.xml to point to the jar, that too didn't work, unless I made some mistake in the file
<bpelc classpath="${basedir}/BPEL-INF/classes;${home}/system/classes;${home}/lib/j2ee_1.3.01.jar;${basedir}/BPEL-INF/jar/wlclient.jar" input="${basedir}/bpel.xml" rev="${rev}" deploy="${deploy}" />
</target>
</project>
DETAILS on ERROR
I get the following error
Process "BPELProcess2" (revision "1.0") successfully compiled.
<2005-12-14 09:17:55,770> <INFO> <default.collaxa.cube.engine.deployment> Proces
s "BPELProcess2" (revision "1.0") successfully loaded.
05/12/14 09:18:36 weblogic.jndi.WLInitialContextFactory
javax.naming.NoInitialContextException: Cannot instantiate cla
ss: weblogic.jndi.WLInitialContextFactory [Root exception is java.lang.ClassNotF
oundException: weblogic.jndi.WLInitialContextFactory]
05/12/14 09:18:36 at javax.naming.spi.NamingManager.getInitialContext(Nami
ngManager.java:652)
05/12/14 09:18:36 at javax.naming.InitialContext.getDefaultInitCtx(Initial
Context.java:243)
05/12/14 09:18:36 at javax.naming.InitialContext.init(InitialContext.java:
219)
05/12/14 09:18:36 at javax.naming.InitialContext.<init>(InitialContext.jav
a:195)
05/12/14 09:18:36 at com.ejb.test.MapFinder.getDefaultMapName(Map
Finder.java:37)
##################3
with the bpelx all I have is two lines of code that creates a java object and calls a method on it.
The method does this:
    private String initialContextFactory = "weblogic.jndi.WLInitialContextFactory";
    private String providerUrl = "t3://localhost:7001";
    private String urlPkgPrefixes = "";
    private String mapEjbJndiName = "ejb/mycompany/Redlands";
    public String getDefaultMapName() {
      try {
          Hashtable env = new Hashtable();
          env.put(Context.INITIAL_CONTEXT_FACTORY, getInitialContextFactory());
          env.put(Context.PROVIDER_URL, getProviderUrl());
          if (getUrlPkgPrefixes() != null && !getUrlPkgPrefixes().equals(""))
              env.put(Context.URL_PKG_PREFIXES, getUrlPkgPrefixes());
          System.out.println("    " + getInitialContextFactory());
          System.out.println("    " + getProviderUrl());
          System.out.println("    " + getUrlPkgPrefixes());
          System.out.println("    " + getEjbName());
          // Get a naming context
          context = new InitialContext(env);
           Object ms = context.lookup(getEjbName());
          MyEJBHome home = (MyEJBHome ) PortableRemoteObject.narrow(ms, MyEJBHome.class);
          myEjb = home.create();
          return myEjb.getDefaultName();
      } catch (RemoteException re){
          System.out.println(re.getCause().getMessage());
      catch (Exception ex) {
          ex.printStackTrace();
      return null; //if unable to resolve the context factory etc...
    }

I did exactly as you suggested. I edited the application.xml and added this
<library path="C:\ArcGIS\test\bea\wlclient.jar"/>
I didn't add weblogic because the needed classes were all in wlclient.jar
I also edited the BASE_OB_CLASSPATH to include this jar.
Here is the result when I just start BPEL PM Server. Somehow BPEL PM doesn't like to have wlclient.jar in its classpath during startup.
Failed to create "worker" bean; exception reported is: "javax.naming.NameNotFoun
dException: remaining name: env
at weblogic.j2eeclient.SimpleContext.lookup(SimpleContext.java:49)
at weblogic.j2eeclient.SimpleContext.lookup(SimpleContext.java:57)
at weblogic.j2eeclient.SimpleContext.lookup(SimpleContext.java:62)
at javax.naming.InitialContext.lookup(InitialContext.java:347)
at com.collaxa.cube.engine.ejb.impl.WorkerBean.ejbCreate(WorkerBean.java
:49)
at sun.reflect.GeneratedMethodAccessor2.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at com.evermind.server.ejb.MessageDrivenHome.getInstance(MessageDrivenHo
me.java:1235)
at com.evermind.server.ejb.MessageDrivenHome$2.run(MessageDrivenHome.jav
a:1150)
at com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run(Relea
sableResourcePooledExecutor.java:186)
at java.lang.Thread.run(Thread.java:534)
<2005-12-29 13:39:05,281> <ERROR> <collaxa> <ServerManager::loadAllDomains>
ORABPEL START-UP ERROR!!!!!!!!
OraBPEL run-time system failed to start due to exception:
Could not initialize jms connection pool.
Could not initialize connection pool for connection factory "java:comp/env/jms/
ollaxa/BPELInvokerQueueFactory"; the reason is remaining name: env/jms/collaxa/
PELInvokerQueueFactory.
Note: So what I did was to removed the entry from application.xml and tried with just obsetenv.bat having the wlclient.jar added to it. This too failed!!
Here is a snapshot of the error I got.
Process "BPELProcess2" (revision "1.0") successfully compiled.
<2005-12-29 13:53:11,207> <INFO> <default.collaxa.cube.engine.deployment> Proces
s "BPELProcess2" (revision "1.0") successfully loaded.
05/12/29 13:53:32 Cannot instantiate class: weblogic.jndi.WLInitialContextFactor
y
05/12/29 13:53:32 javax.naming.NoInitialContextException: Cannot instantiate cla
ss: weblogic.jndi.WLInitialContextFactory [Root exception is java.lang.ClassNotF
oundException: weblogic.jndi.WLInitialContextFactory]
05/12/29 13:53:32 at javax.naming.spi.NamingManager.getInitialContext(Nami
ngManager.java:652)
05/12/29 13:53:32 at javax.naming.InitialContext.getDefaultInitCtx(Initial
Context.java:243)
05/12/29 13:53:32 at javax.naming.InitialContext.init(InitialContext.java:
219)
05/12/29 13:53:32 at javax.naming.InitialContext.<init>(InitialContext.jav
a:195)
05/12/29 13:53:32 at com.esri.adf.ejb.test.MapFinder.getDefaultMapName(Map
Finder.java:57)
05/12/29 13:53:32 at bpel.p0.ExecLetBxExe1.execute(ExecLetBxExe1.java:62)
05/12/29 13:53:32 at com.collaxa.cube.engine.ext.wmp.BPELXExecWMP.__execut
eStatements(BPELXExecWMP.java:49)
05/12/29 13:53:32 at com.collaxa.cube.engine.ext.wmp.BPELActivityWMP.perfo
rm(BPELActivityWMP.java:185)
05/12/29 13:53:32 at com.collaxa.cube.engine.CubeEngine.performActivity(Cu
beEngine.java:3398)
05/12/29 13:53:32 at com.collaxa.cube.engine.CubeEngine.handleWorkItem(Cub
eEngine.java:1905)
05/12/29 13:53:32 at com.collaxa.cube.engine.dispatch.message.instance.Per
formMessageHandler.handleLocal(PerformMessageHandler.java:75)
05/12/29 13:53:32 at com.collaxa.cube.engine.dispatch.DispatchHelper.handl
eLocalMessage(DispatchHelper.java:100)
05/12/29 13:53:32 at com.collaxa.cube.engine.dispatch.DispatchHelper.sendM

Regarding issues connecting to EJB 2 from OSB

Hi,
I am trying to connect from OSB 11g to EJB 2 which is deployed on weblogic 7.1.
I am getting this error.
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/">
<soapenv:Body>
<soapenv:Fault>
<faultcode>soapenv:Server</faultcode>
<faultstring>BEA-380002: Error accessing the JNDI context for the EJB call: java.net.ConnectException: Bootstrap to failed. It is likely that the remote side declared peer gone on this JVM</faultstring>
<detail>
<con:fault xmlns:con="http://www.bea.com/wli/sb/context">
<con:errorCode>BEA-380002</con:errorCode>
<con:reason>Error accessing the JNDI context for the EJB call: java.net.ConnectException:: Bootstrap to failed. It is likely that the remote side declared peer gone on this JVM</con:reason>
<con:location>
<con:node>GTX</con:node>
<con:path>request-pipeline</con:path>
</con:location>
</con:fault>
</detail>
</soapenv:Fault>
</soapenv:Body>
</soapenv:Envelope>
Can any one please help me in resolving this issue.
Thanks,

Hi,
Thank you for posting in Windows Server Forum.
As per your comment, they have Remote Desktop client v5.2 and I suspect that due to this reason they can’t connect the remote session as the version if very old. We need to use latest RDP version to connect successfully. Also please check the certificate which
is used by server, please check below article for information.
Remote Desktop disconnected or can’t connect to remote computer or to Remote Desktop server (Terminal Server) that is running Windows Server 2008 R2
http://support.microsoft.com/default.aspx?scid=kb;en-US;2477176
Hope it helps!
Thanks.
Dharmesh Solanki
TechNet Community Support

Invoking EJB from OSB

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