How to call session EJB from EP service in EP 7.0?

Hi,
I am trying to invoke stateless session EJB from my portal service. Both the service and EJB are deployed on the same server which is EP 7.0.
I found [this|http://help.sap.com/saphelp_nw70/helpdata/EN/42/9ddcc9bb211d72e10000000a1553f6/frameset.htm] in SAP help and tried to implement it (added PrivateSharingReference to portalapp.xml and implemented the code), but everytime I try to lookup the session bean and cast it using P4ObjectBroker.narrow() method, I get java.lang.ClassCastException. The object found in JNDI and my portal service have different classloaders, so I suppose this is the problem, but I don't know how to handle it...
Can anyone please help me?
Regards,
Tomas

Hi Satya ,
please go though following blog for used DC concept.
Componentization of Webdynpro Application in CE7.1
In netweaver 7.1 interface controler is abstract and component controller is implementing interface controller so the context data and methods have to be implemented by component controller

Similar Messages

How to Call one EJB from another

Hi all
I am trying to call one EJB in one system from another EJB residing on diferent system...
Both are Stateless session beans ...
I can't use No-args Intialcontext() as i need to specify the Ip address of other system to be looked up.....
So i am using properties Dorg.omg.CORBA.ORBInitlalHost....
But its not looking up..Its telling not bound...But i called it from standalone client remotely...
Am i wrong..?
I hope I am in right path....
I hope ill get reply as fast as possible...
Gopal V

Hi ken Thanks for replying....
Ya i packed it as a jar (using Export tool in Eclipse3.2)....
I am using SUN AS 9.....
I packed bean1 and bean2 as two different jars in the same domain...
Here is my code...
Bean1:
@Stateless(mappedName="ejb/Second")
public class SecondIMPL implements SecondRemote {
     public FirstRemote obj;
     public String connect() {
          try{
               InitialContext ctx= new InitialContext();
               FirstRemote obj =(FirstRemote)ctx.lookup("ejb/First");
               System.out.println("Client :"+obj.bMethod());
          }catch(Exception e){
               e.printStackTrace();
          return "Check server Log";
}Bean2 :
@Stateless(mappedName="ejb/First")
public class FirstIMPL implements FirstRemote {
     public String bMethod() {
          return "From First Bean";
Client:
public static void main(String[] args) {
          try{
               InitialContext ctx= new InitialContext();
               SecondRemote obj =(SecondRemote)ctx.lookup("ejb/Second");
               System.out.println("Client :"+obj.connect());
          }catch(Exception e){
               e.printStackTrace();
Here is my Stack Trace...
[#|2007-05-24T18:35:17.214+0530|WARNING|sun-appserver-pe9.0|javax.enterprise.system.stream.err|_ThreadID=18;_ThreadName=p: thread-pool-1; w: 19;_RequestID=bb4848e7-829a-421d-a560-93659898eb02;|
javax.naming.NamingException: ejb ref resolution error for remote business interfacecom.SecondRemote[Root exception is java.lang.ClassNotFoundException: com.SecondRemote]
     at com.sun.ejb.EJBUtils.lookupRemote30BusinessObject(EJBUtils.java:350)
     at com.sun.ejb.containers.RemoteBusinessObjectFactory.getObjectInstance(RemoteBusinessObjectFactory.java:61)
     at javax.naming.spi.NamingManager.getObjectInstance(NamingManager.java:304)
     at com.sun.enterprise.naming.SerialContext.lookup(SerialContext.java:314)
     at javax.naming.InitialContext.lookup(InitialContext.java:351)
     at com.FirstBean.rediff(FirstBean.java:16)
     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:585)
     at com.sun.enterprise.security.application.EJBSecurityManager.runMethod(EJBSecurityManager.java:1050)
     at com.sun.enterprise.security.SecurityUtil.invoke(SecurityUtil.java:165)
     at com.sun.ejb.containers.BaseContainer.invokeTargetBeanMethod(BaseContainer.java:2766)
     at com.sun.ejb.containers.BaseContainer.intercept(BaseContainer.java:3847)
     at com.sun.ejb.containers.EJBObjectInvocationHandler.invoke(EJBObjectInvocationHandler.java:190)
     at com.sun.ejb.containers.EJBObjectInvocationHandlerDelegate.invoke(EJBObjectInvocationHandlerDelegate.java:110)
     at $Proxy36.rediff(Unknown Source)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     at java.lang.reflect.Method.invoke(Method.java:585)
     at com.sun.corba.ee.impl.presentation.rmi.ReflectiveTie._invoke(ReflectiveTie.java:121)
     at com.sun.corba.ee.impl.protocol.CorbaServerRequestDispatcherImpl.dispatchToServant(CorbaServerRequestDispatcherImpl.java:650)
     at com.sun.corba.ee.impl.protocol.CorbaServerRequestDispatcherImpl.dispatch(CorbaServerRequestDispatcherImpl.java:193)
     at com.sun.corba.ee.impl.protocol.CorbaMessageMediatorImpl.handleRequestRequest(CorbaMessageMediatorImpl.java:1705)
     at com.sun.corba.ee.impl.protocol.CorbaMessageMediatorImpl.handleRequest(CorbaMessageMediatorImpl.java:1565)
     at com.sun.corba.ee.impl.protocol.CorbaMessageMediatorImpl.handleInput(CorbaMessageMediatorImpl.java:947)
     at com.sun.corba.ee.impl.protocol.giopmsgheaders.RequestMessage_1_2.callback(RequestMessage_1_2.java:178)
     at com.sun.corba.ee.impl.protocol.CorbaMessageMediatorImpl.handleRequest(CorbaMessageMediatorImpl.java:717)
     at com.sun.corba.ee.impl.transport.SocketOrChannelConnectionImpl.dispatch(SocketOrChannelConnectionImpl.java:473)
     at com.sun.corba.ee.impl.transport.SocketOrChannelConnectionImpl.doWork(SocketOrChannelConnectionImpl.java:1270)
     at com.sun.corba.ee.impl.orbutil.threadpool.ThreadPoolImpl$WorkerThread.run(ThreadPoolImpl.java:479)
Caused by: java.lang.ClassNotFoundException: com.Second
     at com.sun.enterprise.loader.EJBClassLoader.findClassData(EJBClassLoader.java:701)
     at com.sun.enterprise.loader.EJBClassLoader.findClass(EJBClassLoader.java:614)
     at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
     at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
     at com.sun.ejb.EJBUtils.getBusinessIntfClassLoader(EJBUtils.java:568)
     at com.sun.ejb.EJBUtils.lookupRemote30BusinessObject(EJBUtils.java:320)
     ... 31 more
|#]

How to call an EJB from another EJB

Hi
I have a problem here. I need to execute a second EJB which has to get the input from the first EJB as data for execution. So when I call the first EJB, the first EJB should give the data to the second EJB and execute it and provide the result.
Cheers,
Raj

ok.. Here it goes.. I am writing a sample code..
public class EJB1LogBean implements SessionBean {
// test is a method of stateless session beam
public void test ( TestVal val )
throws RemoteException{
try {
EJB2LogHome ejb2Home= (EJB2LogHome)getHome("java:comp/env/ejb/EJB2LogHome",1);
EJB2Log ejb2Log = ejb2LogHome.create ( val );
} catch ( CreateException e ) {
     System.out.println("Create Exception occurred ");
     e.printStackTrace();
     } catch ( RemoteException e ) {
     System.out.println( "RemoteException Occured");
e.printStackTrace();
     throw new RemoteException () ;
     } catch(Exception ee) {
ee.printStackTrace();
private EJBHome getHome(String jndiName,int type) {
try {
Context context = new InitialContext();
Object ref = context.lookup( jndiName );
switch(type)
case 1:
EJB2LogHome ejb2LogHome = ( EJB2LogHome )
PortableRemoteObject.narrow( ref, EJB2LogHome.class );
return ejb2LogHome;
} catch ( Exception e ) {
e.printStackTrace();
return null;
}//EJB1LogBean ends
Here as you can see, EJB1LogBean(session bean) is calling a second EJB, EJB2LogBean (entity bean). TestVal is a sample value object passed. It is plain java class and can vary from app to app and it has got nothing to do with ejbs.
"java:comp/env/ejb" is a J2EE standard and while getting a home interface, you have to append the home interface class name to "java:comp/env/ejb". Here I am passing "java:comp/env/ejb/EJB2LogHome" and "1" to getHome method, whose job is to get a reference to a home interface. getHome method is a local method. "1" is passed just to give a flexibility to getHome method as you can have more ejbs to invoked. In that case, you can go on adding different case statements for 2, 3 etc.
The only thing you have to keep in mind is that your deployment descriptor for EJB1LogBean will contain the entires for both the beans i.e. for EJB1LogBean and EJB2LogBean. This is because EJB2LogBean is wrapped by EJB1LogBean.
Hope this helps.
Please let me know if you need anything more.
- Amit

How to call a EJB from other computer

Hi,
I'm beginer to EJB, and I take a book and complete an example. The example has a stateless EJB on the server side, and a client class.
the client code is like this:
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.rmi.PortableRemoteObject;
import java.math.BigDecimal;
//import Converter;
//import ConverterHome;
public class ConverterClient {
public static void main(String[] args) {
try {
Context initial = new InitialContext();
     Object objref = initial.lookup ("java:comp/env/ejb/SimpleConverter");//what to do here??
ConverterHome home =
(ConverterHome)PortableRemoteObject.narrow(objref,
ConverterHome.class);
Converter currencyConverter = home.create();
BigDecimal param = new BigDecimal ("100.00");
BigDecimal amount =
currencyConverter.dollarToYen(param);
System.out.println(amount);
amount = currencyConverter.yenToEuro(param);
System.out.println(amount);
System.exit(0);
} catch (Exception ex) {
System.err.println("Caught an unexpected exception!");
ex.printStackTrace();
I want to run the client class from other machine.
how to complete the following piece of code for making the remote connection:
Context initial = new InitialContext();
Object objref = initial.lookup ("java:comp/env/ejb/SimpleConverter"); //what's the string supousing the server machine name is "server"??
Thanks a lot!!!
George

Thanks, but gimme pls. the URL...I've go to J2EE FAQ
but there are only 13 questions....
Thanks !The link to all the FAQs is on the left side of this page.

How call session bean from Client side

Hi
calling session bean from client side it gives Lookup erroe, it gives JNDI error
how we know session bean is working. in Admin tree bean statis is reb Flaf, and ID is "Down" how we activate it..
null

If you can make a connection using sess_sh, then you know that you have configured your database and listener properly. If it is not working, read the manuals that you can download from technet. They are pretty good, and if you follow the directions, you should see success.
Good Luck!
Brad

Calling EJB from Web Service

Hi Everyone.
I have a question on calling an EJB from a Web Service.
Is this the correct way of calling a EJB out of a web service?
We have another implementation with the same flow, and it's not calling some of the methods, unless we add @TransactionAttribute on the mehod.
I've read some of the articles for adding a transaction attribute, but what I do not understand is that sometimes it work without the attribute and sometimes we need to add the attribute.
Our entry point is the web service and from there we call the local ejb methods.
Here is the example:
1. The Web Service
@WebService()
@Stateless()
public class HouseWS {
 @EJB
 private PeopleLocal people;
 * Web service operation
 @WebMethod(operationName = "sayHallo")
 public void sayHallo() {
 //TODO write your implementation code here:
 people.doPeople();
}2. The Local EJB
@Local
public interface PeopleLocal {
 public void doPeople();
}3. The Bean
@Stateless
public class People implements PeopleLocal {
 public void doPeople() {
 System.out.println("do the people local bean");
 // Add business logic below. (Right-click in editor and choose
 // "Insert Code > Add Business Method")
}

Here is the scenario that we are struggling with.
We go into the @WebMethod(operationName = "stepOneReconciliation") method.
We also added @TransactionAttribute(TransactionAttributeType.NOT_SUPPORTED) to the web service method. Is this necessary?
From the web service method we call the public String stepOneReconciliation(String requestXML) in the bean.
Web service
@WebService()
@Stateless()
public class AeReconciliationWebService {
 @EJB
 private ReconciliationsLocal reconciliationsLocal;
 @WebMethod(operationName = "stepOneReconciliation")
 @TransactionAttribute(TransactionAttributeType.NOT_SUPPORTED)
 public String stepOneReconciliation(@WebParam(name = "requestXML")
 String requestXML) {
 return reconciliationsLocal.stepOneReconciliation(requestXML);
 @WebMethod(operationName = "stepTwoReconciliation")
 @TransactionAttribute(TransactionAttributeType.NOT_SUPPORTED)
 public String stepTwoReconciliation(@WebParam(name = "requestXML")
 String requestXML) {
 return reconciliationsLocal.stepTwoReconciliation(requestXML);
The bean.
All the facade lookups work in the first if(request.getReconType().equals(REVENUE_RECON_TYPE)) statement even though we do not add the TransactionAttributeType.NEVER, but if we go into the else if(request.getReconType().equals(REVENUE_RECON_TYPE)) the lookups doesn't work.
We have added TransactionAttributeType.NEVER to the method and then the else if ejb lookups work.
Why do we need to add the attributeType for the else if lookups to work?
 @EJB
 GeneralLedgerFacadeLocal generalLedgerFacadeLocal;
 @TransactionAttribute(TransactionAttributeType.NEVER)
 public String stepOneReconciliation(String requestXML) {
 String requestName = "stepOneReconciliation";
 String moduleName = "Reconciliation";
 AeReconciliationRequest request = null;
 //read in xml
 if(request.getReconType().equals(SERVICE_RECON_TYPE)) {
 ServiceRecon serviceRecon = serviceReconFacadeLocal.findGreaterThanDateTo(request.getToDate(), request.getServiceCode());
 if(serviceRecon != null) {
 LogUtil.error("AEException", "Recon already occured for a greater date", "" + newRequestId);
 return AeSystemUtils.returnResponse(SystemCodeUtils.AE_INVALID_INFORMATION, null, null, null, stanley);
 } else {
 //Find all values smaller than toDate
 double reconAmount = 0;
 Date toDateUtil = DateUtils.getDateFromString(request.getToDate());
 Date fromDate = null;
 List <ServiceRecon> serviceReconList = serviceReconFacadeLocal.findByServiceCode(request.getServiceCode());
 if(serviceReconList != null && serviceReconList.size() > 0) {
 fromDate = ((ServiceRecon) serviceReconList.get(0)).getReconToTs();
 Calendar tempCal = Calendar.getInstance();
 tempCal.setTimeInMillis(fromDate.getTime());
 tempCal.add(Calendar.MILLISECOND, 1);
 fromDate = tempCal.getTime();
 List<GeneralLedger> generalLedgerList = generalLedgerFacadeLocal.findByBetweenToAndFromDateForServiceCode(request.getServiceCode(), fromDate, toDateUtil);
 for (Iterator<GeneralLedger> it = generalLedgerList.iterator(); it.hasNext();) {
 GeneralLedger generalLedger = it.next();
 if (generalLedger.getAccountDebitId() != null && generalLedger.getAccountDebitId().getAccountTypeId().getCode().equals(AccountTypeStatic.TRADING.getCode()) && generalLedger.getAmount() != null) {
 reconAmount -= generalLedger.getAmount().longValue();
 if (generalLedger.getAccountCreditId() != null && generalLedger.getAccountCreditId().getAccountTypeId().getCode().equals(AccountTypeStatic.TRADING.getCode()) && generalLedger.getAmount() != null) {
 reconAmount += generalLedger.getAmount().longValue();
 return AeSystemUtils.returnReconciliation(SystemCodeUtils.SUCCESS, moduleName, new Double(reconAmount).longValue() + "", null, stanley);
 } else if(request.getReconType().equals(REVENUE_RECON_TYPE)) {
 RevenueRecon revenueRecon = revenueReconFacadeLocal.findGreaterThanDateToAndSplitRevenue(request.getToDate(), false);
 if(revenueRecon != null) {
 LogUtil.error("AEException", "Recon already occured for a greater date", "" + newRequestId);
 return AeSystemUtils.returnResponse(SystemCodeUtils.AE_INVALID_INFORMATION, null, null, null, stanley);
 } else {
 //Find all values smaller than toDate
 double reconFeeAmount = 0;
 double reconCommissionAmount = 0;
 Date toDateUtil = DateUtils.getDateFromString(request.getToDate());
 Date fromDate = null;
 List <RevenueRecon> revenueReconList = revenueReconFacadeLocal.findBySplitFee(false);
 if(revenueReconList != null && revenueReconList.size() > 0) {
 fromDate = ((RevenueRecon) revenueReconList.get(0)).getReconToTs();
 Calendar tempCal = Calendar.getInstance();
 tempCal.setTimeInMillis(fromDate.getTime());
 tempCal.add(Calendar.MILLISECOND, 1);
 fromDate = tempCal.getTime();
 Long debitFeeAmount = generalLedgerFacadeLocal.findBetweenToAndFromDateForDebitFeeAccount(fromDate, toDateUtil);
 Long creditFeeAmount = generalLedgerFacadeLocal.findBetweenToAndFromDateForCreditFeeAccount(fromDate, toDateUtil);
 reconFeeAmount = (creditFeeAmount-debitFeeAmount);
 Long debitCommissionAmount = generalLedgerFacadeLocal.findBetweenToAndFromDateForDebitCommissionAccount(fromDate, toDateUtil);
 Long creditCommissionAmount = generalLedgerFacadeLocal.findBetweenToAndFromDateForCreditCommissionAccount(fromDate, toDateUtil);
 reconCommissionAmount = (creditCommissionAmount-debitCommissionAmount);
 reconFeeAmount = reconFeeAmount - reconCommissionAmount;
 return AeSystemUtils.returnReconciliation(SystemCodeUtils.SUCCESS, moduleName, new Double(reconFeeAmount).longValue() + "", null, stanley);
 } else if(request.getReconType().equals(SPLIT_REVENUE_RECON_TYPE)) {
 return AeSystemUtils.returnResponse(SystemCodeUtils.AE_INVALID_XML_REQUEST, null, null, null, stanley);
 }

How to call one EJB in another EJB?

How to call one EJB in another EJB? Please explain with some example code.

To refer a Ejb from another Ejb include <ejb-ref> element in ejb-jar.xml
<session>
<ejb-name>EjbA</ejb-name>
<ejb-ref>
<ejb-ref-name>EjbB</ejb-ref-name>
<ejb-ref-type>Entity</ejb-ref-type>
<home>com.ejb.EjbBHome</home>
<remote>com.ejb.EjbB</remote>
</ejb-ref>
</session>
Include a <reference-descriptor> in weblogic-ejb-jar.xml
<weblogic-enterprise-bean>
<ejb-name>EjbA</ejb-name>
<reference-descriptor>
<ejb-reference-description>
<ejb-ref-name>EjbB</ejb-ref-name>
<jndi-name>com.ejb.EjbBHome</jndi-name>
</ejb-reference-description>
</reference-descriptor>
</weblogic-enterprise-bean>
In EjbA Bean class refer to EjbB with
a remote reference to EjbB.
InitialContext initialContext=new InitialContext();
EjbBHome EjbBHome=(EjbBHome)
initialContext.lookup("com.ejb.EjbBHome");
EjbB ejbB=EjbBHome.findByPrimaryKey(primarykey);

Can I call an EJB from the database?

Hi,
I've just spent the last few days attempting to call an EJB from a stored procedure in a 10g database (and still haven't succeeded).
Now having spent hours searching the web (and this forum) for any successful examples (so far I have found none) I thought I'd add a message to see if there is anybody out there who has done this successfully. If so can you please provide me some details on how to do this?
Alternatively, I'd appreciate any input on how I can overcome my current hurdle in attempting to do this myself.
Here's how far I've got in my attempt:
I have a simple stateless session bean deployed to both Oracle 10gAS (a standalone OC4J container in 10.1.3) and to Weblogic 9. I have a client java class that calls a method on this bean and displays some ouput if successful. This all works from a standalone JVM (version 1.4) on both Weblogic and 10gAS.
I then tried to load the required libraries for Weblogic onto the database (namely the Weblogic.jar file). This resulted in the addition of some 32,000 odd objects of which 30,000 odd could not be resolved. I figured a lot of these may be down to JVM version issues (I believe that Weblogic 9 uses the 1.5 JRE) so I decided to put the Weblogic test on the back burner for now and just use the Oracle app server.
The tests with the Oracle app server looked promising. I only needed a handful of libraries to be loaded onto the database and all the relevant classes required for my test client had resolved (including the initial context factory required to do the jndi lookup of the bean). After granting all the permissions I believed I needed I'd got to the point where I could do a jndi lookup of the EJB; but when I tried to create an instance of the beans remote interface I got the following error:
java.security.AccessControlException: the Permission (java.lang.RuntimePermission getClassLoader) has not been granted to ProtectionDomain (file:generated/by/proxy <no certificates>)
com.evermind.net.DynamicClassLoader@612d9d34
<no principals>
java.security.Permissions@eb0f3c1a (
(java.util.PropertyPermission java.version read)
(java.util.PropertyPermission java.vm.name read)
(java.util.PropertyPermission java.vm.vendor read)
(java.util.PropertyPermission os.name read)
(java.util.PropertyPermission java.vendor.url read)
(java.util.PropertyPermission java.vm.specification.vendor read)
(java.util.PropertyPermission java.specification.vendor read)
(java.util.PropertyPermission os.version read)
(java.util.PropertyPermission java.specification.name read)
(java.util.PropertyPermission java.class.version read)
(java.util.PropertyPermission file.separator read)
(java.util.PropertyPermission java.vm.version read)
(java.util.PropertyPermission os.arch read)
(java.util.PropertyPermission java.vm.specification.name read)
(java.util.PropertyPermission java.vm.specification.version read)
(java.util.PropertyPermission java.specification.version read)
(java.util.PropertyPermission java.vendor read)
(java.util.PropertyPermission path.separator read)
(java.util.PropertyPermission line.separator read)
(java.net.SocketPermission localhost:1024- listen,resolve)
 at java.security.AccessControlContext.checkPermission(AccessControlContext.java:280)
 at java.security.AccessController.checkPermission(AccessController.java:429)
 at java.lang.SecurityManager.checkPermission(SecurityManager.java:528)
 at oracle.aurora.rdbms.SecurityManagerImpl.checkPermission(SecurityManagerImpl.java:192)
 at java.lang.Thread.getContextClassLoader(Thread.java:1203)
 at com.evermind.server.rmi.RMICall.<init>(RMICall.java:36)
 at com.evermind.server.rmi.RmiCallQueue.createCall(RmiCallQueue.java:33)
 at com.evermind.server.rmi.RMIClientConnection.createQueuedCall(RMIClientConnection.java:592)
 at com.evermind.server.rmi.RMIClientConnection.writeRequest(RMIClientConnection.java:581)
 at com.evermind.server.rmi.RMIClientConnection.sendMethodInvocationRequest(RMIClientConnection.java:426)
 at com.evermind.server.rmi.RMIClientConnection.invokeMethod(RMIClientConnection.java:415)
 at com.evermind.server.rmi.RemoteInvocationHandler.invoke(RemoteInvocationHandler.java:63)
 at com.evermind.server.rmi.RecoverableRemoteInvocationHandler.invoke(RecoverableRemoteInvocationHandler.java:28)
 at __Proxy0.create(Unknown Source)
 at com.axiomsystems.test.client.TestDBClient.test(TestDBClient.java:76)
Has anybody come across this before? If so can they help?
If not has anybody out there actually managed to call an EJB method (without going via an RMI server/Servlet/or any other proxy).
Any help in this matter would be greatfully appreciated.
Cheers,
Anand.

Sure, here's the code. It's what JDev generates automatically but I have seperated some things into several diffrent lines so I could experiment easier.
final Context context = getInitialContext();
Object o=context.lookup( "SessionEJB4" );
Object l= PortableRemoteObject.narrow( o, SessionEJB4Home.class );
final SessionEJB4Home sessionEJB4Home = (SessionEJB4Home)l;
SessionEJB4 sessionEJB4 = sessionEJB4Home.create();
String ret=( sessionEJB4.hello( ) );
As I mentioned, for this I have used EJB2.1 bean, because I had same problems with EJB3.0, so I tried earlier versions of Java to make sure that is not the problem.
hello() method just returns string "hello".
Of course, this works in standalone client that is not loaded into database.
Now, I loaded all the jars mentioned in this thread, using loadjava options -v -resolve, and I loaded client using options -v -resolve -genmissing . Select query on user objects in database shows that client class and relevant classes are all valid.
Then I created stub and ran it. First it stopped throwing exception ORA-29532: Java call terminated by uncought Java exception: Java.lang.NoClassDefFoundError.
Method I try to run returns String value which is hello message if it works fine, else it prints the part of the stack trace. In this case, after p[revious error, When I try to run it again, i get return from the method :
Lookup error: java.lang.NoClassDefFoundError; nested exception is:
 java.lang.NoClassDefFoundError
com.evermind.server.rmi.RMICall.throwRecordedException(RMICall.java:89)
com.evermind.server.rmi.RMIClientConnection.waitForJndiResponse(RMIClientConnection.java:371)
com.evermind.server.rmi.RMIClientConnection.lookup(RMIClientConnection.java:179)
com.evermind.server.rmi.RMIClient.lookup(RMIClient.java:283)
com.evermind.server.rmi.RMIClientContext.lookup(RMIClientContext.java:51)
javax.naming.InitialContext.lookup(InitialContext.java:347)
simpleejbproject.EJB4Client.hello(EJB4Client.java:35)
Of course, regular version of the client I run frokm command line works fine.
So I'm kind of a stuck here. I followed all directions, tried it on oracle 9 and oracle 10 DB, the problems remain the same. Am I missing something here?
Thanks
Just to add, getInitialContext()
 private static Context getInitialContext() throws NamingException {
 Hashtable env = new Hashtable();
 // Oracle Application Server 10g connection details
 env.put( Context.INITIAL_CONTEXT_FACTORY, "oracle.j2ee.rmi.RMIInitialContextFactory" );
 env.put( Context.SECURITY_PRINCIPAL, "oc4jadmin" );
 env.put( Context.SECURITY_CREDENTIALS, "manager1" );
 env.put(Context.PROVIDER_URL, "opmn:ormi://mserv:4005:home/TestEjb4");
 return new InitialContext( env );
It goes withouth any exceptions.
Message was edited by:
user510152

How to call oracle function from ejb3

i'm trying to call an oracle query-function from ejb3.
The oracle function:
create or replace FUNCTION getSecThreadCount(secId in NUMBER,avai in NUMBER)
RETURN SYS_REFCURSOR is cur SYS_REFCURSOR;
m_sql VARCHAR2(250);
BEGIN
m_sql:='select count(thrId) from thread where secId='|| secid||'
and thrAvai='|| avai;
open cur for m_sql;
return cur;
END;
I'v tried several ways to call it,but all failed:
1. the calling code:
public Object getSectionThreadCount(int secId,int avai){
 Query query=manager.createNativeQuery("{call getSecThreadCount(?,?) }");
 query.setParameter(1, secId);
 query.setParameter(2, avai);
 return query.getSingleResult();
but i got the exception:
Exception in thread "main" javax.ejb.EJBException: javax.persistence.PersistenceException: org.hibernate.exception.SQLGrammarException: could not execute query; nested exception is: javax.persistence.PersistenceException: org.hibernate.exception.SQLGrammarException: could not execute query
javax.persistence.PersistenceException: org.hibernate.exception.SQLGrammarException: could not execute query
Caused by: java.sql.SQLException: ORA-06550: row 1, col 7:
PLS-00221: 'GETSECTHREADCOUNT' not procedure or not defined
ORA-06550: row 1, col 7:
PL/SQL: Statement ignored
2. the calling code:
@SqlResultSetMapping(name = "getSecThreadCount_Mapping")
@NamedNativeQuery(name = "getSecThreadCount",
query = "{?=call getSecThreadCount(:secId,:avai)}",
resultSetMapping = "getSecThreadCount_Mapping",
hints = {@QueryHint(name = "org.hibernate.callable", value = "true"),
 @QueryHint(name = "org.hibernate.readOnly", value = "true")})
public Object getSectionThreadCount(int secId,int avai){
 Query query=manager.createNamedQuery("getSecThreadCount");
 query.setParameter("secId", secId);
 query.setParameter("avai", avai);
 return query.getSingleResult();
but i run into the exception:
Exception in thread "main" javax.ejb.EJBException: javax.persistence.PersistenceException: org.hibernate.exception.SQLGrammarException: could not execute query; nested exception is: javax.persistence.PersistenceException: org.hibernate.exception.SQLGrammarException: could not execute query
javax.persistence.PersistenceException: org.hibernate.exception.SQLGrammarException: could not execute query
Caused by: java.sql.SQLException: lost in index IN or OUT parameter:: 3
By the way, i have successfully called the function from hibernate. And i use oracle 11g, JBoss5 RC1.
Could anyone tell me how to call the function from EJB3?
Thanks.

Here's a working model:
package.procedure: (created in example schema scott)
CREATE OR REPLACE package body data_pkg as
type c_refcursor is ref cursor;
-- function that return all emps of a certain dept
function getEmployees ( p_deptId in number
return c_refcursor
is
 l_refcursor c_refcursor;
begin
 open l_refcursor
 for
 select e.empno as emp_id
 , e.ename as emp_name
 , e.job as emp_job
 , e.hiredate as emp_hiredate
 from emp e
 where e.DEPTNO = p_deptId;
 return l_refcursor;
end getEmployees;
end data_pkg;
/entity class:
package net.app.entity;
import java.io.Serializable;
import java.util.Date;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.NamedNativeQuery;
import javax.persistence.QueryHint;
import javax.persistence.SequenceGenerator;
import javax.persistence.Table;
@SuppressWarnings("serial")
@Entity
@Table (name="emp")
@SequenceGenerator(name = "EmployeeSequence", sequenceName = "emp_seq")
@NamedNativeQuery( name = "getEmpsByDeptId"
 , query = "{ ? = call data_pkg.getEmployees(?)}"
 , resultClass = Employee.class
 , hints = { @QueryHint(name = "org.hibernate.callable", value = "true")
 , @QueryHint(name = "org.hibernate.readOnly", value = "true")
public class Employee implements Serializable
 @Id
 @Column(name="emp_id")
 @GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "EmployeeSequence")
 private int id;
 @Column(name="emp_name")
 private String name;
 @Column(name="emp_job")
 private String job;
 @Column(name="emp_hiredate")
 private Date hiredate;
 // constructor
 public Employee (){}
 // getters and setters
 public int getId()
 return id;
etc...session bean:
package net.app.entity;
import java.util.ArrayList;
import java.util.List;
import javax.ejb.Stateless;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import javax.persistence.Query;
import net.app.entity.Employee;
import net.app.iface.ScottAdmin;
@Stateless
public class ScottAdminImpl implements ScottAdmin
 @PersistenceContext
 private EntityManager entityManager;
 @SuppressWarnings("unchecked")
 public List<Employee> getEmployeesByDeptId(int deptId)
 ArrayList<Employee> empList;
 try
 Query query = entityManager.createNamedQuery("getEmpsByDeptId");
 query.setParameter(1, deptId);
 empList = (ArrayList<Employee>) query.getResultList();
 return empList;
 catch (Exception e)
 e.printStackTrace(System.out);
 return null;
}client:
package net.app.client;
import java.util.List;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import net.app.entity.Employee;
import net.app.iface.ScottAdmin;
public class ScottClient
 public static void main(String[] args)
 try
 // create local interface
 InitialContext ctx = new InitialContext();
 ScottAdmin adminInterface = (ScottAdmin) ctx.lookup("ScottAdminImpl/remote");
 // select employees by deptno
 int deptno = 20;
 List<Employee> empList = adminInterface.getEmployeesByDeptId(deptno);
 // output
 System.out.println("Listing employees:");
 for (Employee emp : empList)
 System.out.println(emp.getId() + ": " + emp.getName() + ", " + emp.getJob() + ", " + emp.getHiredate());
 catch (NamingException e)
 e.printStackTrace(System.out);
}Basically you just ignore the refcursor outbound parameter.
This is a stored function, have yet to try outbound refcursor parameters in stored procedures...
Edited by: _Locutus on Apr 2, 2009 2:37 PM

Canu00B4t call an EJB from other EJB

Hi developers,
I need do the next task :
I have a EJB in an EAR and i need call some functionality from other EJB in diferent EAR , when execute the code show the next message error:
java.rmi.RemoteException: com.sap.engine.services.ejb.exceptions.BaseRemoteException: Exception in method generaMDMOutput.
 at com.sapconsulting.customer.inc.CustomerIncObjectImpl0.generaMDMOutput(CustomerIncObjectImpl0.java:135)
 at com.sapconsulting.customer.inc.CustomerIncObjectImpl0p4_Skel.dispatch(CustomerIncObjectImpl0p4_Skel.java:127)
 at com.sap.engine.services.rmi_p4.DispatchImpl._runInternal(DispatchImpl.java(Compiled Code))
 at com.sap.engine.services.rmi_p4.DispatchImpl._run(DispatchImpl.java(Inlined Compiled Code))
 at com.sap.engine.services.rmi_p4.server.P4SessionProcessor.request(P4SessionProcessor.java(Compiled Code))
 at com.sap.engine.core.service630.context.cluster.session.ApplicationSessionMessageListener.process(ApplicationSessionMessageListener.java(Compiled Code))
 at com.sap.engine.core.cluster.impl6.session.MessageRunner.run(MessageRunner.java(Compiled Code))
 at com.sap.engine.core.thread.impl3.ActionObject.run(ActionObject.java(Compiled Code))
 at java.security.AccessController.doPrivileged1(Native Method)
 at java.security.AccessController.doPrivileged(AccessController.java(Compiled Code))
 at com.sap.engine.core.thread.impl3.SingleThread.execute(SingleThread.java(Compiled Code))
 at com.sap.engine.core.thread.impl3.SingleThread.run(SingleThread.java(Compiled Code))
Caused by: java.lang.ClassCastException: com.sap.engine.interfaces.cross.ObjectReferenceImpl
 at com.sapconsulting.customer.inc.CustomerIncBean.generaMDMOutput(CustomerIncBean.java:141)
 at com.sapconsulting.customer.inc.CustomerIncObjectImpl0.generaMDMOutput(CustomerIncObjectImpl0.java:119)
 ... 11 more
the code to invoke the EJB is the next:
ctx = new InitialContext();
TestEJBLocalHome home = (TestEJBLocalHome) ctx.lookup("sap.com/TestEJB_ear/TestEJBBean");
 TestEJB servicio=(TestEJB)home.create();
the EJB are in the same server , please help,
regards

Hi Siarhei,
thank's for your answers , i'll explain the scenario , i think i copied wrong the code that i have ,
i have two EAR's applications , i want to call one EJB from the other EJB in other EAR , the call have to be remote , my code is the next :
ctx = new InitialContext();
Object obj = ctx.lookup("sap.com/TestEJB_ear/TestEJBBean");
TestEJBHome home = (TestEJBHome) PortableRemoteObject.narrow(obj,TestEJBHome.class);
TestEJB servicio= home.create();
i've confugured the ejb-xml.jar adding
<ejb-ref>
<ejb-ref-name>ejb/TestEJBBean</ejb-ref-name>
<ejb-ref-type>Session</ejb-ref-type>
<home>com.innovativesystems.onl.TestEJBHome</home>
<remote>com.innovativesystems.onl.TestEJB</remote>
</ejb-ref>
I've configured the ejb-j2ee-jar.xml adding
<ejb-ref>
<ejb-ref-name>ejb/TestEJBBean</ejb-ref-name>
<jndi-name>sap.com/TestEJB_ear/TestEJBBean</jndi-name>
</ejb-ref>
I've configured the application-j2ee-engine.xml adding a hard reference
<reference
reference-type="hard">
<reference-target
provider-name="sap.com"
target-type="application">TestEJB_ear</reference-target>
</reference>
with all this configuration still send me the message java.lang.classcast ,
something is missing???? ,
regards

Calling an EJB from jsp - ServletException

I am unable to call an EJB from jsp, unless I put the actuall classes of
 the EJB into the classpath. Is this the right way to do it?
 The exception is:
 Servlet failed with ServletException
 javax.servlet.ServletException: Servlet class: 'jsp_servlet._result'
 could not be loaded - the requested class wasn't found in the
 classpath:
 '/local/apps/bea/wlserver6.0/config/gmodomain/applications/.wl_temp_do_not_delete/wl_local_comp34107.war:/local/apps/bea/wlserver6.0/./config/gmodomain/applications/.wl_temp_do_not_delete/WEB-INF/_tmp_war_gmo_gmo_webwar:/local/apps/bea/wlserver6.0/config/gmodomain/applications/.wl_temp_do_not_delete/WEB-INF/_tmp_war_gmo_gmo_webwar'
 at
 weblogic.servlet.internal.ServletStubImpl.prepareServlet(ServletStubImpl.java:532)
 at weblogic.servlet.jsp.JspStub.prepareServlet(JspStub.java:191)
 at weblogic.servlet.jsp.JspStub.prepareServlet(JspStub.java:148)
 at
 weblogic.servlet.internal.ServletStubImpl.getServlet(ServletStubImpl.java:306)
 at
 weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:208)
 at
 weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:246)
 at
 weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServletContext.java:1265)
 at
 weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl.java:1622)
 at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:137)
 at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:120)
 where result.jsp is the jsp page calling the EJB. I did an import of the
 EJB classes in the jsp.
 like i said, it works if I put the bean classes in the classpath. But is
 it right?
 if I have these in the exploded format, do I need to put anything in the
 application web.xml under:
 wlserver6.0/config/gmodomain/applications/DefaultWebApp_gmo/WEB-INF ?
 redhat 6.2, wl6.0sp1
 here are the xml files:
 web.xml:
 <?xml version="1.0"?>
 <!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application
 2.2//EN" "http://java.sun.com/j2ee/dtds/web-app_2_2.dtd">
 
 <web-app>
 <display-name>My Web Application</display-name>
 <description>none</description>
 <ejb-ref>
 <ejb-ref-name>MyWeb</ejb-ref-name>
 <ejb-ref-type>Session</ejb-ref-type>
 <home>com.blah.ejb.myweb.WyWebHome</home>
 <remote>com.blah.ejb.myweb.MyWeb</remote>
 </ejb-ref>
 </web-app>
 weblogic.xml:
 <!DOCTYPE weblogic-web-app PUBLIC "-//BEA Systems, Inc.//DTD Web
 Application 6.0//EN"
 "http://www.bea.com/servers/wls600/dtd/weblogic-web-jar.dtd">
 <weblogic-web-app>
 <jsp-descriptor>
 <jsp-param>
 <param-name>
 pageCheckSeconds
 </param-name>
 <param-value>
 1
 </param-value>
 </jsp-param>
 <jsp-param>
 <param-name>
 verbose
 </param-name>
 <param-value>
 true
 </param-value>
 </jsp-param>
 <jsp-param>
 <param-name>compileCommand</param-name>
 <param-value>/local/apps/jdk1.3.0_02/bin/javac</param-value>
 </jsp-param>
 </jsp-descriptor>
 <reference-descriptor>
 <ejb-reference-description>
 <ejb-ref-name>MyWeb</ejb-ref-name>
 <jndi-name>MyWeb</jndi-name>
 </ejb-reference-description>
 </reference-descriptor>
 </weblogic-web-app>
 thanks,
 Gary


Did you package your JSPs in a WAR and your EJBs in a JAR and package the
 WAR and JAR in an EAR? That is how to do it in 6.0. Works well.
 Peace,
 Cameron Purdy
 Tangosol, Inc.
 http://www.tangosol.com
 +1.617.623.5782
 WebLogic Consulting Available
 "gmo" <[email protected]> wrote in message
 news:[email protected]...
 > I am unable to call an EJB from jsp, unless I put the actuall classes of
 > the EJB into the classpath. Is this the right way to do it?
 > The exception is:
 > Servlet failed with ServletException
 > javax.servlet.ServletException: Servlet class: 'jsp_servlet._result'
 > could not be loaded - the requested class wasn't found in the
 > classpath:
 >
 '/local/apps/bea/wlserver6.0/config/gmodomain/applications/.wl_temp_do_not_d
 elete/wl_local_comp34107.war:/local/apps/bea/wlserver6.0/./config/gmodomain/
 applications/.wl_temp_do_not_delete/WEB-INF/_tmp_war_gmo_gmo_webwar:/local/a
 pps/bea/wlserver6.0/config/gmodomain/applications/.wl_temp_do_not_delete/WEB
 -INF/_tmp_war_gmo_gmo_webwar'
 >
 > at
 >
 weblogic.servlet.internal.ServletStubImpl.prepareServlet(ServletStubImpl.jav
 a:532)
 >
 > at weblogic.servlet.jsp.JspStub.prepareServlet(JspStub.java:191)
 >
 > at weblogic.servlet.jsp.JspStub.prepareServlet(JspStub.java:148)
 >
 > at
 >
 weblogic.servlet.internal.ServletStubImpl.getServlet(ServletStubImpl.java:30
 6)
 >
 > at
 >
 weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java
 :208)
 >
 > at
 >
 weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java
 :246)
 >
 > at
 >
 weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServletCo
 ntext.java:1265)
 >
 > at
 >
 weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl.java
 :1622)
 >
 > at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:137)
 >
 > at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:120)
 >
 > where result.jsp is the jsp page calling the EJB. I did an import of the
 > EJB classes in the jsp.
 > like i said, it works if I put the bean classes in the classpath. But is
 > it right?
 > if I have these in the exploded format, do I need to put anything in the
 > application web.xml under:
 > wlserver6.0/config/gmodomain/applications/DefaultWebApp_gmo/WEB-INF ?
 >
 > redhat 6.2, wl6.0sp1
 >
 > here are the xml files:
 > web.xml:
 >
 > <?xml version="1.0"?>
 > <!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application
 > 2.2//EN" "http://java.sun.com/j2ee/dtds/web-app_2_2.dtd">
 >
 > 
 >
 > <web-app>
 > <display-name>My Web Application</display-name>
 > <description>none</description>
 > <ejb-ref>
 > <ejb-ref-name>MyWeb</ejb-ref-name>
 > <ejb-ref-type>Session</ejb-ref-type>
 > <home>com.blah.ejb.myweb.WyWebHome</home>
 > <remote>com.blah.ejb.myweb.MyWeb</remote>
 > </ejb-ref>
 > </web-app>
 >
 > weblogic.xml:
 >
 > <!DOCTYPE weblogic-web-app PUBLIC "-//BEA Systems, Inc.//DTD Web
 > Application 6.0//EN"
 > "http://www.bea.com/servers/wls600/dtd/weblogic-web-jar.dtd">
 > <weblogic-web-app>
 > <jsp-descriptor>
 > <jsp-param>
 > <param-name>
 > pageCheckSeconds
 > </param-name>
 > <param-value>
 > 1
 > </param-value>
 > </jsp-param>
 > <jsp-param>
 > <param-name>
 > verbose
 > </param-name>
 > <param-value>
 > true
 > </param-value>
 > </jsp-param>
 > <jsp-param>
 > <param-name>compileCommand</param-name>
 > <param-value>/local/apps/jdk1.3.0_02/bin/javac</param-value>
 > </jsp-param>
 > </jsp-descriptor>
 > <reference-descriptor>
 > <ejb-reference-description>
 > <ejb-ref-name>MyWeb</ejb-ref-name>
 > <jndi-name>MyWeb</jndi-name>
 > </ejb-reference-description>
 > </reference-descriptor>
 > </weblogic-web-app>
 >
 > thanks,
 >
 > Gary
 >
 >

How to Acces an EJB from a portal

I have a problem. I can't access EJB's from the portal.
I downloaded the tutorial "How to Access an EJB from a Portal component". The result was the following error
Can someone tell my how to access EJB's from a portal component. It is not needed to do this all in one EAR.
One PAR and a other EAR is also fine.
I use the WAS 6.4 SP9
Starting Deployment of MyEJBPackage
Aborted: development component 'MyEJBPackage'/'sap.com'/'localhost'/'2005.01.28.09.32.48':
Caught exception during application deployment from SAP J2EE Engine's deploy service:
com.sap.engine.services.rmi_p4.MarshalException: Exception when trying to read the original exception.; nested exception is: java.lang.ClassNotFoundException: com.sapportals.portal.prt.runtime.PortalException
(message ID: com.sap.sdm.serverext.servertype.inqmy.extern.EngineApplOnlineDeployerImpl.performAction(DeploymentActionTypes).REMEXC)
Deployment of MyEJBPackage finished with Error (Duration 612133 ms)

See Accesss an EJB from a portal component

How to call the RFC from R/3 to SRM, when we use webdynpro abap? (Urgent)

Hello
We use SRM Server 5.5 with classic scenario.
We want to call RFC in R/3 from webdynpro ABAP.
How can we do that?
We are developing the web report using webdynpro abap.
So we need some of R/3 data such like PR(EBAN)and PO(EKKO,EKPO).
When user choose the search parameter, report diplay the Shopping cart, PR and PO data on webdynpro. So we call the R/3 RFC to display the PR, PO data.
But I tired to call the RFC in R/3, We could not call it.
How to call the RFC from R/3 to SRM, when we use webdynpro abap?
Thank you,
Best Regards,
SH.

Hi
Please look at the following threads as well ->
WebDynpro in SRM
BAPI's /RFC's in SRM
BAPI to Change Shopping Cart by RFC
SRM60 and webdynpro
Webdynpro Services Exception
WebDynpro using BAPI has an error
SRM60 and webdynpro...
SAP uses META Function modules in SRM to get data from R/3 back-end.
For getting Purchase requistion data, use the function modules ->
META_REQUISITION_CHANGE Change purchase requisition
META_REQUISITION_CREATE Create Requisition
META_REQUISITION_DELETE Delete/close purchase requisition
META_REQUISITION_GETDETAIL Display requisition details
META_REQUISITION_GETITEMS Display requisition items
META_REQUISITION_GETRELINFO Get Releasease Info for requisitions
For getting Purchase order data, use the function modules ->
META_PO_CREATE Create purchase order
META_PO_DELETE Delete reservation
META_PO_GETDETAIL Display purchase order details
META_PO_GETITEMS Display purchase order items
META_PO_GETRELINFO Display purchase order release information
Hope this will definitely help. Do let me know.
Regards
- Atul

How to call a "iView" in Portal Service

Hi,
I want to call a "iView" from portal service.
Can somebody suggest me how to call? I am not aware of the method for doing so.
Any sample code will be helpful.
Thanks in advance.
Manish

Hello Manish,
as far as I know, it's not possible to call an iView from a portal service. The intention of a portal service is to provide general functionality that may be used by several iViews. So, you can call a service from an iView, but not the other way round.
Have a look at the documentation, I hope this clarifies things a little bit: http://help.sap.com/saphelp_erp2005vp/helpdata/en/df/e6b74253ffda11e10000000a155106/frameset.htm
Kind regards, Lars

How to call Java API from BSP?

I have a requirement to call Java API from BSP application.
I have checked the forum and found that it is possible by using some ABAP codes.
However there is no pointer on how this is done.
Can someone explain the details on how to call Java API from BSP is done?
I found class CL_EJB_JAVA_OBJECT_METHODS to call a method in EJB but can't find function or SAP class to call Java API.
Actually is there any BSP extention which can used to call Java API?
Thanks,
Hendri

check out these weblogs, it should give you an idea how to go about it.
/people/ignacio.hernndez/blog/2006/12/04/speech-synthesis-listen-the-application-server-is-talking-to-you
/people/puru.govind/blog/2006/12/20/let-abap-speak
Regards
Raja

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