Problems creating session ejbs in a startup class

Question

public class startupTest implements T3StartupDef
     private T3ServicesDef services;
     public startupTest()
     public String startup(String name, Hashtable args) throws Exception
     try{
          Context initialContext = getContext("t3://localhost:7001");
     DruckAuftragHome dah =     (DruckAuftragHome)initialContext.lookup(
"DruckAuftrag" );
          javax.ejb.EJBObject o = dah.create();
          DruckAuftrag da = (DruckAuftrag) o;
          System.out.println("EEEEEEEEEEEEEEEEEEEEEEEE"+da.makePDF());
          catch(Exception e)
               e.printStackTrace();
          return "";
private static Context getContext(String wlUrl)
throws javax.naming.NamingException
Hashtable env = new Hashtable();
env.put(Context.PROVIDER_URL, wlUrl);
env.put(Context.INITIAL_CONTEXT_FACTORY,
weblogic.jndi.WLInitialContextFactory.class.getName());
Context ctx = new InitialContext(env);
return ctx;
     public void setServices(T3ServicesDef services)
          this.services = services;
Calling the Bean Method works form Servlets and form standalone Clients, but at
startup
java.lang.NullPointerException
at weblogic.utils.io.UnsyncByteArrayInputStream.<init>(UnsyncByteArrayInputStream.java:57)
at weblogic.rmi.internal.ServerRequest.getInputStream(ServerRequest.java:91)
at weblogic.rmi.internal.ServerRequest.sendReceive(ServerRequest.java:87)
at com.bmw.tais.appserver.ipa.produkt.druckauftrag.DruckAuftragBeanHomeImpl_WLStub.create(DruckAuftragBeanHomeIm
pl_WLStub.java:151)
at com.bmw.tais.helper.startupTest.startup(C:/ipa_wa/IPA/com/bmw/tais/helper/startupTest.java:49)
at weblogic.t3.srvr.StartupThread.runStartup(StartupThread.java:182)
at weblogic.t3.srvr.StartupThread.doWork(StartupThread.java:146)
at weblogic.t3.srvr.PropertyExecuteThread.run(PropertyExecuteThread.java:62)
if i call the bean in a tread over and over again the first exception is a nullpointer
(shown above) and then i get a ClassCastException calling
the create Methode on the DruckAuftragBeanHomeImpl_WLStub.create(DruckAuftragBeanHomeIm
pl_WLStub.java:151)
any ideas?
thanks
regars robert

Answer 1

Hi Robert,
You need to let the server to warm up before
starting using it's services. Check weblogic doc's
for samples.
Regards,
Slava Imeshev
"robert neumaier" <[email protected]> wrote in message
news:[email protected]...
>
public class startupTest implements T3StartupDef
private T3ServicesDef services;
public startupTest()
public String startup(String name, Hashtable args) throws Exception
try{
Context initialContext = getContext("t3://localhost:7001");
DruckAuftragHome dah =(DruckAuftragHome)initialContext.lookup(
"DruckAuftrag" );
javax.ejb.EJBObject o = dah.create();
DruckAuftrag da = (DruckAuftrag) o;
System.out.println("EEEEEEEEEEEEEEEEEEEEEEEE"+da.makePDF());
catch(Exception e)
e.printStackTrace();
return "";
private static Context getContext(String wlUrl)
throws javax.naming.NamingException
Hashtable env = new Hashtable();
env.put(Context.PROVIDER_URL, wlUrl);
env.put(Context.INITIAL_CONTEXT_FACTORY,
weblogic.jndi.WLInitialContextFactory.class.getName());
Context ctx = new InitialContext(env);
return ctx;
public void setServices(T3ServicesDef services)
this.services = services;
Calling the Bean Method works form Servlets and form standalone Clients,but at
startup
java.lang.NullPointerException
atweblogic.utils.io.UnsyncByteArrayInputStream.<init>(UnsyncByteArrayInputStre
am.java:57)
atweblogic.rmi.internal.ServerRequest.getInputStream(ServerRequest.java:91)
atweblogic.rmi.internal.ServerRequest.sendReceive(ServerRequest.java:87)
atcom.bmw.tais.appserver.ipa.produkt.druckauftrag.DruckAuftragBeanHomeImpl_WLS
tub.create(DruckAuftragBeanHomeIm
pl_WLStub.java:151)
atcom.bmw.tais.helper.startupTest.startup(C:/ipa_wa/IPA/com/bmw/tais/helper/st
artupTest.java:49)
atweblogic.t3.srvr.StartupThread.runStartup(StartupThread.java:182)
at weblogic.t3.srvr.StartupThread.doWork(StartupThread.java:146)
atweblogic.t3.srvr.PropertyExecuteThread.run(PropertyExecuteThread.java:62)
>
if i call the bean in a tread over and over again the first exception is anullpointer
(shown above) and then i get a ClassCastException calling
the create Methode on theDruckAuftragBeanHomeImpl_WLStub.create(DruckAuftragBeanHomeIm
pl_WLStub.java:151)
any ideas?
thanks
regars robert