UserTransaction lookup from servlet

Question

Hi all,
I want to get the UserTransaction in my Servlet using JNDI lookup.
How do I get the UserTransaction?? I am unable to lookup the UserTransaction.
My servlet is the part of same application.
My code will look like this...
     UserTransaction userTransaction
               = (javax.transaction.UserTransaction)ic.lookup(txName);
     userTransaction.begin();
          some data base operations
          put message in JMS Queue
     userTransaction.commit()/rollback();
When I tried to get the Transaction as under...
InitialContext ic = new InitialContext();
String txName = "java:comp/UserTransaction";
UserTransaction tx = (javax.transaction.UserTransaction)ic.lookup(txName);
It gave me the following error..
javax.naming.NamingException: com.evermind.server.ApplicationInitialContextFactory should only be used inside Orion server environments.
For client com.evermind.server.ApplicationClientInitialContextFactory or com.evermind.server.rmi.RMIInitialContextFactory should be used
     at com.evermind.server.PreemptiveApplicationContext.getContext(PreemptiveApplicationContext.java:26)
     at com.evermind.naming.FilterContext.lookup(FilterContext.java:127)
     at com.evermind.server.PreemptiveApplicationContext.lookup(PreemptiveApplicationContext.java:48)
     at javax.naming.InitialContext.lookup(InitialContext.java:347)
When I tried to pass the properties and get the UserTransaction as under
Hashtable env = new Hashtable();
env.put(Context.INITIAL_CONTEXT_FACTORY, "com.evermind.server.rmi.RMIInitialContextFactory");
env.put(Context.PROVIDER_URL, "ormi://localhost:23791/SENTHIL");
env.put(Context.SECURITY_PRINCIPAL, "admin");
env.put(Context.SECURITY_CREDENTIALS, "welcome");
env.put("dedicated.connection","true");
InitialContext ic = new InitialContext(env);
String txName = "java:comp/UserTransaction";
UserTransaction tx
= (javax.transaction.UserTransaction)ic.lookup(txName);
It gave me the following error.
javax.naming.NameNotFoundException: java:comp/UserTransaction not found
     at com.evermind.server.rmi.RMIContext.lookup(RMIContext.java:103)
     at javax.naming.InitialContext.lookup(InitialContext.java:347)
When I tried with "com.evermind.server.ApplicationClientInitialContextFactory"
It gave me the following error.
javax.naming.NamingException: META-INF/application-client.xml not found (see J2EE spec, application-client chapter for requirements and format of the file)
     at com.evermind.server.ApplicationClientInitialContextFactory.getRequiredClasspathResource(ApplicationClientInitialContextFactory.java:188)
     at com.evermind.server.ApplicationClientInitialContextFactory.getInitialContext(ApplicationClientInitialContextFactory.java:69)
     at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:662)
     at javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:243)
     at javax.naming.InitialContext.init(InitialContext.java:219)
     at javax.naming.InitialContext.<init>(InitialContext.java:195)
Can any one tell me where I am going wrong?
http://otn.oracle.com/tech/java/oc4j/904/collateral/oc4j-faq-ejb-904.html#transaction
The document in the above url says...
You cannot perform a client-demarcated transaction (begin .. method ... commit) if the client is not in the same OC4J instance. If the client is running in a
different Java virtual machine, then OC4J doesn't support client demarcated transactions. If you use a servlet and demarcate a client transaction, then the
corresponding EJB must exist in the same OC4J application.
Thanks in advance,
Senthil

Answer 1

How do you create IntitialContext in the servlet? I would suggest you try
          Context ctx = new InitialContext();
          --- Igor Zavialov
          "mesha" <[email protected]> wrote in message
          news:3a538120$[email protected]..
          >
          > Hi,
          >
          > I am lookingup a bean deployed on wls 5.1 from both client and a servlet.
          I am able lookup the bean (JNDI Name) from the client code and after getting
          the remote with create method able to execute the buisness method.
          >
          > However, when same code is used from the servlet, i am unable to
          > lookup the bean . It doesnot throw any exceptions/error .
          >
          > I am unable to get SOP(System out println) after the
          > context.lookup(JNDIName);
          > and the cursor starts blinking on the console.
          >
          > Will anybody can give the reason for that.
          >
          > mesha
          >
          >
          >