JNDI and Java Thread

[kokababu]

Hi

I am developing a WebService using Java (JAX-RPC).
According to the requirement, I have to create a Thread to
insert data into Database.

So I am opening a database connection in the following way:
Note: I am using runnable interface and I am calling the getCon() from run method.

public Connection getCon(){
    	 ctx = new javax.naming.InitialContext();
    	 ds = (javax.sql.DataSource) ctx.lookup("java:comp/env/JNDINAME"); //JNDI NAME: jdbc/Sample
    	 con = ds.getConnection();
    	 con.setAutoCommit(true);

        return con;
}

But I am getting the following error message:
" javax.naming.Na meNotFoundExcep tion:
Name comp/env/jdbc not found in context "java:"."

From this point of view, my child thread is failing to open DB connection.

Is there way to open database connection using a child thread in web container like WebSphere?

[N002213F]

try checking out this; http://java.sun.com/products/jndi/tutorial/TOC.html

There are some examples to go with it.