Sun App Sever 8.1 / JNDI - datasource lookup problems

Question

I get an error when calling the ctx.lookup function. I have the datasource and the resource set up in the server OK. I can ping successfully and view the table data. I am using NetBeans 4.1 / Sun 8.1
I have been up all night (11pm - 4:30am) trying to figure this out.
    <%
        java.sql.Connection conn = null;
        java.util.Hashtable env = new java.util.Hashtable();
        javax.naming.Context ctx ;
        javax.sql.DataSource cachedDataSource;
        try {
        env.put(javax.naming.Context.INITIAL_CONTEXT_FACTORY,  "com.sun.jndi.cosnaming.CNCtxFactory");
        ctx = new javax.naming.InitialContext();
        cachedDataSource  = (javax.sql.DataSource)ctx.lookup("jdbc/mysql"); 
        if (cachedDataSource == null)
            {out.println("<h2>The datasource is not getting set properly</h2>");
            conn = cachedDataSource.getConnection();}
        else
        { out.println("<h2>the datasource is not null and seems like it gets initialized.<h2>"); }
        } catch (javax.naming.NamingException ne) {}
          catch (java.sql.SQLException se) {}
        env = null;
        ctx = null;
        conn.close();
        conn = null;
        cachedDataSource = null;
    %>

Answer 1

RTFM
http://docs.sun.com/app/docs/doc/819-0079
The resource lookup in the application code looks like this:
InitialContext ic = new InitialContext();
String dsName = "java:comp/env/jdbc/HelloDbDs";
DataSource ds = (javax.sql.DataSource)ic.lookup(dsName);
Connection connection = ds.getConnection();
The resource being queried is listed in the res-ref-name element of the web.xml file as follows:
<resource-ref>
<description>DataSource Reference</description>
<res-ref-name>jdbc/HelloDbDs</res-ref-name>
<res-type>javax.sql.DataSource</res-type>
<res-auth>Container</res-auth>
</resource-ref>
The resource-ref section in a Sun Java System specific deployment descriptor, for example sun-web.xml, maps the res-ref-name (the name being queried in the application code) to the JNDI name of the JDBC resource. The JNDI name is the same as the name of the JDBC resource as defined in the resource file when the resource is created.
<resource-ref>
<res-ref-name>jdbc/HelloDbDs</res-ref-name>
<jndi-name>jdbc/HelloDbDataSource</jndi-name>