Exception is thrown "mydb is not bound"(needs urgent help)

We r three students and our final project is a BPM(Business peocess Management)system.
BPM is actually a workflow system(managing the business processes)and all the rules and constraints are applied from the Rule Management System.
we have started the implementation, and therefore we need some help related to the implementation.
We r using EJB2.0 with JBuilder9, JBoss3.2 as the application server and tomcate as the web server.
problem:
I want to create manual database connection using DataSource,
I am using mysql and database name is mydb.
I have done all the reqiured configration of mysql with Joss and it is working.
After getting the initial context, when i try to lookup the datasource, exception is thrown "mydb is not bound"
Initial context is correct because i have tried entity beans asd it works well.
code is
Hashtable contextValues = new Hashtable();
contextValues.put(Context.PROVIDER_URL, "jnp://loopback:1099");
contextValues.put(Context.INITIAL_CONTEXT_FACTORY,
"org.jnp.interfaces.NamingContextFactory");
Context context = new InitialContext(contextValues);
context.lookup("java://mydb");
Kindly help me if u find time,
regards!

try java:comp/env/jdbc/mydb or java:comp/env/mydb

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"Errored while looking up datasource: PWC4216: Name myDB is not bound in th

hi all,
am trying to deploy my web application (.war which has a servlet which connects to a db and fetches records and displays in jsp) file in SunOne web server V7 but i cant get past this error :
[29/Jun/2010:15:14:46] failure (24218): for host 146.171.59.144 trying to POST /BbaMigrationQueryTool/BBAMigrationQuery, service-j2ee reports: NamingExcep
tion caught: Errored while looking up datasource: PWC4216: Name myDB is not bound in this Context
my java code to lookup the jndi name :
   1.     //looks up a datasource
   2.     private static synchronized DataSource getDataSource(String jndiName) throws NamingException {
   3.
   4.         DataSource dataSource = null;
   5.
   6.         try {
   7.             Context c = new InitialContext();
   8.              Context envContext = (Context) c.lookup("java:comp/env");
   9.             Logger.getLogger(DBUtilities.class.getName()).log(Level.INFO, "Found sub context");
10.               dataSource = (DataSource) envContext.lookup(jndiName);
11.
12.         } catch (NamingException e) {
13.             e.printStackTrace();
14.             throw new NamingException("Errored while looking up datasource: " + e.getMessage());
15.         }
16.
17.         return dataSource;
18.     }
i call the above method with "jdbc/myDB" and have created a JDBC recourse within the SunOne web server via the admin console.
my web.xml i have an entry for the resource as follows :
   1.             <resource-ref>
   2.         <res-ref-name>jdbc/myDB</res-ref-name>
   3.         <res-type>javax.sql.DataSource</res-type>
   4.         <res-auth>Container</res-auth>
   5.         <res-sharing-scope>Shareable</res-sharing-scope>
   6.     </resource-ref>
in my sun-web.xml i have an entry as follows :
   1.     <resource-ref>
   2.         <res-ref-name>jdbc/myDB</res-ref-name>
   3.         <jndi-name>jdbc/myDB</jndi-name>
   4.     </resource-ref>
server.xml has this entry in it :
   1.   <jdbc-resource>
   2.     <jndi-name>jdbc/myDB</jndi-name>
   3.     <datasource-class>oracle.jdbc.pool.OracleDataSource</datasource-class>
   4.     <property>
   5.       <name>password</name>
   6.       <value>76765</value>
   7.     </property>
   8.     <property>
   9.       <name>user</name>
10.       <value>56756</value>
11.     </property>
12.     <property>
13.       <name>url</name>
14.       <value>jdbc:oracle:thin:@serveretc etc</value>
15.     </property>
16.     <description/>
17.   </jdbc-resource>
what could be wrong ??
thanks in advance.
Edited by: cesarNZ on Jun 29, 2010 7:58 PM
Edited by: cesarNZ on Jun 29, 2010 8:00 PM

try to not split the attributes in server.xml
use them like
<Context path="/myPath" docBase="myDocBase" debug="5" reloadable="true" crossContext="true" source="org.eclipse.jst.j2ee.server:myDocBase">
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