I m not getting connected to oracle 9i database using my ejb...

Question

hi i have made a simple ejb which simply connects to a database of oracle 9i using a datasource on oracle 10g application server...but now my problem is that when i am trying to deploy the ejb ..it is not getting deployed...it shows the following error..
Deployment failed:nested exception
resolution:
base exception:
com.evermind.server.rmi.OrionRemoteException
Disconnected:Connection reset. Disconnected:Connection reset.
the code i am using for EJB class is as follows
package Simpapp;
import javax.ejb.*;
import java.sql.*;
import javax.naming.*;
import javax.sql.DataSource;
public class SimpappBean implements SessionBean {
    static final String DATASOURCE = "bajaj";
    static final String SQL = "select * from login ";
    DataSource ds;
    public String upper (String input) throws java.rmi.RemoteException {
     try {
         Connection conn = ds.getConnection ("bajaj10g","bajaj10g");
         Statement sql = conn.createStatement ();
         //sql.setString (1, input);
         ResultSet results = sql.executeQuery (SQL);
         if (results.next () == false) {
          System.out.println ("No rows for "+ input);
              throw new java.rmi.RemoteException ("SQL failure");
         } // if
         String result = results.getString ("username");
         results.close ();
         sql.close ();
         conn.close ();
         if (result == null) {
          System.out.println ("NULL result for "+ input);
              throw new java.rmi.RemoteException ("SQL failure");
         } else
          return (result);
     } catch (SQLException sqle) {
         System.err.println ("While executing SQL: " +
          sqle.getMessage ());
         throw new java.rmi.RemoteException ("SQL failure");
        } catch (Exception e) {
         System.err.println ("Unknown Exception: " +
          e.getMessage ());
         throw new java.rmi.RemoteException ("Bean Exception: " +
          e.getMessage ());
     } // catch
    } // simpapp
    public void ejbCreate () {
         try {
         Context ctx = new InitialContext ();
         ds = (DataSource) ctx.lookup (DATASOURCE);
     } catch (Exception e) {
         System.out.println ("While creating Bean " +
          e.getMessage ());
     } // catch
    } // ejbCreate
    public void ejbRemove () {}
    public void ejbActivate () {}
    public void ejbPassivate () {}
    public void setSessionContext (SessionContext ctx) {}
} // SimpappBeancan any body suggest me where lies the problem???
all my Home ,Remote classes are doing well when they are used for any other simple helloworld type of program

Answer 1

Is that the only Oracle client installed? If you have another one hanging around it could be using the wrong tnsnames file.