Access database vs Tomcat 1.4.2.9

Question

Good afternoon
I'm currently at my practical training and i'm trying te access a MS Access database with a Servlet. I've already done that in the past and there weren't any issues, so it should be a piece of cake.
Unfortunately, i think there's an issue with Tomcat. When i access the database from the servlet, i always get a "General Error", with no explanation. It seems he can't find the data source or the driver. I already configured a System and User DSN for the database, so this should work.
I also wrote a testapplication, to test my database-class and when i write something to that database, it really updates the database.
I have to use that specific version of tomcat, i'm afraid upgrading Tomcat is not an option.
Here's my code:
Open connection:
     /** Openen van de connectie naar de databank */
     private void openDatabank()
          try{
               Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
               con = DriverManager.getConnection("jdbc:odbc:Viewer");
        catch(SQLException e){ System.out.println("SQLExcep " + e.getMessage()); e.printStackTrace(); }
        catch(ClassNotFoundException cnf){ System.out.println("CNF: " + cnf.getMessage()); cnf.printStackTrace(); }
     }Insert information into the database
     public void voerNonQueryUit(String sql)
          openDatabank();
         try{
              Statement stmt = con.createStatement();
              stmt.execute(sql);
              sluitDatabank();
         }catch(Exception e){ e.printStackTrace(); }
     }Call the insert method:
     /** Kijkt of databank al is aangemaakt */
     private void maakDatabank()
          if(db == null)
               db = new Databank();
     /** Sessieid die behoort aan gebruiker wegschrijven in databank */
     public void schrijfSessieIDWeg(GenerateID generateid)
          maakDatabank();
          sql = "INSERT INTO Sessie(SessieID) VALUES ('" + generateid.getId() + "')";
          db.voerNonQueryUit(sql);
     }

Answer 1

I'd look at two things:
(1) Your PATH environment variable should have JAVA_HOME/bin as its very first entry, where JAVA_HOME is the directory where you've installed the JDK.
(2) If the first thing doesn't fix it, there's probably a registry setting that points to the JRE. On my machine, it's under LOCAL_MACHINE/SOFTWARE/Java Soft. See what's in there and make it use the ones you want.
MOD