SQL Exception after upgraded to Tomcat 5

Question

I used to develop JSP in SunOne Studio 4 Update 1, which comes with Tomcat 4.0
My database is Microsoft Access Database. My JDK is 1.4.2
My JSP applications work in SunONE studio's Tomcat environment.
However, I tried to run the application in Tomcat 5.0 without SunONE studio. It is not working for all the pages related with Database connection.
The error says: "java.sql.SQLException: [Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified"
But it DO works using the same code under SunONE's environment.
Following is my connection.
String url = application.getInitParameter("dBURL");
String username = application.getInitParameter("dBUserName");
String password = application.getInitParameter("dBUserPassword");
Connection conn = null;
String classPath = "sun.jdbc.odbc.JdbcOdbcDriver";
try {
    Class.forName(classPath);
    conn = DriverManager.getConnection(url,username,password);
} catch (Exception exc){
    out.println(exc.toString());
Statement stm = conn.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE,ResultSet.CONCUR_READ_ONLY);
String query;
ResultSet rst=null;I have tested using out.println(application.getInitParameter("dBURL")); that the parameters are retrieved successfully.
conn = DriverManager.getConnection(url,username,password); is actually the place where the error occurs.
Any body knows about this error?

Answer 1

This sounds like it might answer your question... probably SunONE does some of this for you, that you might have to do manually without it.
http://java.sun.com/webservices/docs/1.1/tutorial/doc/Admintool5.html