Why it takes long time to establish Database Connection ???

Question

Can any one please have a look on the following code snippet and show me which mistake I'm doing so it take long time to connect to DB(more than 5 minutes !!!!)
Thanx in advance ...
try{
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
Class.forName("oracle.jdbc.driver.OracleDriver");
String dbString2 = "jdbc:oracle:thin:@" + "127.0.0.1" + ":" + "1521" + ":" + "nat";
aCon = DriverManager.getConnection(dbString2, "scott", "tiger");
stmt = aCon.createStatement();
System.out.println("Connection to DB Established");
catch (ClassNotFoundException cnfe)
System.out.println("Class not found:");
cnfe.printStackTrace();
catch (SQLException sqle)
System.out.println("SQL Exception: " + sqle.toString());
sqle.printStackTrace();

Answer 1

Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
Why do you need this if you are going to Oracle. Try
removing this. It might be trying things out with the
old driver and then moving to the new driver. This has nothing to do with it. (And it doesn't "try things out")
>
Also check your machines. They might be slow. There is
no reason, it should take more than few hundred
milliseconds to connect to a database on localhost as
your case is.Possible reasons...
- Network traffic
- Faulty router/gateway
- Busy server
- Faulty network card (either end)
- Conflict with another box