Tomcat 7 and Oracle 11g

Question

Hello Everyone,
I am facing a strange issue with tomcat 7 connectivity with Oracle 11g. I am using the below versions
JDK1.7.0_03
Tomcat 7
Oracle 11g
I used to connect to oracle9 with the thin driver, everything was fine, but when I try to connect to 11g, tomcat throws the error CONNECTION REFUSED. I created a seperate standalone java application to test the connection with the same peice of code, and I can see Oracle sends the connection, but with Tomcat 7 it throws the error. I have placed all the correct jar files in the tomcat lib directory and classpath. I am little lost as it works well as an individual application but not from Tomcat. No exception or other error is thrown by Tomcat
Can anyone help me on this
Thanks in advance

Answer 1

926901,
I am havnig what I think is a very similar issue. I am brand new to java and to configuring any kind of server at all. I am using the versions below:
JDK 1.7.0_04 - on my local machine
JRE 7 - on my local machine
Tomcat 7 - installed on my local machine
Oracle 11g - on a different server on my company's network
I created a login page using scriptlets in a jps file and could connect using the following, but it is not on a tomcat server (on my company's development box):
String dbURL = "jdbc:oracle:thin:@10.5.20.101:1521:myDB";
String dbUser = "*****";
String dbPass = "*****";
DriverManager.registerDriver(new oracle.jdbc.driver.OracleDriver());
con = DriverManager.getConnection(dbURL,dbUser,dbPass);
I am now trying to do the same login, connecting to the same DB (same url/UN/PW) using servlets from the tomcat server on my machine. I am writing the code in Eclipse also, and have pointed eclipse to the JDK and JRE folders. You mentioned that you have placed all the correct jar files in tomcat lib directory. Would you please tell me what jar files you used? I am finding a lot of people saying I need to put the oracle driver into the WEB-INF/lib folder directly in the specific web app, and some say it is fine in the tomcat lib folder, and I am seriously frustrated with it. I am not sure if I should be using the class12.jar file or the ojbdc14.jar file either. Please, any advice you can give me would be appreciated. I have been going in circles for days and nothing seems to let me connect to the DB from a servlet running in Eclipse on tomcat. The code I am trying to use on tomcat in the servlet is:
import java.sql.*;
import java.util.*;
import oracle.jdbc.*;
public class ConnectionManager
     static Connection con;
     static String dbURL;
     public static Connection getConnection()
          try
               String dbURL = "jdbc:oracle:thin:@//10.5.20.101:1521:myDB";
               String dbUser = "*****";
               String dbPass = "*****";
               // assuming "DataSource" is your DataSource name
               Class.forName("oracle.jdbc.OracleDriver");
               DriverManager.registerDriver(new oracle.jdbc.OracleDriver());
               //try
                    con = DriverManager.getConnection(dbURL,dbUser,dbPass);
               //catch (SQLException ex)
               //     ex.printStackTrace();
          catch(ClassNotFoundException e)
               System.out.println(e);
          return con;
}