Javax.servlet.ServletException: Connection reset by peer....Help needed..

Question

Initially, when I clicked on my JSPs, everything was fine. I was able to retrieve data successfully from all the JSPs. However, after much clicking through the JSPs. I was not able to access the JSPs and the Internal Servlet Error was shown.
Below is my Tomcat.log:
Context log: path="/Aedge" Error in jsp service() : Connection reset by peer: socket write error
javax.servlet.ServletException: Connection reset by peer: socket write error
     at org.apache.jasper.runtime.JspServlet.service(JspServlet.java:375)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
     at org.apache.tomcat.core.ServletWrapper.handleRequest(ServletWrapper.java:503)
     at org.apache.tomcat.core.RequestDispatcherImpl.forward(RequestDispatcherImpl.java:163)
     at org.apache.tomcat.servlets.DefaultServlet.doGet(DefaultServlet.java:187)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
     at org.apache.tomcat.core.ServletWrapper.handleRequest(ServletWrapper.java:503)
     at org.apache.tomcat.core.ContextManager.service(ContextManager.java:559)
     at org.apache.tomcat.service.http.HttpConnectionHandler.processConnection(HttpConnectionHandler.java:160)
     at org.apache.tomcat.service.TcpConnectionThread.run(SimpleTcpEndpoint.java:338)
     at java.lang.Thread.run(Unknown Source)
Context log: path="/Aedge" <b>Internal Servlet Error:</b><br>.....
What is the problem here? How can I solve this as I had to restart my Tomcat once a while due to this problem.

Answer 1

ok.. I have db classes where all my sql statements methods are being displayed.. In each db class, there will be a getInstance() method to create the connection. Below is one of my db class.. How to I modified the things you had mentioned in my codes..
package aedgeSoft.access;
import aedgeSoft.business.*;
import java.sql.*;
import java.util.*;
import java.util.Date;
import java.io.*;
public class DBMemberType
     private Connection con;
     private static DBMemberType instance = null;
     public static DBMemberType getInstance()
          try
               if(instance==null)
                    instance = new DBMemberType();
          catch(SQLException e)
               System.out.println("Problems with loading database in DBMemberType");
          catch(ClassNotFoundException e)
               System.out.println("Problems with loading db driver in DBMemberType");
          finally
               return instance;
     private DBMemberType() throws SQLException, ClassNotFoundException
          try{
          Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver").newInstance();
          con = DriverManager.getConnection("jdbc:microsoft:sqlserver://localhost:1433;user=username;password=password;DatabaseName=db");
          catch(InstantiationException e)
               e.printStackTrace();
          catch(IllegalAccessException e)
               e.printStackTrace();
     //add memberType
     public boolean addMemberType(MemberType mt)
..........