PROBLEMA: Não é possível iniciar uma ligação clonada enquanto em modo de transacções manual

import java.sql.*;
import java.io.*;


public class Repro{

	public static void main(String args[])
	{
		try {
			Connection con;
			Statement s1 = null;
			ResultSet r1 = null;
			Statement s2 = null;
			ResultSet r2 = null;
			Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver"); 
			con = DriverManager.getConnection(
				"jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=pubs;SelectMethod=Direct;User=User;Password=Password");
			//fix 1
				//"jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=pubs;SelectMethod=Cursor;User=User;Password=Password");
			con.setAutoCommit(false);
			
			try {
				s1 = con.createStatement();
				r1 = s1.executeQuery("SELECT * FROM authors");
				
				//fix 2
				//r1.close();
				//s1.close();

				s2 = con.createStatement();
				r2 = s2.executeQuery("SELECT * FROM publishers");
			}
			catch (SQLException ex)
			{
				System.out.println(ex);				
			}
		
		}
		catch (Exception e)
		{
			e.printStackTrace();
		}
	}
}