请问高手关于jdbc连接sql server问题
import   java.sql.*;
public   class   SQL_JDBC{
public   static   void   main(String[]   args){
Connection   conn;
String   driver= "com.microsoft.jdbc.sqlserver.SQLServerDriver ";
String   url= "jdbc:microsoft:sqlserver://127.0.0.1:1433;DatabaseName=pubs ";
String   user= "sa ";
String   pwd= " ";
try{
Class.forName(driver);
conn=DriverManager.getConnection(url,user,pwd);
Statement   stmt=conn.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE,ResultSet.CONCUR_UPDATABLE);

String   sql= "select   *   from   jobs ";
ResultSet   rs=stmt.executeQuery(sql);
while(rs.next()){
System.out.print( " "+rs.getInt(1));
System.out.println( "\t "+rs.getString(2));
}
stmt.close();
conn.close();
System.out.println( "\n "+ "Test   ok! ");

}catch(ClassNotFoundException   e){
System.out.println( "未找到要加载的驱动类 ");
}catch(SQLException   e){
System.out.println( "SQL错误提示： "+e);


}
}
}
运行时显示：[Microsoft][SQL   server200   Driver   for   JDBC]Error   establishing   socket
请问如何解决

------解决方案--------------------
Error establishing socket

很明显是端口问题，程序并没有错
可能性比较大的还是补丁问题，SQL SERVER 2000要SP3以上的补丁