connect database 2 ตัวพร้อมกันแต่ตัวหนึ่ง error ครับ

<?php
session_start();

$con = mssql_connect("ITMED04-PC","sa","1234") or die("Error Connect to Database");
$db = mssql_select_db("kpi",$con);
header('Content-Type: text/html; charset=tis-620');

$datein = date("Y-m-d");
$timein = date("H:i:s");
$_SESSION["name"]="webtest";
$userin=$_SESSION["name"];
?>

<?php
session_start();

$con2 = mssql_connect("ITMED04-PC","sa","1234") or die("Error Connect to Database");
$db2 = mssql_select_db("infomed_db",$con2);
header('Content-Type: text/html; charset=tis-620');

?>

<?php
require("../inc/connect.php");
require("../inc/connectinfomed.php");

//301
$sqlgobal="select count(gb_id) as gb_id from tbgobalresearch ";
$querygobal = mssql_query($sqlgobal,$con);
$resultgobal = mssql_fetch_array($querygobal);

echo $resultgobal["gb_id"];

//302
/*$sqlpublish="select * from kpi.tbpublish ";
$querypublish=mssql_query($sqlpublish);
$resultpublish = mssql_fetch_array($querypublish);*/

//303
//$sql;

//305
$sqlinter="select count(name) as name from task_action_book where journal_level='2' ";
$queryinter=mssql_query($sqlinter,$con2);
$resultinter = mssql_fetch_array($queryinter);

echo $resultinter["name"];
?>