not update database in php with ajax

Index.php

<link href="css/validationEngine.jquery.css" rel="stylesheet" type="text/css" />

<script language="JavaScript" src="js/jquery-1.8.2.min.js" type="text/javascript"></script>

<script language="JavaScript" src="js/jquery.validationEngine-en.js" type="text/javascript"></script>

<script language="JavaScript" src="js/jquery.validationEngine.js" type="text/javascript"></script>

<script>
        jQuery(document).ready(function(){

            jQuery("#formID").validationEngine();

        });
</script>

<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.5/jquery.min.js"></script>
<script type="text/javascript" src="js/jquery.form.js"></script>
<script type="text/javascript">
$(document).ready(function() 
{ 
    $('#photoimg').live('change', function()    
    { 
        $("#preview").html('');
        $("#preview").html('<img src="loader.gif" alt="Uploading1...."/>');

        $("#imageform").ajaxForm(
        {
        target: '#preview'
        }).submit();
    });
}); 
</script>
<style>
.preview { float: left;
    width: 57px;}

</style>

<link href="css/style.css" rel="stylesheet" type="text/css" />

<div class="form-container form-main-bg" style="margin-top:40px;">


<form id="imageform" name="imageform" method="post" enctype="multipart/form-data" action="ajax_upload_profile_image.php">
Upload image <input type="file" name="photoimg" id="photoimg" />
</form>

<div id='preview'>
</div>


    <form id="formID" name="formID" method="post" action="edit_profile.php">
        <input type="hidden" name="hid_id" id="hid_id" value="<?php echo $_SESSION['UserId']; ?>" />
            <div class="row">
            <div class="left">About</div>
            <div class="right">
            <textarea id="about" name="about" id="about"><?php echo $u_data[0]->vCode; ?></textarea>
            </div>
<div class="row">
            <div class="left">Location</div>
               <textarea id="location" name="location"><?php echo $u_data[0]->vCode; ?></textarea>            </div>

<div class="row">
            <div class="left">Gender</div>
            Male <input type="radio" name="gender" id="gender" value="male" />
            Female <input type="radio" name="gender" id="gender" value="female" />
            <div class="clear"></div>
            </div>

 <!- Other rows here -->
<div  style="text-align:center; margin-top:20px;">
<input name="submit" id="submit" type="submit" class="submit-btn" value="Update" />
</div>
</form>
</div>

ajax_upload_profile_image.php

<?php
    session_start();
    $session_id= $_SESSION['UserId'];

    require_once('includes/config.inc.php');
    if(isset($_POST) and $_SERVER['REQUEST_METHOD'] == "POST")
    {
        $path = "images/profile/";

        $valid_formats = array("jpg", "png", "gif", "bmp","jpeg");

        $name = $_FILES['photoimg']['name'];
        $size = $_FILES['photoimg']['size'];
        if(strlen($name))
        {
            list($txt, $ext) = explode(".", $name);
            if(in_array($ext,$valid_formats))
            {
                if($size<(1024*1024)) // Image size max 1 MB
                {
                    $actual_image_name = time().$session_id.".".$ext;
                    $tmp = $_FILES['photoimg']['tmp_name'];
                    if(move_uploaded_file($tmp, $path.$actual_image_name))
                    {
                        $query=("UPDATE users SET image='$actual_image_name' WHERE user_id='$session_id'");
                        $result = mysql_query($query) or die();
                        if($result)
                        {
                            echo "success"; 
                        }
                        else
                        {
                            echo "fail";
                        }

                        echo "<img src='images/profile/".$actual_image_name."' class='preview'>";
                    }
                    else
                        echo "failed";
                }
                else
                    echo "Image file size max 1 MB"; 
            }
            else
                echo "Invalid file format.."; 
        }
        else
            echo "Please select image..!";
        exit;
    }
?>

The following code is not working. Database is updated when sending data directly to php script using form action but when sent to php script through AJAX function the database is not updated but I receive success message.