使用ASP Classic登录的多个活动会话

Question

我在ASP Classic中有一个简单的登录脚本。

登录成功后，会为要识别的用户创建会话变量。

但是，当一个用户已登录时，另一个用户无法登录。他们将收到一条错误消息＆＃34;您必须使用可更新的查询。＆＃34;

我应该为每次登录创建唯一的会话cookie吗？我不太确定......非常感谢一些指导。

HTML：

    <form method="post" action="" name="login_form" class="login_form">
      <div class="login-wrap">
        <h1>login</h1>
        <p><%=error%>
        <p><input type="text" name="login_user" id="login_user" placeholder="user"></p>
        <p><input type="password" name="login_pass" id="login_pass" placeholder="password"></p>
        <p><input type="submit" value="Login" class="btn"></p>
      </div>
      <p>&nbsp;</p>
    </form>

ASP：

// Process login 
if request.form("login_user") <> "" then
   user = Request.Form("login_user")
   password = Request.Form("login_pass")

   set conn=Server.CreateObject("ADODB.Connection")
   conn.Open "PROVIDER=Microsoft.Jet.OLEDB.4.0;Jet OLEDB:Database Password=******;User ID=Admin;" & _
   "DATA SOURCE=" & Server.MapPath("contacts.mdb")
   set rs = Server.CreateObject("ADODB.Recordset")
   sql = "SELECT * FROM contacts WHERE user=" & user
   rs.open sql, conn

   if rs.EOF then
      error = "Sorry, your user was not found."
   end if

   if Request.Form("login_user") = "" then
      error = "You must enter your user number."
   elseif Request.Form("login_pass") = "" then
      error = "You must enter your password."
   elseif rs("pass") <> "" then
      if password = rs("pass") then
         session("id") = rs("area")
         session("user") = rs("user")
         Response.Redirect("admin.asp")
      else
         error = "Invalid password."
      end if
   else
      error = "Please enter a password."
   end if

   rs.Close
   conn.Close
   set rs = nothing
   set conn = nothing 
end if