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FIX: When You Store an ActiveX Data Objects Recordset Object Session in Internet Information Server 5.0

This article was previously published under Q262681
This article has been archived. It is offered "as is" and will no longer be updated.
When an ActiveX Data Objects (ADO) recordset is stored in a session variable that is in an Active Server Pages (ASP) application, you may get one of the following error messages:
Microsoft VBScript runtime (0x800A01FB)
An exception occurred: 'Session'
Active Server Pages, ASP 0241 (0x80004005)
The CreateObject of '(null)' caused exception C0000005.
Microsoft VBScript runtime (0x800A01FB)
An exception occurred: 'Open'
This problem occurs because the session variables in Internet Information Server (IIS) 5.0 are stored in the Global Interface Table (GIT), and this causes an access violation with an open recordset when it is stored in a session variable.
Microsoft has confirmed that this is a bug in the Microsoft products that are listed at the beginning of this article.

This bug was corrected in Microsoft Data Access Components version 2.6 or later.

Steps to Reproduce the Behavior

To reproduce the behavior, perform the following steps:
  1. Create an ASP page on IIS 5.0 with the following code:
    <%   Dim oConn, oRs	   Set oConn = Server.CreateObject("ADODB.Connection")   Set oRs = Server.CreateObject("ADODB.Recordset") 		   oConn.Open "Provider=SQLOLEDB.1;Data Source=<ServerName>;User Id=sa;Initial Catalog=Northwind"   Set oRs.ActiveConnection = oConn   oRs.CursorLocation = 3	   oRs.Open "SELECT * FROM Employees"   Set oRs.ActiveConnection = Nothing      oConn.Close   Set oConn = Nothing   'Bug occurs if ADO Recordset is stored in Session variable after opening   Set Session("session_recordset") = oRs   Do While Not oRs.EOF      Response.Write oRs("LastName") & "<BR>"      oRs.MoveNext    Loop   oRs.Close   Set oRs = Nothing     		%>					
  2. Browse the ASP page you created, and then refresh the ASP page. One of the error messages is displayed after you refresh the ASP page.
For additional information, click the article numbers below to view the articles in the Microsoft Knowledge Base:
249175 FIX: Storing an ADO Recordset in GIT Might Cause An Access Violation
248287 INFO: Understanding ADO Marshaling

Article ID: 262681 - Last Review: 02/28/2014 00:32:42 - Revision: 3.1

Microsoft Active Server Pages 4.0, Microsoft ActiveX Data Objects 2.5, Microsoft Internet Information Services 5.0

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