FIX: An access violation may occur when a program calls the UpdateBatch method of an ADO Recordset object by using the OLE DB Provider for ODBC in Data Access Components

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SYMPTOMS

You may receive an access violation under rare conditions when the following are true:

Your program calls the UpdateBatch method of an ActiveX Data Objects (ADO) Recordset object.
The connection that the Recordset object uses is made by using the Microsoft OLE DB Provider for ODBC drivers in Microsoft Data Access Components (MDAC).

You may see a call stack that is similar to the following if you capture the access violation exception with a debugger or in a dump file:

msdasql!CUpdateQueryBased::ClusterRows+0x142
msdasql!CUpdateQueryBased::Update+0x181
msdasql!CImpIRowsetUpdate::Update+0x44c
msadrh15!CRowsetHelper::Update+0x5d
msado15!CRecordset::_UpdateBatch+0x21b
msado15!CRecordset::UpdateBatch+0x8e
<your program function calls>

This problem does not occur in other OLE DB providers.

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RESOLUTION

Service pack information

To resolve this problem, obtain the latest service pack for Microsoft Data Access Components 2.8. This service pack is currently included with Microsoft Windows XP SP2. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

884103 (http://support.microsoft.com/kb/884103/ ) How to obtain the latest MDAC 2.8 service pack

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Hotfix information

A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, submit a request to Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support (http://support.microsoft.com/contactus/?ws=support)

Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.

The English version of this fix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in coordinated universal time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.

   Date         Time   Version            Size    File name
   --------------------------------------------------------------
   27-Oct-2004  14:11  2.80.1054.0       303,104  Msdasql.dll

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STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

This problem was first corrected in Microsoft Data Access Components 2.8 Service Pack 1.

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