FIX: Hotfixes are available for MDAC 2.8

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Microsoft now distributes Microsoft Data Access Components (MDAC) 2.8 hotfixes as a single update file.

Because these hotfixes are cumulative, each new release contains all the hotfixes and all the security fixes that were included with the previous MDAC 2.8 fix release. You do not have to install a previous software update before you install the latest one.

This article contains a list of all the hotfixes that are available for MDAC 2.8.


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:
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.


Before you install this update, you must have MDAC 2.8 installed on your computer.

To determine the version of MDAC that you are running, view the following registry key:
Note After you install the cumulative hotfix, the FullInstallVer subkey will change to represent the cumulative build number value of 2.80.nnnn.xx, where nnnn is the build number of this hotfix. By comparing the build number of any other MDAC 2.80 hotfix, you can determine whether the build is a later build that includes additional fixes or if it is an earlier build that will not install. For more information about how to determine your version of MDAC, click the following article number to view the article in the Microsoft Knowledge Base:
301202 How to check for MDAC version

Hotfix update information

The following hotfixes have been released for MDAC 2.8. The following hotfixes are found in packages with a
subkey value of 2.80.1054 or a later version:
823109 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
887576 FIX: You may receive an access violation in your application when you bind too many parameters to an ODBC statement handle and then you clean up the statement handle
896108 FIX: You notice a small memory leak when a direct or indirect call to the WrapDSOandSession method of ADO Connection object is made and the MSDataShape provider is not used in MDAC 2.8
Note This hotfix is packaged with new installer technology. This new installer technology provides many benefits, including Uninstall. However, you should test this new installer technology before you apply it to servers in production.

The following fix is found in packages with a FullInstallVer subkey value of 2.80.1048.0 and later:
322968 FIX: CColumnsInfo reference count leak in MSDAORA REF CURSOR when you retrieve data from an Oracle function
The following fixes are found in packages with a FullInstallVer subkey value of 2.80.1045.0 and later:
832483 MS04-003: Buffer overrun in an MDAC function could allow code execution
292648 FIX: Bcp.exe ignores -R regional settings switch when using format file (-f)
328514 FIX: Binding an output parameter of an Oracle stored procedure to adBSTR results in an incorrect value
329964 FIX: Microsoft SQL Server ODBC driver cannot retrieve output parameters of a remote stored procedure on a linked server
330019 FIX: SQLXML that includes MDAC 2.7 returns GUID fields without "{}" characters
817518 Passing ADODB::Field object to ADO Command.CreateParameter method causes a memory leak
822841 FIX: Setting of connection attribute fails when you use connection pooling for the SQL Server ODBC connection
826770 FIX: Incorrect native SQL error information when you use SQLXML to retrieve data
827452 FIX: General network error when you try to back up or restore a SQL Server database on a computer that is running Windows Server 2003
830497 Floating point exception in Msadrh15!CRowsetHelper::ProcessAccessor
831715 Catastrophic failure" error message when you use the "SQL Server Login" dialog box to set the database name
836830 FIX: Query performance declines when you use the SET FMTONLY Hint in the Microsoft ODBC Driver for SQL Server and the Microsoft OLE DB Provider for SQL Server
837311 FIX: You cannot import data from a text file that is greater than 32 MB by using the BCP utility
838405 FIX: "Argument passed to data shaping service was invalid" error after you apply MDAC 2.8
838768 FIX: Accessibility error occurs when you configure a UDL file on a computer that is running a 64-bit operating system
838976 FIX: SQLOLEDB stops responding when the sqlxmlx.dll file unloads unexpectedly
831832 Oracle ODBC driver returns SQL_DECIMAL for all convert function calls
834905 FIX: You receive an "ORA-01012" error message when you connect to an Oracle database by using MSDAORA
815701 FIX: Memory leak may occur in Microsoft OLE DB Provider for Oracle when you use the REF CURSOR data type and the LONG data type
835677 FIX: You may receive the "Cannot insert or update columns from multiple tables" error message when you try to insert or to update data in a multi-table view by using a server-side cursor
843248 FIX: You receive a "Cannot generate SSPI context" error message when you try to connect to a SQL Server 2000 SP3 server computer
887576 FIX: You may receive an access violation in your application when you bind too many parameters to an ODBC statement handle and then you clean up the statement handle
890470 FIX: A deadlock condition may occur when you call the SQLFetch function or the SQLFetchScroll function in MDAC 2.8
890759 FIX: You may receive the "Server: Msg 7399, Level 16, State 1, Line 1" error message when you run a query against a remote view through a linked server in SQL Server 2000

File information

The English version of this hotfix 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
   10-Dec-2004  16:09  2000.85.1057.0     73,728  Dbnetlib.dll     
   10-Dec-2004  16:10  2000.85.1057.0     28,672  Dbnmpntw.dll     
   10-Dec-2004  16:09  2.80.1057.0       315,392  Msadce.dll       
   10-Dec-2004  16:09  2.80.1057.0       135,168  Msadco.dll       
   10-Dec-2004  16:09  2.80.1057.0        49,152  Msadcs.dll       
   10-Dec-2004  16:09  2.80.1057.0       147,456  Msadds.dll       
   10-Dec-2004  16:09  2.80.1057.0       507,904  Msado15.dll      
   10-Dec-2004  16:10  2.80.1057.0       163,840  Msadomd.dll      
   10-Dec-2004  16:10  2.80.1057.0       184,320  Msadox.dll       
   10-Dec-2004  16:09  2.80.1057.0        53,248  Msadrh15.dll     
   10-Dec-2004  16:10  2.80.1057.0       225,280  Msdaora.dll      
   10-Dec-2004  16:09  2.80.1057.0       192,512  Msdaprst.dll     
   10-Dec-2004  16:09  2.80.1057.0       147,456  Msdart.dll       
   10-Dec-2004  16:09  2.80.1057.0       303,104  Msdasql.dll      
   10-Dec-2004  16:10  2.575.1057.0      139,264  Msorcl32.dll     
   10-Dec-2004  16:09  3.525.1057.0      221,184  Odbc32.dll       
   10-Dec-2004  16:10  2000.85.1057.0     24,576  Odbcbcp.dll      
   10-Dec-2004  16:09  2.80.1057.0       442,368  Oledb32.dll      
   10-Dec-2004  16:09  2000.85.1057.0    503,808  Sqloledb.dll     
   10-Dec-2004  16:09  2000.85.1057.0    401,408  Sqlsrv32.dll     
   10-Dec-2004  15:57  2000.85.1057.0    208,896  Sqlxmlx.dll      

Note: When you receive this hotfix from Microsoft Product Support Services, the article number that is listed in the hotfix package may be different from the cumulative article number.


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

More information

For more information, click the following article number to view the article in the Microsoft Knowledge Base:
824684 Description of the standard terminology that is used to describe Microsoft software updates


Article ID: 839801 - Last Review: June 20, 2014 - Revision: 10.0
kbautohotfix kbqfe kbhotfixserver kbfix KB839801

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