FIX: OLE DB provider for DB2 may stop responding when the CNTQRY and QRYDTA messages are sent in Host Integration Server 2009 or in Host Integration Server 2010

Symptoms

When you run some queries for a DB2 database in Microsoft Host Integration Server 2009 or in Microsoft Host Integration Server 2010, the queries might not return any values. However, the OLE DB provider for DB2 may incorrectly miss the End-of-Row marker. Therefore, the provider enters an infinite loop when the Continue Query (CNTQRY) and Query Answer Set Data (QRYDTA) messages are sent. This infinite loop causes the provider to stop responding.

Resolution

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 website:

http://support.microsoft.com/contactus/?ws=supportNote 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.

Prerequisites

To apply this hotfix, you must have Microsoft Host Integration Server 2009 or Microsoft Host Integration Server 2010 installed.

Restart information

You do not have to restart the computer after you apply this hotfix.

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 item in Control Panel.

For all supported x86-based versions of Host Integration Server 2010

File name

File version

Size

Date

Time

Platform

Db2oledb.dll

8.5.4246.2

640,848

26-Oct-2010

23:49

Not applicable

Microsoft.HostIntegration.DrdaLink.dll

8.5.4246.2

58,760

26-Oct-2010

23:49

Not applicable

Msdrda.dll

8.5.4246.2

972,624

26-Oct-2010

23:49

Not applicable

For all supported x64-based versions of Host Integration Server 2010

File name

File version

Size

Date

Time

Platform

Db2oledb.dll

8.5.4246.2

897,872

26-Oct-2010

23:56

x64

Microsoft.HostIntegration.DrdaLink.dll

8.5.4246.2

69,000

26-Oct-2010

23:56

x64

Msdrda.dll

8.5.4246.2

1,689,424

26-Oct-2010

23:56

x64

Db2oledb.dll

8.5.4246.2

640,848

26-Oct-2010

23:49

x86

Microsoft.HostIntegration.DrdaLink.dll

8.5.4246.2

58,760

26-Oct-2010

23:49

x86

Msdrda.dll

8.5.4246.2

972,624

26-Oct-2010

23:49

x86

For all supported x86-based versions of Host Integration Server 2009

File name

File version

Size

Date

Time

Platform

Db2oledb.dll

8.0.3785.2

539,984

04-Nov-2010

22:06

Not applicable

Drdaresync.

8.0.3785.2

476,504

04-Nov-2010

22:06

Not applicable

Microsoft.HostIntegration.Adapters.MsDb2.Runtime.dll

8.0.3785.2

79,784

04-Nov-2010

22:06

Not applicable

Microsoft.HostIntegration.DataAccessLibrary.dll

8.0.3785.2

1,279,896

04-Nov-2010

22:06

Not applicable

Microsoft.HostIntegration.MsDb2Client.dll

8.0.3785.2

239,504

04-Nov-2010

22:06

Not applicable

Msdrda.dll

8.0.3785.2

875,856

04-Nov-2010

22:06

Not applicable

Snanls.dll

8.0.3785.2

109,392

04-Nov-2010

22:06

Not applicable

For all supported x64-based versions of Host Integration Server 2009

File name

File version

Size

Date

Time

Platform

Db2oledb.dll

8.0.3785.2

763,216

04-Nov-2010

22:10

x64

Drdaresync.exe

8.0.3785.2

672,600

04-Nov-2010

22:10

x64

Status

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

References

For more information about the OLE DB provider, visit the following Microsoft Developer Network (MSDN) website:

Overview of the OLE DB provider

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