Microsoft KB Archive/927105

= FIX: Error message when you try to use the .NET Framework Data Provider for SQL Server in the .NET Framework 2.0 to retrieve the value of a column: &quot;System.InvalidOperationException&quot; or &quot;System.Data.SqlClient.SqlException&quot; =

Article ID: 927105

Article Last Modified on 12/3/2007

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APPLIES TO


 * Microsoft .NET Framework 2.0

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SYMPTOMS
Consider the following scenario. In the Microsoft .NET Framework 2.0, you try to use the .NET Framework Data Provider for Microsoft SQL Server to retrieve the value of a column in a database. The column contains a text value or an image value. The value of the column is the 0xFFFF (65535) value. In this scenario, you may receive one of the following exception error messages:

Error message 1

System.InvalidOperationException: Internal connection fatal error.

Error message 2

System.Data.SqlClient.SqlException: A severe error occurred on the current command. The results, if any, should be discarded.

Note The .NET Framework Data Provider for SQL Server is included in the System.Data.SqlClient namespace.



CAUSE
This problem occurs because the .NET Framework Data Provider for SQL Server in the .NET Framework 2.0 incorrectly treats the 0xFFFF value as a null value for a column that contains a text value or an image value. Therefore, the .NET Framework Data Provider for SQL Server stops reading the rest of the bytes, and Microsoft SQL Server 2005 stops responding (hangs).



Hotfix information
A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Only apply it to systems that are experiencing this specific problem. This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next Microsoft Visual Studio 2005 service pack that contains this hotfix.

To resolve this problem immediately, contact Microsoft Customer Support Services to obtain the hotfix. For a complete list of Microsoft Customer Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:

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

Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

Prerequisites
You must have the .NET Framework 2.0 installed to apply this hotfix.

Hotfix replacement information
This hotfix does not replace any other hotfixes.

Restart requirement
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.

The .NET Framework 2.0, Itanium-based versions


STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; 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

Keywords: kbqfe kbpubtypekc kbhotfixserver KB927105

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