Microsoft KB Archive/816759

= FIX: SqlClient Throws &quot;Timeout Expired&quot; with Extended Stored Procedure =

Article ID: 816759

Article Last Modified on 10/11/2005

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APPLIES TO


 * Microsoft .NET Framework 1.0
 * Microsoft ADO.NET 1.0
 * Microsoft SQL Server 7.0 Enterprise Edition

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SYMPTOMS
When you execute an extended stored procedure against SQL Server 7.0 by using the .NET Framework Data Provider for SQL Server (SqlClient), you may receive the following error message:

Timeout Expired

The &quot;Timeout Expired&quot; error occurs when the extended stored procedure contains some of the following parameters:
 * CHAR
 * VARCHAR
 * TEXT



CAUSE
This problem occurs because SqlClient incorrectly interprets the length of the parameter as 2 bytes, however, SQL Server 7.0 sends the length as 1 byte. This problem does not occur if you run the same extended stored procedure from a SQL Server 2000 database, because SQL Server 2000 reports the length of the parameter as 2 bytes.



RESOLUTION
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 service pack for the .Net Framework that contains this hotfix.

To resolve this problem immediately, contact Microsoft Product Support Services to obtain the fix. For a complete list of Microsoft Product Support Services phone 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. The English version of this fix has the file attributes (or later) 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 --  21-Mar-2003  23:07  5.50.4134.600   2,935,696  Ndp10_qfem_q816759_en.exe 19-Mar-2003 16:40  1.0.3705.414    1,179,648  System.data.dll



WORKAROUND
There is no workaround for this problem.



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.

Keywords: kbfix kbqfe kbhotfixserver KB816759

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