SYMPTOMS
Consider the following scenario.
- You are running Microsoft Windows Server 2003 Service Pack 1 (SP1).
- An ADO.NET-based application uses the System.Data.SqlClient class to establish a new connection.
- When
an error occurs in the application, the internal connection pooling mechanism repeatedly tries to make a new connection every few minutes. This behavior occurs even if the application is not regularly requesting new connections.
In this scenario, you may experience one of the
following symptoms:
- When Microsoft SQL Server is not available for new connections and
you run the application by using the Microsoft Visual Studio .NET 2003 Debugger, the following behavior occurs:
- The
debugger pauses to run code.
- A message appears that states that an unhandled
exception occurred. If the application has been defined to
handle exception events, the exception will be caught by the event handler.
- When SQL Server is available for new connections, no problem is visible.
If an exception occurs in the application, you may receive a database connection failure error message.
Note This problem does not occur in Microsoft Windows Server
2003.
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 Microsoft .NET Framework 1.1 service pack that contains this hotfix.
To resolve this problem immediately, contact Microsoft Product Support Services to obtain the hotfix. For a complete list of Microsoft Product Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:
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
To install this hotfix, you must have the .NET Framework 1.1
Service Pack 1 (SP1) installed on the computer.
Restart requirement
You do not have to restart the computer after you apply this
hotfix.
Hotfix replacement information
This hotfix does not replace any other hotfixes.
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 tool in Control Panel.
Date Time Version Size File name
-------------------------------------------------------------
27-Jul-2005 03:00 1.1.4322.2339 1,298,432 System.data.dll