Microsoft KB Archive/838306

= FIX: Web applications that use the Jet database engine may stop responding under heavy load =

Article ID: 838306

Article Last Modified on 12/3/2007

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APPLIES TO


 * Microsoft Internet Information Services 6.0
 * Microsoft Windows Server 2003, Standard Edition (32-bit x86)

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SYMPTOMS
Your Web applications that use the Microsoft Jet database engine may stop responding.

Note Microsoft Access uses the Jet database engine.



CAUSE
This problem occurs because a bug exists in the Jet database engine. This problem occurs only on Microsoft Windows Server 2003.

In Windows Server 2003, COM+ changes how frequently the CoFreeUnusedLibraries function is called. This change causes the Jet drivers to reinitialize frequently. This behavior may cause a deadlock condition.

This problem occurs most frequently when the Web server is under a heavy load.



Service pack information
To resolve this problem, obtain the latest service pack for Windows Server 2003. For more information, click the following article number to view the article in the Microsoft Knowledge Base:

889100 How to obtain the latest service pack for Windows Server 2003

Hotfix information
A supported hotfix is now 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. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next service pack that contains this hotfix.

To resolve this problem, submit a request to Microsoft Online Customer Services to obtain the hotfix. To submit an online request to obtain the hotfix, visit the following Microsoft Web site:

http://go.microsoft.com/?linkid=6294451

Note If additional issues occur or 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. To create a separate service request, visit the following Microsoft Web site:

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

Prerequisites
Before you install this hotfix, you must install the security update that is described in the following Microsoft Knowledge Base article:

837001 MS04-014: Vulnerability in the Microsoft Jet Database Engine could permit code execution

Restart requirement
You must 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 tool in Control Panel.   Date         Time   Version     Size     File name -  17-May-2004  23:38  4.0.8704.0  241,693  Msjtes40.dll



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

