OFF97: DAO/Jet : Race Condition Causes Hang on Multiprocessor with Recordset (244799)
The information in this article applies to:
- Microsoft Office 97 for Windows
- Microsoft Visual Studio, Enterprise Edition 6.0, when used with:
- the operating system: Microsoft Windows NT 4.0
This article was previously published under Q244799 SYMPTOMS
When executing on a multiprocessor system, using Data Access Objects (DAO) or JET methods to retrieve or update recordsets and Querydefs can produce a hang condition in the application.
CAUSE
There is a race condition that can occur on a multiprocessor system when more than one thread is accessing a file at the same time. This bug has been identified within the NT kernel. Under the correct circumstances, when two threads attempt to use a file simultaneously, the thread closing the file can potentially be pre-empted. Because the final cleanup on the file is not performed, all the threads attempting to access the file enter into a wait state from which they do not return.
RESOLUTION
This issue has been addressed in a Microsoft Windows NT 4.0 hotfix. For directions on how to obtain this hotfix, see the following Knowledge Base article:
246467: RAS Server Stops Responding to New PPP Connection Requests
STATUSMicrosoft has confirmed that this is a problem in Windows NT 4.0.
| Modification Type: | Minor | Last Reviewed: | 9/23/2005 |
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| Keywords: | kbHotfixServer kbQFE kbfix kbprb KB244799 |
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