Microsoft KB Archive/291942

= Simultaneous Queries with WMI SNA Provider May Cause System to &quot;Hang&quot; =

Article ID: 291942

Article Last Modified on 2/19/2007

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APPLIES TO


 * Microsoft Host Integration Server 2000 Standard Edition

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This article was previously published under Q291942



SYMPTOMS
Applications that use the Host Integration Server WMI (Windows Management Instrumentation) SNA status provider (Wmisnastatus.dll) to determine the status of logical units (LUs) may cause the system to stop responding (&quot;hang&quot;) if multiple simultaneous queries are performed. Access violations may also occur when an application issues multiple WMI queries to check LU status. The specific access violations may vary but you can capture them by attaching a debugger to the Windows Management Instrumentation (Winmgmt.exe) service.



CAUSE
The WMI SNA status provider doesn't properly synchronize requests when the provider accesses the shared memory that stores all the management data when multiple simultaneous WMI queries are issued.



RESOLUTION
To resolve this problem, obtain the latest service pack for Host Integration Server 2000. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

328152 How to Obtain the Latest Host Integration Server 2000 Service Pack



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article. This problem was first corrected in Host Integration Server 2000 Service Pack 1.

Keywords: kbbug kbfix kbhostintegserv2000presp1fix kbhostintegserv2000sp1fix KB291942

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