Microsoft KB Archive/934396

= FIX: Error messages and an event may be logged when you use the Virtual Device Interface in SQL Server 2005 or in SQL Server 2000 =

Article ID: 934396

Article Last Modified on 11/21/2007

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APPLIES TO


 * Microsoft SQL Server 2005 Developer Edition
 * Microsoft SQL Server 2005 Enterprise Edition
 * Microsoft SQL Server 2005 Enterprise Edition for Itanium-based Systems
 * Microsoft SQL Server 2005 Enterprise X64 Edition
 * Microsoft SQL Server 2005 Express Edition
 * Microsoft SQL Server 2005 Standard Edition
 * Microsoft SQL Server 2005 Standard X64 Edition
 * Microsoft SQL Server 2005 Workgroup Edition
 * Microsoft SQL Server 2000 Developer Edition
 * Microsoft SQL Server 2000 Enterprise Edition
 * Microsoft SQL Server 2000 Standard Edition
 * Microsoft SQL Server 2000 Personal Edition

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Bug #: 50000895 (SQL Hotfix)



Microsoft distributes Microsoft SQL Server 2005 fixes as one downloadable file. Because the fixes are cumulative, each new release contains all the hotfixes and all the security fixes that were included with the previous SQL Server 2005 fix release.



SUMMARY
This article describes the following about this hotfix release:
 * The issues that are fixed by the hotfix package
 * The prerequisites for applying the hotfix package
 * Whether you must restart the computer after you apply the hotfix package
 * Whether the hotfix package is replaced by any other hotfix package
 * Whether you must make any registry changes after you apply the hotfix package
 * The files that are contained in the hotfix package



SYMPTOMS
When you use a Volume Shadow Copy Service (VSS) writer to back up a snapshot in Microsoft SQL Server 2005 or in SQL Server 2000, an event that resembles the following may be logged in the Application log: Event Source: SQLVDI

Event Category: None

Event ID: 1

Date:

Time:

User: N/A

Computer:

Description: SQLVDI: Loc=CVDS::Cleanup. Desc=Release(ClientAliveMutex). ErrorCode=(288)Attempt to release mutex not owned by caller. . Process=7100. Thread=3132. Client. Instance=SHAREPOINT. VD=.

Note The backup operation succeeds.

This problem may affect other Virtual Device Interface (VDI)-based applications. When you use the lightweight pooling (fiber mode) SQL Server configuration option, a backup operation for a very large database (VLDB) that takes a long time may fail. Additionally, one or more of the following error messages may be logged in the SQL Server error log:

Error message 1

2007-06-18 11:21:00.83 spid820 BackupVirtualDeviceFile::ClearError: failure on backup device 'VDI_ '. Operating system error 995(The I/O operation has been aborted because of either a thread exit or an application request.).

Error message 2

2007-06-18 11:21:00.83 spid820 Error: 18210, Severity: 16, State: 1.

2007-06-18 11:21:00.83 spid820 BackupMedium::ReportIoError: write failure on backup device 'VDI_ '.

Operating system error 995(The I/O operation has been aborted because of either a thread exit or an application request.)

Error message 3

2007-06-18 11:21:00.87 spid820 Error: 18210, Severity: 16, State: 1.

2007-06-18 11:21:00.87 spid820 BackupVirtualDeviceFile::RequestDurableMedia: Flush failure on backup device 'VDI_.

Operating system error 995(The I/O operation has been aborted because of either a thread exit or an application request.)



CAUSE
This problem occurs because of a race condition. The race condition incorrectly logs the event in the Application log.



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
To apply this hotfix, you must have SQL Server 2005 Service Pack 2 installed. For more information about how to obtain SQL Server 2005 Service Pack 2, click the following article number to view the article in the Microsoft Knowledge Base:

913089 How to obtain the latest service pack for SQL Server 2005

Note You can also apply this hotfix if you install the Sqlvdi.dll file from the backward compatibility update on a computer that has SQL Server 2000 installed.

Restart information
You do not have to restart the computer after you apply this hotfix.

Registry information
You do not have to change the registry.

Hotfix file information
This hotfix contains only those files that are required to correct the issues that this article lists. This hotfix may not contain all the files that you must have to fully update a product to the latest build.

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 item in Control Panel.

SQL Server 2005 backward compatibility components, Itanium architecture version


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 about software update terminology, 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

Keywords: kbqfe kbpubtypekc kbhotfixserver KB934396

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