Microsoft KB Archive/917971

= FIX: You may receive more than 100,000 page faults when you try to back up a SQL Server 2005 database that contains hundreds of files and file groups =

Article ID: 917971

Article Last Modified on 11/20/2007

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APPLIES TO


 * Microsoft SQL Server 2005 Standard Edition
 * Microsoft SQL Server 2005 Standard X64 Edition
 * Microsoft SQL Server 2005 Standard Edition for Itanium-based Systems
 * Microsoft SQL Server 2005 Enterprise Edition
 * Microsoft SQL Server 2005 Enterprise X64 Edition
 * Microsoft SQL Server 2005 Enterprise Edition for Itanium-based Systems
 * Microsoft SQL Server 2005 Developer Edition

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Bug #: 50000162 (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 this hotfix package
 * The prerequisites for installing the hotfix package
 * Information about whether you must restart the computer after you install the hotfix package
 * Information about whether you must make any registry changes
 * The files that are contained in the hotfix package



SYMPTOMS
When you try to back up a SQL Server 2005 database that contains hundreds of files and file groups, you may experience the following symptoms:
 * You receive more than 100,000 page faults.
 * The SQL Server database runs slowly or stalls.

Note When this problem occurs, user mode time is a large percentage of the CPU utilization.

The error condition may resemble the following: 2006-04-05 17:52:04.46 Server * 2006-04-05 17:52:04.46 Server * BEGIN STACK DUMP: 2006-04-05 17:52:04.46 Server * 04/05/06 17:52:04 spid 0 2006-04-05 17:52:04.46 Server * 2006-04-05 17:52:04.46 Server * Non-yielding Scheduler 2006-04-05 17:52:04.46 Server * 2006-04-05 17:52:04.46 Server * *******************************************************************************

2006-04-05 17:52:04.46 Server Stack Signature for the dump is 0x00000000000000A8 2006-04-05 17:52:18.92 Server External dump process return code 0x20002001. The error information has been submitted to Watson error reporting. 2006-04-05 17:52:18.92 Server Process 62:0:0 (0x3e14) Worker 0x0000000005DBE1C0 appears to be non-yielding on Scheduler 3. Thread creation time: 12788747103671. Approx Thread CPU Used: kernel 12437 ms, user 61593 ms. Process Utilization 16%. System Idle 76%. Interval: 75000 ms.



CAUSE
This problem occurs because the database history is recorded in the msdb database. When you have a database that contains lots of files and file groups, regularly clear the msdb database backup history.



RESOLUTION
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
There are no prerequisites for this hotfix.

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 of 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.

64-bit hotfix for Itanium processors


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

Keywords: kbtshoot kbbug kbfix kbqfe kbpubtypekc kbhotfixserver KB917971

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