FIX: SQL Server 2005 may not perform histogram amendments when you use trace flags 2389 and 2390

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Article ID: 929278 - View products that this article applies to.
Bug #: 50000568 (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.
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SUMMARY

This article describes the following about this hotfix release:
  • The issues that are fixed by this 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 replaces any other hotfix package
  • Whether you must make any registry changes
  • The files that are contained in the hotfix package

SYMPTOMS

Consider the following scenario. You use trace flags 2389 and 2390 in Microsoft SQL Server 2005. The value of the current RowCount property for a table is less than the value that was recorded for the table when statistics were updated. In this scenario, SQL Server may not perform histogram amendments. Additionally, you may experience the following symptoms:
  • Bad estimates and execution plans are calculated.
  • Query performance ultimately decreases.

RESOLUTION

Hotfix information

A supported hotfix is 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 software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if 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. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site:
http://support.microsoft.com/contactus/?ws=support
Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.

Prerequisites

To apply this hotfix, you must have SQL Server 2005 Service Pack 1 installed. For more information about how to obtain SQL Server 2005 Service Pack 1, 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

Restart information

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

Hotfix replacement information

The hotfix does not replace any other hotfixes.

Registry information

You do not have to change the registry.

File information

This hotfix contains only those files that are required to correct the issues that this article describes. 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, 32-bit versions
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Databasemailengine.dll9.0.2209.072,48011-Dec-200612:26x86
Logread.exe2005.90.2209.0398,11211-Dec-200612:26x86
Microsoft.analysisservices.adomdclient.dll9.0.2209.0543,52011-Dec-200612:26x86
Microsoft.analysisservices.deploymentengine.dll9.0.2209.0138,01611-Dec-200612:26x86
Microsoft.analysisservices.dll9.0.2209.01,215,26411-Dec-200612:26x86
Microsoft.sqlserver.mgdsqldumper.dll2005.90.2209.075,55211-Dec-200612:26x86
Microsoft.sqlserver.sqlenum.dll9.0.2209.0908,06411-Dec-200612:26x86
Msasxpress.dll9.0.2209.022,30411-Dec-200612:26x86
Msgprox.dll2005.90.2209.0197,92011-Dec-200612:26x86
Msmdlocal.dll9.0.2209.015,614,75211-Dec-200612:26x86
Msmdredir.dll9.0.2209.03,990,30411-Dec-200612:26x86
Qrdrsvc.exe2005.90.2209.0366,88011-Dec-200612:26x86
Rdistcom.dll2005.90.2209.0640,80011-Dec-200612:26x86
Repldp.dll2005.90.2209.0184,60811-Dec-200612:26x86
Replmerg.exe2005.90.2209.0318,24011-Dec-200612:26x86
Replprov.dll2005.90.2209.0547,61611-Dec-200612:26x86
Replrec.dll2005.90.2209.0782,11211-Dec-200612:26x86
Replsub.dll2005.90.2209.0404,76811-Dec-200612:26x86
Spresolv.dll2005.90.2209.0174,36811-Dec-200612:26x86
Sqlaccess.dll2005.90.2209.0347,93611-Dec-200612:26x86
Sqlagent90.exe2005.90.2209.0318,75211-Dec-200612:26x86
Sqlservr.exe2005.90.2209.028,969,81611-Dec-200612:27x86
Xmlsub.dll2005.90.2209.0192,80011-Dec-200612:27x86
Xpstar90.dll2005.90.2209.0292,64011-Dec-200612:27x86
Xpstar90.rll2005.90.2209.0152,86411-Dec-200612:26x86
SQL Server 2005, 64-bit version
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Databasemailengine.dll9.0.2209.072,48011-Dec-200612:17x86
Logread.exe2005.90.2209.0522,52811-Dec-200612:17x64
Microsoft.analysisservices.adomdclient.dll9.0.2209.0543,52011-Dec-200612:17x86
Microsoft.analysisservices.adomdclient.dll9.0.2209.0543,52011-Dec-200612:26x86
Microsoft.analysisservices.deploymentengine.dll9.0.2209.0138,01611-Dec-200612:26x86
Microsoft.analysisservices.dll9.0.2209.01,215,26411-Dec-200612:26x86
Microsoft.sqlserver.mgdsqldumper.dll2005.90.2209.091,42411-Dec-200612:17x64
Microsoft.sqlserver.mgdsqldumper.dll2005.90.2209.075,55211-Dec-200612:26x86
Microsoft.sqlserver.sqlenum.dll9.0.2209.0875,29611-Dec-200612:17x86
Msasxpress.dll9.0.2209.027,42411-Dec-200612:18x64
Msasxpress.dll9.0.2209.022,30411-Dec-200612:26x86
Msgprox.dll2005.90.2209.0259,36011-Dec-200612:18x64
Msmdlocal.dll9.0.2209.015,614,75211-Dec-200612:26x86
Msmdredir.dll9.0.2209.03,990,30411-Dec-200612:26x86
Qrdrsvc.exe2005.90.2209.0431,39211-Dec-200612:18x64
Rdistcom.dll2005.90.2209.0833,82411-Dec-200612:18x64
Repldp.dll2005.90.2209.0235,29611-Dec-200612:18x64
Repldp.dll2005.90.2209.0184,60811-Dec-200612:26x86
Replmerg.exe2005.90.2209.0415,00811-Dec-200612:18x64
Replprov.dll2005.90.2209.0745,24811-Dec-200612:18x64
Replrec.dll2005.90.2209.01,008,41611-Dec-200612:18x64
Replsub.dll2005.90.2209.0525,60011-Dec-200612:18x64
Spresolv.dll2005.90.2209.0223,00811-Dec-200612:18x64
Sqlaccess.dll2005.90.2209.0355,10411-Dec-200612:18x86
Sqlagent90.exe2005.90.2209.0389,92011-Dec-200612:18x64
Sqlservr.exe2005.90.2209.039,351,07211-Dec-200612:18x64
Xmlsub.dll2005.90.2209.0317,21611-Dec-200612:18x64
Xpstar90.dll2005.90.2209.0540,96011-Dec-200612:18x64
Xpstar90.rll2005.90.2209.0153,37611-Dec-200612:18x64

WORKAROUND

To work around this problem, manually run the UPDATE STATISTICS statement on the table.

STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

MORE INFORMATION

For more information about another related issue, click the following article number to view the article in the Microsoft Knowledge Base:
922063 FIX: You may notice a large increase in compile time when you enable trace flags 2389 and 2390 in SQL Server 2005 Service Pack 1
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

Properties

Article ID: 929278 - Last Review: October 8, 2011 - Revision: 2.0
APPLIES TO
  • Microsoft SQL Server 2005 Developer Edition
  • Microsoft SQL Server 2005 Enterprise Edition
  • Microsoft SQL Server 2005 Enterprise X64 Edition
  • Microsoft SQL Server 2005 Standard Edition
  • Microsoft SQL Server 2005 Standard X64 Edition
  • Microsoft SQL Server 2005 Workgroup Edition
Keywords: 
kbautohotfix kbsql2005engine kbhotfixserver kbqfe KB929278

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