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FIX: SQL Server 2005 may not perform histogram amendments when you use trace flags 2389 and 2390Article 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. On This PageSUMMARYThis article describes the following about this hotfix
release:
SYMPTOMSConsider 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:
RESOLUTIONHotfix informationA 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.
(http://support.microsoft.com/contactus/?ws=support)
PrerequisitesTo 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
(http://support.microsoft.com/kb/913089/
)
How to obtain the latest service pack for SQL Server 2005
Restart informationYou do not have to restart the computer after you apply this hotfix.Hotfix replacement informationThe hotfix does not replace any other hotfixes.Registry informationYou do not have to change the registry.File informationThis 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 versionsCollapse this table
SQL Server 2005, 64-bit versionCollapse this table
WORKAROUNDTo work around this problem, manually run the UPDATE STATISTICS statement on the table. STATUSMicrosoft 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
For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/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
824684
(http://support.microsoft.com/kb/824684/
)
Description of the standard terminology that is used to describe Microsoft software updates
PropertiesArticle ID: 929278 - Last Review: October 8, 2011 - Revision: 2.0 APPLIES TO
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