DetailPage-MSS-KB

Microsoft small business knowledge base

Article ID: 961050 - Last Review: June 16, 2009 - Revision: 2.0

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 Page

SYMPTOMS

You set the READ COMMITTED SNAPSHOT option on a database in Microsoft SQL Server 2005. When you run a query that has a parallel execution plan under the READ COMMITTED isolation level on the database, you may obtain uncommitted data.

CAUSE

When SQL Server 2005 performs parallel scans under the READ COMMITTED isolation level, SQL Server 2005 incorrectly initializes child sub-scans. Therefore, SQL Server 2005 performs a NOLOCK scan instead of a versioned scan. This can potentially cause the parallel execution plan to return uncommitted data.

RESOLUTION

Cumulative update information for SQL Server 2005 Service Pack 2

The fix for this issue was first released in Cumulative Update 13 for SQL Server 2005 Service Pack 2. For more information about how to obtain this cumulative update package, click the following article number to view the article in the Microsoft Knowledge Base:
967908  (http://support.microsoft.com/kb/967908/ ) Cumulative update package 13 for SQL Server 2005 Service Pack 2
Note Because the builds are cumulative, each new fix release contains all the hotfixes and all the security fixes that were included with the previous SQL Server 2005 fix release. We recommend that you consider applying the most recent fix release that contains this hotfix. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
937137  (http://support.microsoft.com/kb/937137/ ) The SQL Server 2005 builds that were released after SQL Server 2005 Service Pack 2 was released

Cumulative update information for SQL Server 2005 Service Pack 3

The fix for this issue was first released in Cumulative Update 4 for SQL Server 2005 Service Pack 3. For more information about this cumulative update package, click the following article number to view the article in the Microsoft Knowledge Base:
970279  (http://support.microsoft.com/kb/970279/LN/ ) Cumulative update package 4 for SQL Server 2005 Service Pack 3
Note Because the builds are cumulative, each new fix release contains all the hotfixes and all the security fixes that were included with the previous SQL Server 2005 fix release. Microsoft recommends that you consider applying the most recent fix release that contains this hotfix. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
960598  (http://support.microsoft.com/kb/960598/LN/ ) The SQL Server 2005 builds that were released after SQL Server 2005 Service Pack 3 was released
Microsoft SQL Server 2005 hotfixes are created for specific SQL Server service packs. You must apply a SQL Server 2005 Service Pack 3 hotfix to an installation of SQL Server 2005 Service Pack 3. By default, any hotfix that is provided in a SQL Server service pack is included in the next SQL Server service pack.

WORKAROUND

To work around this problem, set the value of the MAXDOP query hint to 1 when you run the query.

STATUS

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

MORE INFORMATION

More information about cumulative update package 13 for SQL Server 2005 Service Pack 2

For more information about what files are changed, and for information about any prerequisites to apply the cumulative update package that contains the hotfix that is described in this Microsoft Knowledge Base article, click the following article number to view the article in the Microsoft Knowledge Base:
967908  (http://support.microsoft.com/kb/967908/LN/ ) Cumulative update package 13 for SQL Server 2005 Service Pack 2

More information about cumulative update package 4 for SQL Server 2005 Service Pack 3

For more information about what files are changed, and for information about any prerequisites to apply the cumulative update package that contains the hotfix that is described in this Microsoft Knowledge Base article, click the following article number to view the article in the Microsoft Knowledge Base:
970279  (http://support.microsoft.com/kb/970279/LN/ ) Cumulative update package 4 for SQL Server 2005 Service Pack 3

REFERENCES

For more information about parallel query processing, visit the following Microsoft Developer Network (MSDN) Web site:
http://msdn.microsoft.com/en-us/library/ms178065(SQL.90).aspx (http://msdn.microsoft.com/en-us/library/ms178065(SQL.90).aspx)
For more information about the list of builds that are available after SQL Server 2005 Service Pack 2, click the following article number to view the article in the Microsoft Knowledge Base:
937137  (http://support.microsoft.com/kb/937137/ ) The SQL Server 2005 builds that were released after SQL Server 2005 Service Pack 2 was released
For more information about the list of builds that are available after SQL Server 2005 Service Pack 3, click the following article number to view the article in the Microsoft Knowledge Base:
960598  (http://support.microsoft.com/kb/960598/ ) The SQL Server 2005 builds that were released after SQL Server 2005 Service Pack 3 was released
For more information about the Incremental Servicing Model for SQL Server, click the following article number to view the article in the Microsoft Knowledge Base:
935897  (http://support.microsoft.com/kb/935897/ ) An Incremental Servicing Model is available from the SQL Server team to deliver hotfixes for reported problems
For more information about the naming schema for SQL Server updates, click the following article number to view the article in the Microsoft Knowledge Base:
822499  (http://support.microsoft.com/kb/822499/ ) New naming schema for Microsoft SQL Server software update packages
For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:
824684  (http://support.microsoft.com/kb/824684/ ) Description of the standard terminology that is used to describe Microsoft software updates

APPLIES TO
  • Microsoft SQL Server 2005 Developer Edition
  • Microsoft SQL Server 2005 Enterprise Edition
  • Microsoft SQL Server 2005 Standard Edition
  • Microsoft SQL Server 2005 Standard X64 Edition
  • Microsoft SQL Server 2005 Enterprise X64 Edition
  • Microsoft SQL Server 2005 Enterprise Edition for Itanium-based Systems
  • Microsoft SQL Server 2005 Standard Edition for Itanium-based Systems
  • Microsoft SQL Server 2005 Workgroup Edition
Keywords: 
kbsurveynew kbhotfixrollup kbfix kbqfe kbexpertiseadvanced KB961050
Share
Additional support options
Ask The Microsoft Small Business Support Community
Contact Microsoft Small Business Support
Find Microsoft Small Business Support Certified Partner
Find a Microsoft Store For In-Person Small Business Support