Article ID: 976379 - View products that this article applies to.
Microsoft distributes Microsoft SQL Server 2008 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 2008 fix release.
Consider the following scenario:
For example, if the source partition has 10 million rows and the destination partition has 1 million rows, SQL Server moves the 10 million rows that are in the source partition instead of moving the 1 million rows that are in the destination partition. Additionally, SQL Server tracks the moved data in the transaction log. This tracking behavior also affects the performance.
Note This problem also occurs in SQL Server 2005.
The fix for this issue was first released in Cumulative Update 6 for SQL Server 2008 Service Pack 1. For more information about this cumulative update package, click the following article number to view the article in the Microsoft Knowledge Base:
977443Note 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 2008 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:
(http://support.microsoft.com/kb/977443/LN/ )Cumulative update package 6 for SQL Server 2008 Service Pack 1
970365Microsoft SQL Server 2008 hotfixes are created for specific SQL Server service packs. You must apply a SQL Server 2008 Service Pack 1 hotfix to an installation of SQL Server 2008 Service Pack 1. By default, any hotfix that is provided in a SQL Server service pack is included in the next SQL Server service pack.
(http://support.microsoft.com/kb/970365/LN/ )The SQL Server 2008 builds that were released after SQL Server 2008 Service Pack 1 was released
This hotfix optimizes the performance of the merge operation by moving data from the smaller partition to the larger partition. However, this optimization is not applicable when you try to merge two partitions that are mapped to different file groups. Therefore, this hotfix works only when the source partition and the destination partition are mapped to the same filegroup. In the special case in which the smaller partition has no rows, the merge operation will change only the metadata.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
For more information about partition merge operations, visit the following Microsoft Web site:
ALTER PARTITION FUNCTION (Transact-SQL)For information about the Incremental Servicing Model for SQL Server, click the following article number to view the article in the Microsoft Knowledge Base:
935897For more information about the naming schema for SQL Server updates, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/935897/ )An Incremental Servicing Model is available from the SQL Server team to deliver hotfixes for reported problems
822499For 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/822499/ )New naming schema for Microsoft SQL Server software update packages
(http://support.microsoft.com/kb/824684/ )Description of the standard terminology that is used to describe Microsoft software updates
Article ID: 976379 - Last Review: January 29, 2010 - Revision: 2.0
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