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Article ID: 960110 - Last Review: December 20, 2008 - Revision: 2.0

Bug #: 50003880 (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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SYMPTOMS

When you cancel a query on a client computer that is connected to a database server that is running Microsoft SQL Server 2005, a significant delay occurs before the cancel operation is effective on the server. This problem occurs if the following conditions are true:
  • The client computer connects to the database server that is running SQL Server 2005 across a slow link.
  • The query takes a long time to be completed.
  • You cancel the query when it is being executed.
Note In SQL Server 2000, the cancel operation is completed immediately.

Additionally, if you query the sys.sysprocesses view when the query is being canceled, you see a result that resembles the following:
Collapse this tableExpand this table
spidkpidblockedwaittypewaittimelastwaittype
<SPID>198800x0063203ASYNC_NETWORK_IO
<SPID>422400x00BA546CXPACKET
<SPID>14800x00BA546CXPACKET
<SPID>576400x00BA1234CXPACKET
<SPID>600800x00BA718CXPACKET
<SPID>316400x00BA5093CXPACKET
<SPID>26800x00BA5125CXPACKET
<SPID>176000x00BA5125CXPACKET
<SPID>570400x00BA5078CXPACKET

RESOLUTION

Cumulative update information

SQL Server 2005 Service Pack 2

Important You must use this fix if you are running SQL Server 2005 Service Pack 2.

The fix for this issue was first released in Cumulative Update 11 for SQL Server 2005 Service Pack 2. For more information about this cumulative update package, click the following article number to view the article in the Microsoft Knowledge Base:
958735  (http://support.microsoft.com/kb/956854/LN/ ) Cumulative update package 11 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. 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:
937137  (http://support.microsoft.com/kb/937137/LN/ ) The SQL Server 2005 builds that were released after SQL Server 2005 Service Pack 2 was released
Microsoft SQL Server 2005 hotfixes are created for specific SQL Server service packs. You must apply a SQL Server 2005 Service Pack 2 hotfix to an installation of SQL Server 2005 Service Pack 2. By default, any hotfix that is provided in a SQL Server service pack is included in the next SQL Server service pack.

SQL Server 2005 Service Pack 3

Important You must use this fix if you are running SQL Server 2005 Service Pack 3.

The fix for this issue was also later released in Cumulative Update 1 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:
959195  (http://support.microsoft.com/kb/959195/LN/ ) Cumulative update package 1 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, use one of the following methods:
  • Connect to the server by using Remote Desktop Connection, and then run queries locally on the server.
  • Set the maximum degree of parallelism (MAXDOP) hint to 1 in Transact-SQL queries.
  • Set the MAXDOP option to 1 on the server.

    Note We strongly recommend that you do not use this method. This operation may significantly affect the performance of the production systems because all queries will be affected.

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 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:
958735  (http://support.microsoft.com/kb/958735/LN/ ) Cumulative update package 11 for SQL Server 2005 Service Pack 2

REFERENCES

For more information about the list of builds that are available after SQL Server Service Pack 2, click the following article number to view the article in the Microsoft Knowledge Base:
937137  (http://support.microsoft.com/kb/937137/LN/ ) List of the builds that are available after SQL Server 2005 Service Pack 2 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/LN/ ) An Incremental Servicing Model is available from the SQL Server team to deliver hotfixes for reported problems
For more information about how to obtain SQL Server 2005 Service Pack 2, click the following article number to view the article in the Microsoft Knowledge Base:
913089  (http://support.microsoft.com/kb/913089/LN/ ) How to obtain the latest service pack for SQL Server 2005
For more information about the new features and the improvements in SQL Server 2005 Service Pack 2, visit the following Microsoft Web site:
http://go.microsoft.com/fwlink/?LinkId=71711 (http://go.microsoft.com/fwlink/?LinkId=71711)
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/LN/ ) 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/LN/ ) Description of the standard terminology that is used to describe Microsoft software updates

APPLIES TO
  • Microsoft SQL Server 2005 Standard Edition
  • Microsoft SQL Server 2005 Enterprise Edition
  • Microsoft SQL Server 2005 Developer Edition
  • Microsoft SQL Server 2005 Standard X64 Edition
  • Microsoft SQL Server 2005 Enterprise X64 Edition
  • Microsoft SQL Server 2005 Standard Edition for Itanium-based Systems
  • Microsoft SQL Server 2005 Enterprise Edition for Itanium-based Systems
  • Microsoft SQL Server 2005 Workgroup Edition
Keywords: 
kbsurveynew kbhotfixrollup kbfix kbqfe kbexpertiseadvanced KB960110
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