FIX: False assertion error when you try to convert the value from an XML column to an XML variable in SQL Server 2008, in SQL Server 2008 R2 or in SQL Server 2012

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Article ID: 2644794 - View products that this article applies to.
Microsoft distributes Microsoft SQL Server 2008 Service Pack 3 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 Service Pack 3 fix release.
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Symptoms

Consider the following scenario:
  • You have a table in SQL Server 2008, in SQL Server 2008 R2 or in SQL Server 2012 that has an xml data type column, and this column is associated with an XML schema.
  • You define an XML data type variable that is not associated with an XML schema.
  • You run a query that tries to convert the value from the XML column to the XML variable.
In this scenario, an assertion error occurs. Additionally, the query execution fails, and you receive an error message that resembles the following:
Location: tmpilb.cpp:2580

Expression: fFalse

SPID: 76

Process ID: 2244

Description: Attempt to access expired blob handle (3)

Location: tmpilb.cpp:2580

Expression: fFalse

SPID: 76

Process ID: 2244

Description: Attempt to access expired blob handle (3)

Msg 3624, Level 20, State 1, Line 2

A system assertion check has failed. Check the SQL Server error log for details. Typically, an assertion failure is caused by a software bug or data corruption. To check for database corruption, consider running DBCC CHECKDB. If you agreed to send dumps to Microsoft during setup, a mini dump will be sent to Microsoft. An update might be available from Microsoft in the latest Service Pack or in a QFE from Technical Support.

Msg 0, Level 20, State 0, Line 0

A severe error occurred on the current command. The results, if any, should be discarded.

Resolution

Cumulative update information

Cumulative update package 1 for SQL Server 2012 Service Pack 1

The fix for this issue was first released in Cumulative Update 1. For more information about how to obtain this cumulative update package for SQL Server 2012 Service Pack 1, click the following article number to view the article in the Microsoft Knowledge Base:
2765331 Cumulative update package 1 for SQL Server 2012 Service Pack 1
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 2012 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:
2772858 The SQL Server 2012 builds that were released after SQL Server 2012 Service Pack 1 was released

SQL Server 2008 R2 Service Pack 2

The fix for this issue was first released in Cumulative Update 2 for SQL Server 2008 R2 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:
2740411 Cumulative Update package 2 for SQL Server 2008 R2 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 2008 R2 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:
2730301 The SQL Server 2008 R2 builds that were released after SQL Server 2008 R2 Service Pack 2 was released

SQL Server 2008 R2 Service Pack 1

The fix for this issue was first released in Cumulative Update 8. For more information about how to obtain this cumulative update package for SQL Server 2008 R2 Service Pack 1, click the following article number to view the article in the Microsoft Knowledge Base:
2723743 Cumulative update package 8 for SQL Server 2008 R2 SP1
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 2008 R2 Service Pack 1 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:
2567616 The SQL Server 2008 R2 builds that were released after SQL Server 2008 R2 SP1 was released

SQL Server 2012

The fix for this issue was first released in Cumulative Update 3 for SQL Server 2012. For more information about this cumulative update package, click the following article number to view the article in the Microsoft Knowledge Base:
2723749 Cumulative update package 3 for SQL Server 2012
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 2012 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:
2692828 The SQL Server 2012 builds that were released after SQL Server 2012 was released
You must apply a SQL Server 2012 hotfix to an installation of SQL Server 2012.

SQL Server 2008 Service Pack 3

The fix for this issue was first released in Cumulative Update 6 for SQL Server 2008 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:
2715953 Cumulative update package 6 for SQL Server 2008 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 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:
2629969 The SQL Server 2008 builds that were released after SQL Server 2008 Service Pack 3 was released
Microsoft SQL Server 2008 hotfixes are created for specific SQL Server service packs. You must apply a SQL Server 2008 Service Pack 3 hotfix to an installation of SQL Server 2008 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.

Status

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

Workaround

To work around this issue, define the XML variable with the same XML schema that the table uses.

More information

For more information about parallel hash joins, go to the following MSDN Blogs website:
General information about parallel hash joins
For more information about Query Execution Bitmap filters, go to the following MSDN Blogs website:
General information about Query Execution Bitmap filters

Properties

Article ID: 2644794 - Last Review: November 21, 2012 - Revision: 4.0
Applies to
  • Microsoft SQL Server 2008 Developer
  • Microsoft SQL Server 2008 Enterprise
  • Microsoft SQL Server 2008 Enterprise Evaluation
  • Microsoft SQL Server 2008 Express
  • Microsoft SQL Server 2008 Express with Advanced Services
  • Microsoft SQL Server 2008 R2 Datacenter
  • Microsoft SQL Server 2012 Business Intelligence
  • Microsoft SQL Server 2012 Developer
  • Microsoft SQL Server 2012 Enterprise
  • Microsoft SQL Server 2012 Express
  • Microsoft SQL Server 2012 Standard
  • Microsoft SQL Server 2012 Web
  • SQL Server 2012 Enterprise Core
Keywords: 
kbtshoot kbqfe kbhotfixserver kbfix kbsurveynew KB2644794

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