Microsoft KB Archive/918753

= FIX: You receive an access violation error message on a server that is running SQL Server 2005 Analysis Services when you run a MDX query that contains a user-defined function =

Article ID: 918753

Article Last Modified on 11/20/2007

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APPLIES TO


 * Microsoft SQL Server 2005 Standard Edition
 * Microsoft SQL Server 2005 Standard X64 Edition
 * Microsoft SQL Server 2005 Standard Edition for Itanium-based Systems
 * Microsoft SQL Server 2005 Enterprise Edition
 * Microsoft SQL Server 2005 Enterprise X64 Edition
 * Microsoft SQL Server 2005 Enterprise Edition for Itanium-based Systems
 * Microsoft SQL Server 2005 Developer Edition
 * Microsoft SQL Server 2005 Analysis Services

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Bug #: 720 (SQL Hotfix)

Bug #: 697 (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.



SUMMARY
This article describes the following about this hotfix release:
 * The issues that are fixed by this hotfix package
 * The prerequisites for installing the hotfix package
 * Information about whether you must restart the computer after you install the hotfix package
 * Information about whether the hotfix package is replaced by any other hotfix package
 * Information about whether you must make any registry changes
 * The files that are contained in the hotfix package



SYMPTOMS
Consider the following scenario:
 * You run a Multidimensional Expressions (MDX) query against a SQL Server 2005 Analysis Services cube.
 * The query contains a user-defined function.
 * The user-defined function iterates over many members in a set.

In this scenario, you may experience the following symptoms:  You receive an access violation error message on the server that is running SQL Server 2005 Analysis Services. The server that is running SQL Server 2005 Analysis Services generates one or more small stack dumps. In the client application, you receive an error message that resembles the following:

Internal error: An unexpected exception occured.





CAUSE
This problem occurs because of a thread synchronization issue inside the SQL Server 2005 Analysis Services engine.

Note This problem occurs more frequently on multiprocessor computers or hyperthreaded computers.



RESOLUTION
A supported hotfix is now 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 service pack that contains this hotfix.

To resolve this problem, submit a request to Microsoft Online Customer Services to obtain the hotfix. To submit an online request to obtain the hotfix, visit the following Microsoft Web site:

http://go.microsoft.com/?linkid=6294451

Note If additional issues occur or 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. To create a separate service request, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

Prerequisites
You must have Microsoft SQL Server 2005 Service Pack 1 (SP1) installed to apply this hotfix.

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 How to obtain the latest service pack for SQL Server 2005

Restart information
After you apply this hotfix, you do not have to restart the computer if the following conditions are true:
 * If Analysis Services is running as a named instance, you stop the SQL Server Browser service before you apply this hotfix.
 * You exit all Analysis Services tools and all client applications before you apply this hotfix.
 * You exit Microsoft Internet Information Services (IIS) before you apply this hotfix.

Registry information
You do not have to change the registry.

Hotfix replacement information
This hotfix does not replace any other hotfixes.

Hotfix file information
This hotfix contains only those files that are required to correct the issues that this article lists. This hotfix may not contain of 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, 64-bit versions


STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section.



MORE INFORMATION
You may receive the following stack dump information when the problem occurs:

<pre class="fixed_text">ChildEBP RetAddr 088db3c8 0133cf87 msmdsrv!MDContext::CreateAndInitHPath+0xa4 088db3e4 0135b53c msmdsrv!MDMember::BuildHPath+0x47 088db424 0155d963 msmdsrv!MDFTuple::GetMember+0x12c 088db438 0982a1d7 msmdsrv!MDXUtils::VGetMemberFromTuple+0x23 088db4f8 09829cb6 msmgdsrv!Microsoft::AnalysisServices::AdomdServer::MemberCollection::Enumerator::GetCurrent+0x4ff 088db54c 09827426 msmgdsrv!Microsoft::AnalysisServices::AdomdServer::MemberCollection::Enumerator::get_Current+0x6

For more information, click the following article number to view the article in the Microsoft Knowledge Base:

824684 Description of the standard terminology that is used to describe Microsoft software updates

Keywords: kbtshoot kbbug kbfix kbqfe kbpubtypekc kbhotfixserver KB918753

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