Microsoft KB Archive/916820

= FIX: An access violation may occur in the Msmdsrv.exe process, and the server may crash when you try to run an Alter DDL command in SQL Server 2005 Analysis Services =

Article ID: 916820

Article Last Modified on 11/4/2007

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APPLIES TO


 * Microsoft SQL Server 2005 Analysis Services

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Bug: #433 (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 the hotfix package
 * The prerequisites for installing the hotfix package
 * Whether you must restart the computer after you install the hotfix package
 * Whether the hotfix package is replaced by any other hotfix package
 * Whether you must make any registry changes
 * The files that are contained in the hotfix package



SYMPTOMS
Consider the following scenario. In Microsoft SQL Server 2005 Analysis Services, you try to run an Alter data definition language (DDL) command. This Alter DDL command deletes the dimension hierarchies from the database without deleting the dimension hierarchies from the cube. In this scenario, an access violation may occur in the Msmdsrv.exe process. Additionally, the server may crash.



Hotfix information
This hotfix is included in the cumulative hotfix package (build 2153) for SQL Server 2005 that is discussed in Microsoft Knowledge Base article 918222. For more information, click the following article number to view the article in the Microsoft Knowledge Base:

918222 Cumulative hotfix package (build 2153) for SQL Server 2005 is available

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
To apply this hotfix, you must have Analysis Services installed on the computer.

Restart information
You do not have to restart the computer after you apply this hotfix. However, this hotfix stops and then restarts the Analysis Services service. If you configured the server for HTTP access, you must stop Microsoft Internet Information Services (IIS) and then restart IIS after the installation is finished. If you installed Analysis Services as a named instance, you must stop the SQL Server Browser service. You must stop the SQL Server Browser service because the Msmdredir.dll component of the SQL Server Browser service is updated during the installation of this hotfix.

Registry information
You do not have to change the registry.

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 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 Analysis Services Itanium-architecture version


WORKAROUND
To work around this problem by using the Analysis Management Objects (AMO), wrap the Dimension.Update method call in a transaction. Then, call the Dimension.Update method by using the UpdateOptions.ExpandFull parameter. Additionally, add code to delete the dimension hierarchies from the cube. For example, follow these steps:
 * 1) Start the transaction.
 * 2) Update the dimension.
 * 3) Iterate through the cubes.
 * 4) Alter the cubes that contain the dimension, and then delete the dimension hierarchies.
 * 5) Commit the transaction.

The following code example illustrates these steps. server.BeginTransaction; try {   dim.Update(UpdateOptions.ExpandFull, UpdateMode.UpdateOrCreate); foreach (string hierarchyName in BadHierarchies) {        foreach (Cube cub in db.Cubes) {             CubeDimension cub_dim = (CubeDimension)cub.Dimensions.Find(dim.Name.Trim); if (cub_dim != null) {                  cub_dim.Hierarchies.Remove(hierarchyName.Trim); cub_dim.Dispose; cub.Update(UpdateOptions.ExpandFull, UpdateMode.UpdateOrCreate); }          }       }       server.CommitTransaction; } catch (Exception ex) {      System.Diagnostics.Trace.WriteLine(ex.Message); server.RollbackTransaction; }



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
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: kbsql2005as kbqfe kbpubtypekc KB916820

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