FIX: A memory leak may occur every time that you synchronize a SQL Server Mobile subscriber in SQL Server 2005

Extended support for SQL Server 2005 ended on April 12, 2016

If you are still running SQL Server 2005, you will no longer receive security updates and technical support. We recommend upgrading to SQL Server 2014 and Azure SQL Database to achieve breakthrough performance, maintain security and compliance, and optimize your data platform infrastructure. Learn more about the options for upgrading from SQL Server 2005 to a supported version here.

This article has been archived. It is offered "as is" and will no longer be updated.
Bug #: 50000551 (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.
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
Consider the following scenario. You create a merge publication in Microsoft SQL Server 2005. You configure Web synchronization for the merge publication. In this scenario, a memory leak may occur every time that you synchronize a Microsoft SQL Server 2005 Mobile Edition (SQL Server Mobile) subscriber. In the W3wp.exe process, the memory usage increases, and the number of handles increases.
This problem occurs because the Replrec.dll file leaks memory and leaks handles.

Hotfix information

A supported hotfix is 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 software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if 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. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site: Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.


  • SQL Server 2005 Service Pack 1

    For more information, 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

You do not have to restart the computer after you apply 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.
File nameFile versionFile sizeDateTimePlatform
Mssqlsystemresource.ldfNot Applicable524,28804-Dec-200619:39Not Applicable
Mssqlsystemresource.mdfNot Applicable40,108,03204-Dec-200619:39Not Applicable
Sysdbupg.sqlNot Applicable218,48620-Nov-200611:26Not Applicable
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

Call stack information

You may receive a call stack that resembles one of the following.

Call stack 1

replrec!CCountdownEvent::CCountdownEvent+1areplrec!TGeneralQueue<RowDataMetadataInfo>::TGeneralQueue<RowDataMetadataInfo>+15replrec!`vector constructor iterator'+1areplrec!CDatabaseReconciler::PrepareForParallelExecution+1776replrec!CDatabaseReconciler::MoveChangesToDest+16c4replrec!CDatabaseReconciler::CoreReconcile+1462replrec!CDatabaseReconciler::Reconcile+6c9ntdll!NtQueryVirtualMemory+ckernel32!VirtualQueryEx+1dkernel32!BaseThreadStart+34

Call stack 2

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

Article ID: 929179 - Last Review: 12/09/2015 08:33:23 - Revision: 2.0

Microsoft SQL Server 2005 Standard Edition, Microsoft SQL Server 2005 Developer Edition, Microsoft SQL Server 2005 Enterprise Edition

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