Knowledge Base

FIX: A memory leak occurs when you call the Initialize method and the Terminate method of the SQLDistribution object in a loop in an application that you develop by using Microsoft ActiveX replication controls in SQL Server 2005

Article ID: 940719

Article Last Modified on 11/20/2007

APPLIES TO

Microsoft SQL Server 2005 Standard Edition
Microsoft SQL Server 2005 Developer Edition
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 Standard X64 Edition
Microsoft SQL Server 2005 Standard Edition for Itanium-based Systems

Bug #: 50001535 (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

When you run an application that you develop by using Microsoft ActiveX replication controls in SQL Server 2005, a memory leak occurs. This problem occurs when you call the Initialize method and the Terminate method of the SQLDistribution object in a loop in the application. If you use System Monitor (Perfmon.exe) to examine the Private Bytes counter of the Process object for the application instance, you find that the counter throughput keeps increasing.

For example, this issue may occur when you call the Initialize method and the Terminate method of the SQLDistribution object in code that resembles the following:

while (true)
{
    SQLDistribution_Object.Initialize();
    // Other calls. For example, you call some other methods of the SQLDistribution object here.
    SQLDistribution_Object.Terminate();
}

RESOLUTION

Cumulative update information

The fix for this issue was first released as a hotfix and is also available in Cumulative Update 4. For more information about how to obtain this cumulative update package for SQL Server 2005 Service Pack 2, click the following article number to view the article in the Microsoft Knowledge Base:

941450 Cumulative update package 4 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 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.

Service pack information

To resolve this problem, obtain the latest service pack for SQL Server 2005. 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

Hotfix information

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 SQL Server 2005 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 SQL Server 2005 Service Pack 1 installed.

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 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 32-bit version

File name	File version	File size	Date	Time	Platform
Bcp.exe	2005.90.2237.0	69,488	25-Jul-2007	21:54	x86
Databasemailengine.dll	9.0.2237.0	75,120	25-Jul-2007	21:54	x86
Logread.exe	2005.90.2237.0	400,752	25-Jul-2007	21:56	x86
Microsoft.analysisservices.adomdclient.dll	9.0.2237.0	546,160	25-Jul-2007	21:56	x86
Microsoft.analysisservices.deploymentengine.dll	9.0.2237.0	140,656	25-Jul-2007	21:56	x86
Microsoft.analysisservices.dll	9.0.2237.0	1,217,904	25-Jul-2007	21:56	x86
Microsoft.sqlserver.mgdsqldumper.dll	2005.90.2237.0	78,192	25-Jul-2007	21:56	x86
Microsoft.sqlserver.sqlenum.dll	9.0.2237.0	910,704	25-Jul-2007	21:56	x86
Msasxpress.dll	9.0.2237.0	24,944	25-Jul-2007	21:56	x86
Msgprox.dll	2005.90.2237.0	200,560	25-Jul-2007	21:56	x86
Msmdlocal.dll	9.0.2237.0	15,647,088	25-Jul-2007	21:56	x86
Msmdredir.dll	9.0.2237.0	3,993,968	25-Jul-2007	21:56	x86
Mssqlsystemresource.ldf	Not applicable	524,288	25-Jul-2007	16:29	Not applicable
Mssqlsystemresource.mdf	Not applicable	40,108,032	25-Jul-2007	16:29	Not applicable
Odsole70.dll	2005.90.2237.0	59,760	25-Jul-2007	21:56	x86
Qrdrsvc.exe	2005.90.2237.0	369,520	25-Jul-2007	21:56	x86
Rdistcom.dll	2005.90.2237.0	643,440	25-Jul-2007	21:56	x86
Repldp.dll	2005.90.2237.0	187,248	25-Jul-2007	21:56	x86
Replmerg.exe	2005.90.2237.0	320,880	25-Jul-2007	21:56	x86
Replprov.dll	2005.90.2237.0	550,256	25-Jul-2007	21:56	x86
Replrec.dll	2005.90.2237.0	784,752	25-Jul-2007	21:56	x86
Replsub.dll	2005.90.2237.0	407,408	25-Jul-2007	21:56	x86
Spresolv.dll	2005.90.2237.0	177,008	25-Jul-2007	21:57	x86
Sqlaccess.dll	2005.90.2237.0	350,576	25-Jul-2007	21:57	x86
Sqlagent90.exe	2005.90.2237.0	321,392	25-Jul-2007	21:57	x86
Sqlservr.exe	2005.90.2237.0	28,978,088	25-Jul-2007	21:57	x86
Sqsrvres.dll	2005.90.2237.0	66,416	25-Jul-2007	21:57	x86
Sysdbupg.sql	Not applicable	218,486	06-Jul-2007	16:39	Not applicable
Xmlsub.dll	2005.90.2237.0	195,440	25-Jul-2007	21:57	x86
Xpstar90.dll	2005.90.2237.0	295,280	25-Jul-2007	21:57	x86
Xpstar90.rll	2005.90.2237.0	155,504	25-Jul-2007	21:56	x86

SQL Server 2005 x64-based version

File name	File version	File size	Date	Time	Platform
Bcp.exe	2005.90.2237.0	88,944	25-Jul-2007	21:26	x64
Databasemailengine.dll	9.0.2237.0	75,120	25-Jul-2007	21:26	x86
Logread.exe	2005.90.2237.0	525,168	25-Jul-2007	21:26	x64
Microsoft.analysisservices.adomdclient.dll	9.0.2237.0	546,160	25-Jul-2007	21:26	x86
Microsoft.analysisservices.adomdclient.dll	9.0.2237.0	546,160	25-Jul-2007	21:56	x86
Microsoft.analysisservices.deploymentengine.dll	9.0.2237.0	140,656	25-Jul-2007	21:56	x86
Microsoft.analysisservices.dll	9.0.2237.0	1,217,904	25-Jul-2007	21:56	x86
Microsoft.sqlserver.mgdsqldumper.dll	2005.90.2237.0	94,064	25-Jul-2007	21:26	x64
Microsoft.sqlserver.mgdsqldumper.dll	2005.90.2237.0	78,192	25-Jul-2007	21:56	x86
Microsoft.sqlserver.sqlenum.dll	9.0.2237.0	877,936	25-Jul-2007	21:26	x86
Msasxpress.dll	9.0.2237.0	30,064	25-Jul-2007	21:26	x64
Msasxpress.dll	9.0.2237.0	24,944	25-Jul-2007	21:56	x86
Msgprox.dll	2005.90.2237.0	262,000	25-Jul-2007	21:26	x64
Msmdlocal.dll	9.0.2237.0	15,647,088	25-Jul-2007	21:56	x86
Msmdredir.dll	9.0.2237.0	3,993,968	25-Jul-2007	21:56	x86
Mssqlsystemresource.ldf	Not applicable	524,288	25-Jul-2007	16:29	Not applicable
Mssqlsystemresource.mdf	Not applicable	40,108,032	25-Jul-2007	16:29	Not applicable
Odsole70.dll	2005.90.2237.0	90,992	25-Jul-2007	21:27	x64
Qrdrsvc.exe	2005.90.2237.0	434,032	25-Jul-2007	21:27	x64
Rdistcom.dll	2005.90.2237.0	836,976	25-Jul-2007	21:27	x64
Repldp.dll	2005.90.2237.0	237,936	25-Jul-2007	21:27	x64
Repldp.dll	2005.90.2237.0	187,248	25-Jul-2007	21:56	x86
Replmerg.exe	2005.90.2237.0	417,648	25-Jul-2007	21:27	x64
Replprov.dll	2005.90.2237.0	747,888	25-Jul-2007	21:27	x64
Replrec.dll	2005.90.2237.0	1,010,544	25-Jul-2007	21:27	x64
Replsub.dll	2005.90.2237.0	528,240	25-Jul-2007	21:27	x64
Spresolv.dll	2005.90.2237.0	225,648	25-Jul-2007	21:27	x64
Sqlaccess.dll	2005.90.2237.0	357,744	25-Jul-2007	21:27	x86
Sqlagent90.exe	2005.90.2237.0	392,560	25-Jul-2007	21:27	x64
Sqlservr.exe	2005.90.2237.0	39,361,904	25-Jul-2007	21:27	x64
Sqsrvres.dll	2005.90.2237.0	78,192	25-Jul-2007	21:27	x64
Sysdbupg.sql	Not applicable	218,486	06-Jul-2007	16:39	Not applicable
Xmlsub.dll	2005.90.2237.0	319,856	25-Jul-2007	21:27	x64
Xpstar90.dll	2005.90.2237.0	543,600	25-Jul-2007	21:27	x64
Xpstar90.rll	2005.90.2237.0	156,016	25-Jul-2007	21:27	x64

SQL Server 2005 Itanium architecture version

File name	File version	File size	Date	Time	Platform
Bcp.exe	2005.90.2237.0	157,552	27-Jul-2007	11:06	IA-64
Databasemailengine.dll	9.0.2237.0	75,120	27-Jul-2007	11:06	x86
Logread.exe	2005.90.2237.0	1,098,096	27-Jul-2007	11:06	IA-64
Microsoft.analysisservices.adomdclient.dll	9.0.2237.0	546,160	25-Jul-2007	21:56	x86
Microsoft.analysisservices.adomdclient.dll	9.0.2237.0	546,160	27-Jul-2007	11:06	x86
Microsoft.analysisservices.deploymentengine.dll	9.0.2237.0	140,656	25-Jul-2007	21:56	x86
Microsoft.analysisservices.dll	9.0.2237.0	1,217,904	25-Jul-2007	21:56	x86
Microsoft.sqlserver.mgdsqldumper.dll	2005.90.2237.0	78,192	25-Jul-2007	21:56	x86
Microsoft.sqlserver.mgdsqldumper.dll	2005.90.2237.0	165,744	27-Jul-2007	11:06	IA-64
Microsoft.sqlserver.sqlenum.dll	9.0.2237.0	877,936	27-Jul-2007	11:06	x86
Msasxpress.dll	9.0.2237.0	24,944	25-Jul-2007	21:56	x86
Msasxpress.dll	9.0.2237.0	57,712	27-Jul-2007	11:06	IA-64
Msgprox.dll	2005.90.2237.0	545,136	27-Jul-2007	11:06	IA-64
Msmdlocal.dll	9.0.2237.0	48,724,848	27-Jul-2007	11:06	IA-64
Msmdredir.dll	9.0.2237.0	6,249,328	27-Jul-2007	11:06	IA-64
Mssqlsystemresource.ldf	Not applicable	524,288	25-Jul-2007	16:29	Not applicable
Mssqlsystemresource.mdf	Not applicable	40,108,032	25-Jul-2007	16:29	Not applicable
Odsole70.dll	2005.90.2237.0	180,080	27-Jul-2007	11:06	IA-64
Qrdrsvc.exe	2005.90.2237.0	943,984	27-Jul-2007	11:06	IA-64
Rdistcom.dll	2005.90.2237.0	1,884,016	27-Jul-2007	11:06	IA-64
Repldp.dll	2005.90.2237.0	187,248	25-Jul-2007	21:56	x86
Repldp.dll	2005.90.2237.0	511,344	27-Jul-2007	11:06	IA-64
Replmerg.exe	2005.90.2237.0	957,296	27-Jul-2007	11:06	IA-64
Replprov.dll	2005.90.2237.0	1,619,824	27-Jul-2007	11:06	IA-64
Replrec.dll	2005.90.2237.0	2,143,600	27-Jul-2007	11:06	IA-64
Replsub.dll	2005.90.2237.0	1,159,536	27-Jul-2007	11:06	IA-64
Spresolv.dll	2005.90.2237.0	498,032	27-Jul-2007	11:06	IA-64
Sqlaccess.dll	2005.90.2237.0	352,112	27-Jul-2007	11:06	x86
Sqlagent90.exe	2005.90.2237.0	1,143,664	27-Jul-2007	11:06	IA-64
Sqlservr.exe	2005.90.2237.0	72,548,208	27-Jul-2007	11:00	IA-64
Sqsrvres.dll	2005.90.2237.0	137,072	27-Jul-2007	11:00	IA-64
Sysdbupg.sql	Not applicable	218,486	06-Jul-2007	16:39	Not applicable
Xmlsub.dll	2005.90.2237.0	593,264	27-Jul-2007	11:00	IA-64
Xpstar90.dll	2005.90.2237.0	953,712	27-Jul-2007	11:00	IA-64
Xpstar90.rll	2005.90.2237.0	154,992	27-Jul-2007	11:06	IA-64

WORKAROUND

To work around this issue, call the Initialize method and the Terminate method outside the loop. For example, see the following code:

SQLDistribution_Object.Initialize();
while (true)
{
    // Other calls. For example, you call some other methods of the SQLDistribution object here.
}
SQLDistribution_Object.Terminate();

STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section. This problem was first corrected in SQL Server 2005 Service Pack 2.

MORE INFORMATION

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

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 The SQL Server 2005 builds that were released 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 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: