Knowledge Base

You receive a memory leak in nonpaged pool memory in the CcBr - Cache Manager Bitmap

Article ID: 833266

Article Last Modified on 2/22/2007

APPLIES TO

Microsoft Windows 2000 Server
Microsoft Windows 2000 Professional Edition
Microsoft Windows 2000 Advanced Server

SYMPTOMS

Your Microsoft Windows 2000-based server may start to run very slowly, and it may eventually stop responding (hang). When this problem occurs, the following event is logged in the system event log: Event ID: 2019
Description: The server was unable to allocate from the system nonpaged pool because the Pool was empty.

CAUSE

The problem occurs from a nonpaged pool memory leak in the Cache Manager Bitmap range, allocated memory block Tag CcBr. This problem may occur if the opened file contains several pages that have been modified or changed. The cache manager creates non embedded bitmaps of the file that are never released from memory.

RESOLUTION

Hotfix information

A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that this article describes. Apply it only to systems that are experiencing this specific problem.

To resolve this problem, contact Microsoft Product Support Services to obtain the hotfix. For a complete list of Microsoft Product Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:

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

Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

Prerequisites

There are no prerequisites required.

Restart requirement

You must restart your computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace any other hotfixes.

File information

The English version of this hotfix has the file attributes (or later) 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 tool in Control Panel.

   Date         Time   Version            Size    File name
   --------------------------------------------------------------
   19-Dec-2003  18:57  5.0.2195.6886      30,224  Mountmgr.sys
   28-Jan-2004  18:48  5.0.2195.6894   1,700,032  Ntkrnlmp.exe     
   28-Jan-2004  18:48  5.0.2195.6894   1,699,392  Ntkrnlpa.exe     
   28-Jan-2004  18:48  5.0.2195.6894   1,720,192  Ntkrpamp.exe     
   28-Jan-2004  18:48  5.0.2195.6894   1,677,568  Ntoskrnl.exe

STATUS

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

MORE INFORMATION

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

816915 New file naming schema for Microsoft Windows software update packages