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Application log size

[This topic is intended to address a specific issue called out by the Exchange Server Analyzer Tool. You should apply it only to systems that have had the Exchange Server Analyzer Tool run against them and are experiencing that specific issue. The Exchange Server Analyzer Tool, available as a free download, remotely collects configuration data from each server in the topology and automatically analyzes the data. The resulting report details important configuration issues, potential problems, and nondefault product settings. By following these recommendations, you can achieve better performance, scalability, reliability, and uptime. For more information about the tool or to download the latest versions, see "Microsoft Exchange Analyzers" at http://go.microsoft.com/fwlink/?linkid=34707.]  

Topic Last Modified: 2006-11-09

The Microsoft® Exchange Server Analyzer Tool reads the following registry entry to determine the maximum size of the Application log file:

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Eventlog\Application\MaxSize

If the Exchange Server Analyzer finds that the value for MaxSize is less than 41,943,040 bytes (40 megabytes ), the Exchange Server Analyzer displays a best practice message.

By default, the maximum log size for the Application log file is 16,777,216 bytes (16384 KB) for Windows Server 2003 and 524288 (512 KB) for Windows 2000 Server. For computers that are running Exchange Server, the best practice is to set the maximum size of the Application log file at 40 MB (entered as 40960KB) or more. By increasing the Application log file size, you preserve more application events. The additional event information helps when you troubleshoot.

To increase the maximum size of the Application log
  1. Open the Event Viewer Microsoft Management Console (MMC) snap-in.

  2. Right-click the Application log and then click Properties.

  3. On the General tab, under Log size, enter 40960 or more in the Maximum log size box, and then click OK.

 
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