Microsoft KB Archive/196456

= OL2000: (CW) Improving Public Folder Access Performance =

Article ID: 196456

Article Last Modified on 9/29/2003

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APPLIES TO


 * Microsoft Outlook 2000 Standard Edition

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This article was previously published under Q196456



NOTE: These procedures only apply if you have installed Outlook with the Corporate Workgroup/Other option. This option allows you to use Messaging Application Programming Interface (MAPI) services. To determine your installation type, on the Help Menu, click About Microsoft Outlook. In About Microsoft Outlook, you should see "Corporate" if you have the Corporate Workgroup installation.



SUMMARY
Accessing Public Folders with many items on a Microsoft Exchange Server with Microsoft Outlook is sometimes slow. This article suggests how to improve the performance of Public Folder access.



MORE INFORMATION
Whenever a user creates a new View or changes the sort order for a given public folder, Microsoft Exchange Server creates indices to the folder. Creating a new view for the first time can take several minutes in a folder with a large number of items.

Because many indices can be created by many users, they are not kept permanently. Instead, the server maintains a temporary cache of views and indices. By default, the system deletes those not used for eight days. If your view is "aged out" due to lack of use, the next time you open it, you are likely to have to wait while the system creates a new index.

To improve performance of Public Folders, try the following:


 * If possible, create the Folder Views you will need when the number of items in the folder is small. This reduces the time to create the original index.
 * Use your views to access the Public Folders at least as frequently as the default aging parameter. If the aging value is the eight-day default, access them at least weekly.
 * If feasible, have the Server Administrator increase the view-aging parameters in the registry. See the References section for instructions.

NOTE: These improvement techniques do not apply when running off-line, because then the multiple server indices are not available to you. The Outlook client only supports one index at a time, so changing views off-line may be slow with large item volumes.

