Microsoft KB Archive/260300

= XADM: Online Defragmentation Stops with Event ID 183 =

Article ID: 260300

Article Last Modified on 10/27/2006

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APPLIES TO


 * Microsoft Exchange Server 5.5 Standard Edition
 * Microsoft Exchange Server 5.0 Standard Edition

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This article was previously published under Q260300



SUMMARY
When you view the application log of a Microsoft Exchange Server, the user may receive the following event:

Event ID: 183

Source: ESE97

Type: Information

Category: Online Defragmentation

Description: MSExchangeIS ((198)) Online defragmentation of database 'C:\exchsrvr\MDBDATA\PRIV.EDB' was interrupted and terminated. The next time online defragmentation is started on this database, it will resume from the point of interruption.



MORE INFORMATION
Exchange Server online defragmentation against the information store databases starts immediately after information store maintenance tasks have been completed. By default, the online defragmentation process runs for a minimum of fifteen minutes and it only runs for up to one hour after the information store maintenance scheduled window time.

This is a low priority task, and if the task is interrupted by another task that requires access to the database (commonly an online backup), the server logs event 183.

The user may want to schedule the Exchange Server Information Store (IS) Maintenance and the backups for different times during off-peak hours. This allows more time for the online defragmentation to take place. To change the IS Maintenance schedule:
 * 1) Start the Exchange Administrator program.
 * 2) Expand the left pane until you see the server name of the Exchange server on which you want to change the IS Maintenance schedule.
 * 3) Click the server name, and then click Properties on the File menu.
 * 4) On the IS Maintenance tab, click the schedule that you want, click Apply, and then click OK.

For additional information about IS Maintenance, click the article numbers below to view the articles in the Microsoft Knowledge Base:

159196 XADM: Tasks Controlled by the IS Maintenance Schedule

159306 XADM: IS Maintenance Tasks Not on IS Schedule

For additional information about configuring the minimum runtime for online defragmentation, click the article number below to view the article in the Microsoft Knowledge Base:

244524 XADM: How to Configure the Exchange Online Defragmentation Time

Keywords: kbhowto KB260300

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