DOCUMENT:Q260300  25-JUN-2000  [exchange]
TITLE   :XADM: Online Defragmentation Stops with Event ID 183
PRODUCT :Microsoft Exchange
PROD/VER:winnt:5.0,5.5
OPER/SYS:
KEYWORDS:exc5 exc55

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The information in this article applies to:

 - Microsoft Exchange Server, versions 5.5, 5.0 
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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:

   Q159196 XADM: Tasks Controlled by the IS Maintenance Schedule

   Q159306 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:

   Q244524 XADM: How to Configure the Exchange Online Defragmentation Time

Additional query words:

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Keywords          : exc5 exc55 
Technology        : kbExchangeSearch kbExchange500 kbExchange550 kbZNotKeyword2
Version           : winnt:5.0,5.5
Issue type        : kbhowto

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