Long-running MAPI bulk operation
Topic Last Modified: 2007-01-23
The Microsoft® Exchange Server Analyzer Tool uses the Exchange Server User Monitor (ExMon) tool to determine whether user MAPI operations are taking longer than should reasonably be expected on a healthy Exchange server.
As part of its analysis, the Exchange Server Analyzer reviews the ExMon data for user-issued MAPI Bulk operations that have taken longer than 30 seconds to complete.
MAPI Bulk operations are operations that act on more than one object and are typically expensive (require many I/Os).
If the Exchange Server Analyzer determines that a user has had one or more MAPI Bulk operations take longer than 30 seconds, the Exchange Server Analyzer displays an error.
MAPI Bulk operations taking longer than 30 seconds may not always be a problem. If the user is acting on (copying, deleting, setting attribute flags, and so on) a thousand or more messages at one time, it could cause the MAPI Bulk operations to take longer than normal.
If the user or users are experiencing frequent delays, or delays that adversely affect their messaging experience, these MAPI Bulk operation delays should be investigated further to make sure they are not symptomatic of more serious latency issues such as resource bottlenecks or nested dependencies.
To address this error:
Consider using the ExMon tool to capture a larger data sample for the Exchange Server Analyzer to review. Because of the large volume of data generated by Exchange, we recommended that the data collection sample be kept to 30 minutes or less.
For more information, see the following Exchange Server resources:
Performance and Scalability Guide for Exchange Server 2003 (http://go.microsoft.com/fwlink/?LinkId=47576)
Troubleshooting Microsoft Exchange Server 2003 Performance (http://go.microsoft.com/fwlink/?LinkId=47588)
"Exchange Server 2003 Performance: 10 Things to Think About" (http://go.microsoft.com/fwlink/?LinkId=56460)
Microsoft Knowledge Base article 905803, "Outlook users experience poor performance when they work with a folder that contains many items on a server that is running Exchange Server 2003 or Exchange 2000 Server" (http://go.microsoft.com/fwlink/?linkid=3052&kbid=905803)