Q289120: XCLN: Exchange Server Performance Problems Caused by Clients
Article: Q289120
Product(s): Microsoft Exchange
Version(s): 5.5
Operating System(s):
Keyword(s): exc55
Last Modified: 18-APR-2001
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The information in this article applies to:
- Microsoft Exchange Server, version 5.5
- Microsoft Exchange 2000 Server
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SYMPTOMS
========
General Exchange Server performance and stability problems may be caused if a
client application opens a large numbers of messages at once. Some add-on
services and applications may inadvertently do this while performing their
functions.
Symptoms may be non-specific and can include slow performance on the server or
unexpected program exits by clients. You may also observe Out-of-Memory errors
on the Exchange Server computer. Examination of Exchange Server-related errors
in the server Application log may show errors with the following IDs in the
event descriptions:
- 0x800700E
- 1014
- CdoE_NOT_ENOUGH_MEMORY
RESOLUTION
==========
For Exchange Server 5.5 and earlier, you must address the problem from the
client. Exchange 2000 provides two server-side options for dealing with this
problem:
- Limit the number of open messages for each client logon.
For additional information, click the article number below to view the article in
the Microsoft Knowledge Base:
Q289109 XADM: Limit the Number of Messages Opened per MAPI Logon
- If you find that a particular client version is problematic in your
environment, you may prevent all clients of this version from connecting at
all to the Exchange 2000 server.
For additional information, click the article number below to view the article in
the Microsoft Knowledge Base:
Q289115 XADM: How to Disable MAPI Clients at a Server Level Based on Client
MAPI Provider Version
STATUS
======
Microsoft has confirmed this to be a problem in Microsoft Exchange 2000 Server.
Microsoft has confirmed this to be a problem in Microsoft Exchange 5.5 Server.
MORE INFORMATION
================
You can view the number of open messages for each client logon in the Exchange
Server 5.5 Administrator program or in Exchange System Manager for Exchange
2000. A client logon is suspect if it shows more than 1,000 messages open for
more than a few minutes at a time.
To check the open message count:
1. Start the Administrator program for Microsoft Exchange Server 5.5, or
Exchange System Manager for Exchange 2000.
2. Expand the mailbox database object, and then click Logons.
NOTE: In Exchange Server 5.5, this database is always the private information
store. In Exchange 2000, the database name is set by the administrator.
3. On the View menu, click Columns, and then add "Open Messages" to the
displayed columns.
Note that the column display does not refresh automatically, and values in it are
updated at approximately one minute intervals.
Additional query words:
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Keywords : exc55
Technology : kbExchangeSearch kbExchange550 kbZNotKeyword2 kbExchange2000Search kbExchange2000Serv
Version : :5.5
Issue type : kbinfo
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