You may experience performance issues when
you use a channel server in Microsoft Office
Communications Server 2007 R2,
These issues occur if one of
the following conditions is
- Many group chat clients try to access the group chat
services at the same time.
Note This behavior may occur during regular logon operations at
the start of a work day, or after a service outage during peak load. In
this case, the group chat clients cannot connect to the group chat servers. Any
chat rooms to which a user was connected appear disabled, and their status is
set to Connecting. A notice is displayed on the status bar, and this notice indicates
that the group chat domain is not available.
- The compliance
service is enabled.
new group chat server to
the pool to increase the capacity of the pool.
chat rooms that
are configured to send out invitations to users who
are currently not
in the chat room.
Note In this situation, the performance of each group chat
server is significantly affected. This behavior reduces the number of users that each server can support and the rate at which these users can connect to the servers. Additionally, the average time that is required to deliver messages to
other users in the chat room increases.
categories and chat rooms.
These categories and chat rooms are
that the number of access control entries that are used to define
permissions increase significantly.
Note When this behavior occurs, the stored procedure that is used
to load the state from the database times out, and the channel server does not
To resolve this issue, apply the following update:
Update for Office Communications Server 2007 R2, Group Chat Server and Group Chat Compliance Servers: July 2009
Article ID: 972944 - Last Review: July 31, 2009 - Revision: 1.1
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