Change the size of the message state
database
The BlackBerry Messaging Agent uses a message state database to manage the mapping between email messages on
BlackBerry devices and email messages on the Microsoft Exchange Server. The size of the message state database defines
how many recent email messages are kept in this mapping for each user. Increasing the size of the message state
database might decrease the message load on the Microsoft Exchange Server because the BlackBerry Messaging Agent
can use the local message state database to search for messages instead of communicating with the Microsoft Exchange
Server. Increasing the size of the message state database also increases how much memory the BlackBerry Messaging
Agent uses.
If you change the size of the message state database, your organization's environment might experience a serious
performance impact.
1. In the BlackBerry Administration Service, on the
Servers and components menu, expand BlackBerry Solution
topology > BlackBerry Domain > Component view > Email
.
2. Click the instance that you want to change.
3. Click
Edit instance.
4. On the
Messaging tab, in the Performance section, in the Message state database size field, type a value between 0
and 1000, that specifies the number of messages that the BlackBerry Enterprise Server keeps in the mapping for
each user.
The default value is 100 messages.
5. Click
Save all.
