How to configure the online maintenance schedule for each Exchange store database from Exchange System Manager?
1. Start Exchange System Manager. 2. Expand Administrative Groups, expand Your_Administrative_Group, and then expand Servers. 3. Expand Your_Server_Name, and then expand Your_Storage_Group. 4. Right-click the mailbox store object that you want, and then click Properties. 5. Click the Database tab. 6. In the Maintenance interval box, click an appropriate schedule. (Note: Click Customize if you want to customize the schedule.) 7. Click OK. 8. Exit Exchange System Manager.