Certain operations on Logger, such as database defragmentation, extending the storage volume size, adding storage groups, and adding additional schema fields, require that Logger be in a maintenance state—a state in which operations related to data on the Logger are not running. Maintenance mode enables you to place the Logger in such a state. When a Logger is in maintenance mode:
Tip: You cannot place a Logger in maintenance mode directly. A Logger can enter maintenance mode only to perform an operation that requires it to be in that mode.
Caution: Do not restart/reboot a Logger in Maintenance Mode from the command line. Use the restart link on the Maintenance page.
Logger users who will be performing operations that require it to be in maintenance mode must have the “Enable Maintenance Mode” privilege checked (System Admin > User Management > Groups tab > System Admin Group). See Users/Groups for more information on Logger user rights and how to administer them. When a Logger is in maintenance mode, users with the “Enable Maintenance Mode” privilege see a message stating Logger has been placed in maintenance mode.
For all other users, the log-in screen displays a message Logger has been placed in maintenance mode by another user.