Automatic extent archiving is performed by a daemon started by the database broker. The daemon operates in two modes: timed and on-demand. Operating in timed mode, an AI extent switch is performed at the specified interval, in addition to an implicit switch when an extent fills. The minimum time interval is 120 seconds, and the maximum interval is 86400 seconds (24 hours.) Operating in on-demand mode, extents are only switched when they become FULL. In either mode, FULL extents are archived every five seconds. When operating the AI File Management utility daemon, you must have sufficient AI extents to keep at least one extent available for writing at all times.