ASA Database Administration Guide
Backup and Data Recovery
Configuring your database for data protection
You can use a live backup to provide a redundant copy of the transaction log that is available for restart of your system on a secondary machine in case the machine running the database server becomes unusable.
A live backup runs continuously, terminating only if the server shuts down. If you suffer a system failure, the backed up transaction log can be used for a rapid restart of the system. However, depending on the load that the server is processing, the live backup may lag behind and may not contain all committed transactions.
For more information on making a live backup, see Making a live backup.
For information on restarting database using a live backup, see Recovering from a live backup.