Activating Automatic Log Backup 
You should activate automatic log backups (autosave log mechanism) to regularly back up the log entries. Use the DBA Planning Calendar to do this.
Prerequisites
Setting Up and Using the DBA Planning Calendar
Define appropriate backup templates. Specify a file as the data carrier.
Procedure
Follow the scheduling concept.
Open the DBA Planning Calendar.
To activate automatic log backups, proceed as described in Scheduling an Action. Use the following actions:
Activate Automatic Log Backups: If automatic log backup is activated, the database system automatically backs up log entries from a segment of the log area to a backup file as soon as the segment is full. If automatic log backup is activated, the database system automatically backs up log entries from a segment of the log area to a backup file as soon as the segment is full.
Deactivate Automatic Log Backups: If you do not activate automatic log backups, check that there is enough memory in the log area (Monitoring the Log Area) at regular intervals, and backup the log entries immediately, if necessary (Scheduling Interactive Log Backup, Starting an Action Immediately).
Note
Make sure the data media are inserted and ready.
Result
Automatic log backup activation is scheduled. Check the schedules of the automatic log backups.
Note
Check regularly that automatic log backups are activated.
If no more space is available in the backup files, the autosave log mechanism stops. Check space availability regularly to ensure the backup files can always be written.
Archive older backup files regularly to another data carrier. If you are using a backup tool from another provider, you can automate this procedure. Follow the procedure described in Archiving Backup Files.
Caution
If automatic log backups are activated, a log segment is backed up when it becomes full. Since you cannot predict when this will happen, make sure that there is always enough disk space for the log segments. Archive backup files regularly to other backup devices, so that you can delete them from the disk.
If no log segments are configured (log segment size = 0), the system defines one-third of the size of the entire log area as the log segment size.
Check the results of the log backups in the DBA Planning Calendar, as described in Displaying Actions. Check the log backup results and the archiving of backup files in the DBA History display. Also use the Log Area display in the Database Alert Monitor or liveCache Alert Monitor.
More Information
Database Administration, Backing Up Log Entries, Archiving Backup Files
Database Administration in CCMS: SAP liveCache Technology, Backing Up liveCache: Background Processing