The completion of database backups is relevant in the following situations:
A backup has terminated and you do not want to repeat it. Using the BRBACKUP option -f|-fillup you can simply continue the backup. BRBACKUP automatically determines the files that are still to be backed up: target set (defined with the parameter backup_mode or the option -m) minus set backed up (BRBRACKUP detailed log). The completion of a backup can also refer to several terminated backups. In this case a new set of files to be backed up can be specified, differing from the original target volume set.
You are making partial database backups and want to ensure, or monitor, that these will produce a complete backup. This is especially important for large databases, for which it is recommended to spread the backup over several days (for example, a week), in order to reduce the volume of data to be backed up every day. At the end of the week, to ensure that you have a complete backup, complete the partial backups on the last day of the cycle with the option -f|-fill. As above BRBACKUP automatically determines the files to be backed up.
brbackup -f b<timestamp>.pft: the backup with the log name b<timestamp>.pft is completed
brbackup -f last: the last executed backup is completed
brbackup -f 1: the current day's backup is completed
brbackup -f 7: the backups of the last seven days (including the current day) are completed, as in the graphic above.