V$BACKUP_SPFILE_SUMMARY provides summary information for input SP file, based on either a backup job or time range applicable to jobs.

Column Datatype Description
NUM_FILES_BACKED NUMBER Number of files backed up
NUM_DISTINCT_FILES_BACKED NUMBER Number of distinct SP files backed up (with modification timestamp)
MIN_MODIFICATION_TIME DATE Minimum modification time
MAX_MODIFICATION_TIME DATE Maximum modification time
INPUT_BYTES NUMBER Total input bytes for all SP files backed up
INPUT_BYTES_DISPLAY VARCHAR2(4000) Displayable format for all input bytes