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Oracle® Database Reference
11g Release 2 (11.2)

E40402-14
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V$BACKUP_DATAFILE_SUMMARY

V$BACKUP_DATAFILE_SUMMARY provides summary information for a specific criteria set, based on a backup job, a time range applicable to jobs, or a specific datafile).

Column Datatype Description
NUM_FILES_BACKED NUMBER Number of files backed up for specified criteria
NUM_DISTINCT_FILES_BACKED NUMBER Number of distinct files backed up
NUM_DISTINCT_TS_BACKED NUMBER Number of distinct tablespaces backed up
MIN_CHECKPOINT_CHANGE# NUMBER Minimum checkpoint change number of the datafile for specified criteria
MAX_CHECKPOINT_CHANGE# NUMBER Maximum checkpoint change number of the datafile for specified criteria
MIN_CHECKPOINT_TIME DATE Minimum checkpoint time of the datafile for specified criteria
MAX_CHECKPOINT_TIME DATE Maximum checkpoint time of the datafile for specified criteria
INPUT_BYTES NUMBER Total input bytes of files read
OUTPUT_BYTES NUMBER Total output bytes written
COMPRESSION_RATIO NUMBER The ratio between the total blocks in the datafile and the blocks that RMAN backed up. This is not the the ratio from the AS COMPRESSED BACKUPSET clause of the BACKUP command.
INPUT_BYTES_DISPLAY VARCHAR2(4000) Displayable format for input bytes
OUTPUT_BYTES_DISPLAY VARCHAR2(4000) Displayable format for output bytes