| Oracle® Database Reference 10g Release 2 (10.2) Part Number B14237-03  | 
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V$BACKUP_ARCHIVELOG_SUMMARY provides archive log summary information based on archive logs in the backup set or on proxy copies.
| Column | Datatype | Description | 
|---|---|---|
NUM_FILES_BACKED | 
NUMBER | 
Number of files backed up | 
NUM_DISTINCT_FILES_BACKED | 
NUMBER | 
Number of distinct archive log files backed up | 
MIN_FIRST_CHANGE# | 
NUMBER | 
Lowest SCN range value | 
MAX_NEXT_CHANGE# | 
NUMBER | 
Highest SCN range value | 
MIN_FIRST_TIME | 
DATE | 
Lowest SCN range time | 
MAX_NEXT_TIME | 
DATE | 
Highest SCH range time | 
INPUT_BYTES | 
NUMBER | 
Total input bytes read | 
OUTPUT_BYTES | 
NUMBER | 
Output size of backups | 
COMPRESSION_RATIO | 
NUMBER | 
Compression ratio | 
INPUT_BYTES_DISPLAY | 
VARCHAR2(4000) | 
Displayable format for input bytes | 
OUTPUT_BYTES_DISPLAY | 
VARCHAR2(4000) | 
Displayable format for output bytes |