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Oracle® Database Backup and Recovery Reference 10g Release 2 (10.2) Part Number B14194-03 |
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# RC_BACKUP_DATAFILE_SUMMARY

`RC_BACKUP_DATAFILE_SUMMARY` provides summary information about available backups of datafiles.

This view is primarily intended to be used internally by Enterprise Manager.

Column | Datatype | Description
--- | --- | ---
`DB_KEY` | `NUMBER` | The primary key for this database.
`DB_NAME` | `VARCHAR2(8)` | The `DB_NAME` of the database incarnation to which this record belongs.
`NUM_FILES_BACKED` | `NUMBER` | Number of datafiles backed up for this value of DB_KEY and DB_NAME.
`NUM_DISTINCT_FILES_BACKED` | `NUMBER` | Number of distinct files backed up for this value of DB_KEY and DB_NAME.
`NUM_DISTINCT_TS_BACKED` | `NUMBER` | Number of distinct tablespaces backed up for this value of DB_KEY and DB_NAME.
`MIN_CHECKPOINT_CHANGE#` | `NUMBER` | Minimum checkpoint of any datafile backed up for this value of DB_KEY and DB_NAME.
`MAX_CHECKPOINT_CHANGE#` | `NUMBER` | Maximum checkpoint change number of any datafile backed up for this value of DB_KEY and DB_NAME.
`MIN_CHECKPOINT_TIME` | `DATE` | Minimum checkpoint time for any datafile backed up for this value of DB_KEY and DB_NAME.
`MAX_CHECKPOINT_TIME` | `DATE` | Maximum checkpoint time for any datafile backed up for this value of DB_KEY and DB_NAME.
`INPUT_BYTES` | `NUMBER` | Total input bytes read for all files backed up for this value of DB_KEY and DB_NAME.
`OUTPUT_BYTES` | `NUMBER` | Sum of sizes of all output pieces generated by backups for this value of DB_KEY and DB_NAME.
`COMPRESSION_RATIO` | `NUMBER` | Compression ratio across all backups.
`INPUT_BYTES_DISPLAY` | `VARCHAR2(4000)` | Same value as `INPUT_BYTES`, but converted to a user-displayable format, for example nM, nG, nT, nP.
`OUTPUT_BYTES_DISPLAY` | `VARCHAR2(4000)` | Same value as `OUTPUT_BYTES`, but converted to a user-displayable format, for example nM, nG, nT, nP.