| DB_NAME | VARCHAR2(8) | The DB_NAMEof the database incarnation to which this record belongs. | 
| DB_KEY | NUMBER | The primary key for this database in the recovery catalog. Use this column to join with almost any other catalog view. | 
| NUM_COPIES | NUMBER | Total number of image copy backups. | 
| NUM_DISTINCT_COPIES | NUMBER | Number of distinct image copy backups. | 
| MIN_CHECKPOINT_CHANGE# | NUMBER | Minimum checkpoint SCN among all image copy backups described in this view. | 
| MAX_CHECKPOINT_CHANGE# | NUMBER | Maximum checkpoint SCN among all image copy backups described in this view. | 
| MIN_CHECKPOINT_TIME | DATE | Earliest checkpoint time among all copies described in this view. | 
| MAX_CHECKPOINT_TIME | DATE | Latest checkpoint time among all copies described in this view. | 
| OUTPUT_BYTES | NUMBER | Sum of sizes of all data file and control file copies. | 
| OUTPUT_BYTES_DISPLAY | VARCHAR2(4000) | Same value as OUTPUT_BYTES, but converted to a user-displayable format, for example, 798.01M or 5.25G. |