| Oracle® Database Reference 11g Release 2 (11.2) Part Number E10820-03 | 
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V$BACKUP_DATAFILE_DETAILS contains information about restorable datafiles. It will include all datafiles backed in the backup set, image copies, and proxy copies.
| Column | Datatype | Description | 
|---|---|---|
| BTYPE | CHAR(9) | Backup type container. Possible values are: BACKUPSET,IMAGECOPY,PROXYCOPY. | 
| BTYPE_KEY | NUMBER | Unique identifier for the backup type. For BACKUPSET, it isBS_KEY. | 
| SESSION_KEY | NUMBER | Session identifier | 
| SESSION_RECID | NUMBER | Session record ID | 
| SESSION_STAMP | NUMBER | Session stamp | 
| ID1 | NUMBER | If BACKUPSET, it containsSET_STAMP.If  | 
| ID2 | NUMBER | If BACKUPSET, it containsSET_COUNT.If  | 
| FILE# | NUMBER | File number | 
| CREATION_CHANGE# | NUMBER | File creation change SCN | 
| CREATION_TIME | DATE | File creation time | 
| RESETLOGS_CHANGE# | NUMBER | Resetlogs change SCN | 
| RESETLOGS_TIME | DATE | Resetlogs change time | 
| INCREMENTAL_LEVEL | NUMBER | Incremental level | 
| INCREMENTAL_CHANGE# | NUMBER | Incremental change SCN | 
| CHECKPOINT_CHANGE# | NUMBER | Checkpoint change SCN | 
| CHECKPOINT_TIME | DATE | Checkpoint change time | 
| MARKED_CORRUPT | NUMBER | Number of blocks marked corrupt | 
| FILESIZE | NUMBER | File size, in bytes | 
| COMPRESSION_RATIO | NUMBER | Compression ratio | 
| TS# | NUMBER | Tablespace number | 
| TSNAME | VARCHAR2(30) | Tablespace name | 
| FILESIZE_DISPLAY | VARCHAR2(4000) | Same value as the FILESIZEcolumn, but converted to a user-displayable format, for examplenM,nG,nT,nP, and so on |