RC_BACKUP_DATAFILE

This view lists information about datafiles in backup sets. It corresponds to the V$BACKUP_DATAFILE view. A backup datafile is uniquely identified by BDF_KEY.

Column	Datatype	Description
`DB_KEY`	`NUMBER`	The primary key for this database in the recovery catalog. Use this column to form a join with almost any other catalog view.
`DBINC_KEY`	`NUMBER`	The primary key for the incarnation of the target database. Use this column to form a join with `RC_DATABASE_INCARNATION`.
`DB_NAME`	`VARCHAR2(8)`	The `DB_NAME` of the database incarnation to which this record belongs.
`BDF_KEY`	`NUMBER`	The primary key of the datafile backup in the recovery catalog. If you issue the `LIST` command while connected to the recovery catalog, then this value appears in the `KEY` column of the output.
`RECID`	`NUMBER`	The backup datafile `RECID` from `V$BACKUP_DATAFILE`. `RECID` and `STAMP` form a concatenated primary key that uniquely identifies this record in the target database control file.
`STAMP`	`NUMBER`	The backup datafile stamp from `V$BACKUP_DATAFILE`. `RECID` and `STAMP` form a concatenated primary key that uniquely identifies this record in the target database control file.
`BS_KEY`	`NUMBER`	The primary key of the backup set to which this record belongs in the recovery catalog. Use this column to form a join with `RC_BACKUP_SET` or `RC_BACKUP_PIECE`.
`SET_STAMP`	`NUMBER`	The `SET_STAMP` value from `V$BACKUP_SET`. `SET_STAMP` and `SET_COUNT` form a concatenated key that uniquely identifies the backup set to which this record belongs in the target database control file.
`SET_COUNT`	`NUMBER`	The `SET_COUNT` value from `V$BACKUP_SET`. `SET_STAMP` and `SET_COUNT` form a concatenated key that uniquely identifies the backup set to which this record belongs in the target database control file.
`BS_RECID`	`NUMBER`	The `RECID` from `V$BACKUP_SET`.
`BS_STAMP`	`NUMBER`	The `STAMP` from `V$BACKUP_SET`.
`BACKUP_TYPE`	`VARCHAR2(1)`	The type of the backup: `D` (full or level 0 incremental) or `I` (incremental level 1).
`INCREMENTAL_LEVEL`	`NUMBER`	The level of the incremental backup: `NULL`, 0, or 1.
`COMPLETION_TIME`	`DATE`	The completion time of the backup.
`FILE#`	`NUMBER`	The absolute file number of the datafile. Note that when `FILE#`=0, the record refers to the control file. See the note following this table for special semantics of other columns when `FILE#`=0.
`CREATION_CHANGE#`	`NUMBER`	The creation SCN of the datafile.
`RESETLOGS_CHANGE#`	`NUMBER`	The `SCN` of the most recent `RESETLOGS` in the datafile header.
`RESETLOGS_TIME`	`DATE`	The time stamp of the most recent `RESETLOGS` in the datafile header.
`INCREMENTAL_CHANGE#`	`NUMBER`	The SCN that determines whether a block will be included in the incremental backup. A block is only included if the SCN in the block header is greater than or equal to `INCREMENTAL_CHANGE#`. The range of redo covered by the incremental backup begins with `INCREMENTAL_CHANGE#` and ends with `CHECKPOINT_CHANGE#`.
`CHECKPOINT_CHANGE#`	`NUMBER`	The checkpoint SCN of this datafile in this backup set.
`CHECKPOINT_TIME`	`DATE`	The time associated with `CHECKPOINT_CHANGE#`.
`ABSOLUTE_FUZZY_CHANGE#`	`NUMBER`	The absolute fuzzy SCN. See the note following this table for special semantics when `FILE#`=0.
`DATAFILE_BLOCKS`	`NUMBER`	The number of data blocks in the datafile.
`BLOCKS`	`NUMBER`	The number of data blocks written to the backup. This value is often less than `DATAFILE_BLOCKS` because for full backups, blocks that have never been used are not included in the backup, and for incremental backups, blocks that have not changed are not included in the backup. This value is never greater than `DATAFILE_BLOCKS`.
`BLOCK_SIZE`	`NUMBER`	The size of the data blocks in bytes.
`STATUS`	`VARCHAR2(1)`	The status of the backup set: `A` (all pieces available), `D` (all pieces deleted), `O` (some pieces are available but others are not, so the backup set is unusable).
`BS_LEVEL`	`NUMBER`	The incremental level (`NULL,` 0, or 1) specified when this backup was created. This value can be different from the `INCREMENTAL_LEVEL` column because if you run, for example, a level 1 incremental backup, but no previous level 0 backup exists for some files, a level 0 backup is automatically taken for these files. In this case, `BS_LEVEL` is 1 and `INCREMENTAL_LEVEL` is 0.
`PIECES`	`NUMBER`	The number of backup pieces in the backup set that contains this backup datafile.
`BLOCKS_READ`	`NUMBER`	Number of blocks that were scanned while taking this backup. If this was an incremental backup, and change tracking was used to optimize the backup, then the value of this column will be smaller than `DATAFILE_BLOCKS`. Otherwise, the value of this column will be the same as `DATAFILE_BLOCKS`. Even when change tracking data is used, the value of this column may be larger than `BLOCKS`, because the data read by change tracking is further refined during the process of creating an incremental backup.
`CREATION_TIME`	`DATE`	Creation timestamp of the datafile.
`MARKED_CORRUPT`	`NUMBER`	Number of blocks marked corrupt.
`USED_CHANGE_TRACKING`	`VARCHAR2(3)`	Whether change tracking data was used to accelerate this incremental backup (`YES`) or was not used (`NO`).
`USED_OPTIMIZATION`	`VARCHAR2(3)`	Whether backup optimization was applied (`YES`) or not (`NO`).
`PCT_NOTREAD`	`NUMBER`	The percentage of the file that was skipped during this backup. For incremental backups, this value indicates the efficiency of the block change tracking file.
`FOREIGN_DBID`	`NUMBER`	Foreign DBID of the database from which this datafile was transported. The value is `0` if the file backed up is not a foreign database file.
`PLUGGED_READONLY`	`VARCHAR2(3)`	`YES` if this is a backup of a transported read-only foreign file; otherwise `NO`.
`PLUGIN_CHANGE#`	`NUMBER`	SCN at which the foreign datafile was transported into the database. The value is `0` if this file is not a foreign database file.
`PLUGIN_RESETLOGS_CHANGE#`	`NUMBER`	The SCN of the `RESETLOGS` operation for the incarnation into which this foreign file was transported. The value is `0` if this file is not a foreign database file.
`PLUGIN_RESETLOGS_TIME`	`DATE`	The time of the `RESETLOGS` operation for the incarnation into which this foreign file was transported. The value is `0` if this file is not a foreign database file.
`SECTION_SIZE`	`NUMBER`	Specifies the number of blocks in each section of a multisection backup. Value is 0 for whole file backups.