V$BACKUP_SET

V$BACKUP_SET displays information about backup sets from the control file. A backup set record is inserted after the backup set is successfully completed.

Column	Datatype	Description
`RECID`	`NUMBER`	Backup set record ID
`STAMP`	`NUMBER`	Backup set record stamp
`SET_STAMP`	`NUMBER`	Backup set stamp. The backup set stamp and count uniquely identify the backup set. Primary key for the `V$BACKUP_SET` table, and the foreign key for the following tables: `V$BACKUP_PIECE`, `V$BACKUP_DATAFILE`, `V$BACKUP_REDOLOG`, `V$BACKUP_CORRUPTION`.
`SET_COUNT`	`NUMBER`	Backup set count. The backup set count is incremented by one every time a new backup set is started (if the backup set is never completed the number is "lost"). If the control file is re-created then the count is reset to `1`. Therefore the count must be used with the stamp to uniquely identify a backup set. Primary key for the `V$BACKUP_SET` table, and the foreign key for the following tables: `V$BACKUP_PIECE`, `V$BACKUP_DATAFILE`, `V$BACKUP_REDOLOG`, `V$BACKUP_CORRUPTION`
`BACKUP_TYPE`	`VARCHAR2(1)`	Type of files that are in this backup. If the backup contains archived redo logs, the value is `L`. If this is a datafile full backup, the value is `D`. If this is an incremental backup, the value is `I`.
`CONTROLFILE_INCLUDED`	`VARCHAR2(3)`	Set to `YES` if there is a control file included in this backup set, otherwise set to `NO`
`INCREMENTAL_LEVEL`	`NUMBER`	Location where this backup set fits into the database's backup strategy. Set to NULL for full datafile, archivelog, controlfile, and spfile backups, set to 0 for incremental level 0 datafile backups, and set to 1 for incremental level 1 datafile backups.
`PIECES`	`NUMBER`	Number of distinct backup pieces in the backup set
`START_TIME`	`DATE`	Starting time
`COMPLETION_TIME`	`DATE`	Time that this backup set completed
`ELAPSED_SECONDS`	`NUMBER`	The number of elapsed seconds
`BLOCK_SIZE`	`NUMBER`	Block size of the backup set
`INPUT_FILE_SCAN_ONLY`	`VARCHAR2(3)`	`YES` indicates no actual backup is performed, but the datafiles are read. `NO` indicates a normal backup is performed.
`KEEP`	`VARCHAR2(3)`	(`YES`/`NO`) Indicates whether or not this backup set has a retention policy that is different than the value for the configure retention policy
`KEEP_UNTIL`	`DATE`	If `KEEP_UNTIL`_TIME is specified, this is the date after which the backup becomes obsolete. If this column is null, then the backup never expires.
`KEEP_OPTIONS`	`VARCHAR2(10)`	Lists additional retention options for this backup set. Possible values are: `LOGS` - The logs need to recover this backup are kept `NOLOGS` - The logs needed to recover this backup will not be kept `BACKUP_LOGS` - An archive log backup exists to support this backup set
`MULTI_SECTION`	`VARCHAR2(3)`	Indicates whether or not this backup set is a multi-section backup. Valid values are `YES` and `NO`. A multi-section backup is a backup in which multiple backup pieces are produced independently in parallel by multiple channels.