| BTYPE | CHAR(9) | The backup type container, which can be BACKUPSET,IMAGECOPY, orPROXYCOPY. | 
| BTYPE_KEY | NUMBER | Unique identifier for the backup type. If BTYPEisBACKUPSET, then this value is theBS_KEYvalue for the backup set. IfBTYPEisIMAGECOPY, then this value is the value ofCOPY_KEYfor the copy. | 
| SESSION_KEY | NUMBER | Session identifier. Use in joins with RC_RMAN_OUTPUTandRC_RMAN_BACKUP_JOB_DETAILS. | 
| SESSION_RECID | NUMBER | Together with SESSION_STAMP, uniquely identifies output for this backup job fromRC_RMAN_OUTPUT. | 
| SESSION_STAMP | NUMBER | Together with SESSION_RECID, uniquely identifies output for this backup job fromRC_RMAN_OUTPUT. | 
| DB_KEY | NUMBER | The primary key for this database in the recovery catalog. Use this column to join with almost any other catalog view. | 
| DB_NAME | VARCHAR2(8) | The DB_NAMEof the database incarnation to which this record belongs. | 
| ID1 | NUMBER | For backups taken as backup sets, this column contains SET_STAMP. For proxy copy or image copy backups, this column contains theRECIDfrom the control file. | 
| ID2 | NUMBER | For backups taken as backup sets, this column contains SET_COUNT. For proxy copy or image copy backups, this column containsSTAMP. | 
| FILE# | NUMBER | The number of this data file. | 
| CREATION_CHANGE# | NUMBER | The checkpoint SCN when this data file was created. | 
| CREATION_TIME | DATE | The time at which this data file was created. | 
| RESETLOGS_CHANGE# | NUMBER | The checkpoint SCN of the most recent RESETLOGSoperation affecting this data file. | 
| RESETLOGS_TIME | DATE | The time of the most recent RESETLOGSoperation affecting this data file | 
| INCREMENTAL_LEVEL | NUMBER | For incremental backups, the level of the incremental backup (0 or 1). Otherwise, NULL. | 
| INCREMENTAL_CHANGE# | NUMBER | For incremental backups, the incremental backup SCN. Otherwise, NULL. | 
| CHECKPOINT_CHANGE# | NUMBER | The current checkpoint SCN for the data file when it was backed up. | 
| CHECKPOINT_TIME | DATE | The time corresponding to the current checkpoint SCN for the data file when it was backed up. | 
| MARKED_CORRUPT | NUMBER | Number of data file blocks marked corrupt. | 
| FILESIZE | NUMBER | The size of the data file when it was backed up. | 
| COMPRESSION_RATIO | NUMBER | Compression ratio for this backup. | 
| TS# | NUMBER | Tablespace number. | 
| TSNAME | VARCHAR2(30) | The name of the tablespace containing this data file. | 
| FILESIZE_DISPLAY | VARCHAR2(4000) | Same value as FILESIZE, but converted to a user-displayable format, for example, 798.01M or 5.25G. |