| 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_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. | 
| DB_ID | NUMBER | The DBID of the database incarnation to which this record belongs. | 
| BP_KEY | NUMBER | The primary key for the backup piece in the recovery catalog. If you issue the LISTcommand while RMAN is connected to the recovery catalog, then this value appears in theKEYcolumn of the output. | 
| RECID | NUMBER | The backup piece RECIDfromRC_BACKUP_PIECE.RECIDandSTAMPform a concatenated primary key that uniquely identifies this record in the target database control file. | 
| STAMP | NUMBER | The backup piece stamp propagated from V$BACKUP_PIECE.RECIDandSTAMPform a concatenated primary key that uniquely identifies this record in the target database control file. | 
| BS_KEY | NUMBER | The primary key of the backup set to which this record belongs in the recovery catalog. Use this column to join with RC_BACKUP_SETorRC_BACKUP_PIECE. | 
| SET_STAMP | NUMBER | The SET_STAMPvalue fromV$BACKUP_SET.SET_STAMPandSET_COUNTform 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_COUNTvalue fromV$BACKUP_SET.SET_STAMPandSET_COUNTform a concatenated key that uniquely identifies the backup set to which this record belongs in the target database control file. | 
| BACKUP_TYPE | VARCHAR2(1) | The type of backup. Possible values are Dfor data file or control file backups,Ifor incremental backups, andLfor archived log file backups. | 
| INCREMENTAL_LEVEL | NUMBER | For incremental backups, indicates the level of incremental backup. Possible values are NULL(for full backups),0or1. | 
| PIECE# | NUMBER | The number of the backup piece. The first piece has the value of 1. | 
| COPY# | NUMBER | Indicates the copy number for backup pieces created with duplex enabled. 1 if the backup piece is not duplexed. | 
| DEVICE_TYPE | VARCHAR2(255) | Type of the device on which the backup piece resides. Set to DISKfor backup sets on disk. | 
| HANDLE | VARCHAR2(1024) | The file name of the backup piece. | 
| COMMENTS | VARCHAR2(255) | Comments about the backup piece. | 
| MEDIA | VARCHAR2(80) | A comment that contains further information about the media manager that created this backup. | 
| MEDIA_POOL | NUMBER | The number of the media pool in which the backup is stored. 0indicates no media pool. | 
| CONCUR | VARCHAR2(3) | Specifies whether backup media supports concurrent access: YESorNO. | 
| TAG | VARCHAR2(32) | The tag associated with this backup piece. | 
| START_TIME | DATE | The time when RMAN started to write the backup piece. | 
| COMPLETION_TIME | DATE | The time when the backup piece was completed. | 
| ELAPSED_SECONDS | NUMBER | The duration of the creation of the backup piece. | 
| STATUS | VARCHAR2(1) | The status of the backup piece: Afor backup pieces that areAVAILABLE. (The value is alwaysA, because this view shows only available backup pieces.) | 
| BYTES | NUMBER | The size of the backup piece in bytes. | 
| IS_RECOVERY_DEST_FILE | VARCHAR2(3) | YESif this backup piece is located in the fast recovery area.NOotherwise. | 
| RSR_KEY | NUMBER | Unique key for the row in RC_RMAN_STATUScorresponding to the job that created this backup piece. | 
| COMPRESSED | VARCHAR2(3) | YESif this backup piece is compressed.NOotherwise. | 
| SITE_KEY | NUMBER | Primary key of the Data Guard database associated with this file. Each database in a Data Guard environment has a unique SITE_KEYvalue.You can useSITE_KEYin a join with theRC_SITEview to obtain theDB_UNIQUE_NAMEof the database. | 
| ENCRYPTED | VARCHAR2(3) | Indicates whether the backup piece is encrypted ( YES) or not (NO). | 
| BACKED_BY_OSB | VARCHAR2(3) | Indicates whether the backup piece is backed up to Oracle Secure Backup ( YES) or not (NO). | 
| PIECES_PER_SET | NUMBER | Number of backup pieces in the backup set containing this backup piece. | 
| SIZE_BYTES_DISPLAY | VARCHAR2(4000) | Same value as BYTES, but converted to a user-displayable format, for example, 798.01M or 5.25G. |