DB_KEY | 
NUMBER | 
The primary key for the target database. Use this column to join with almost any other catalog view. | 
DBINC_KEY | 
NUMBER | 
The primary key for the incarnation of the target database. Use this column to join with RC_DATABASE_INCARNATION. | 
DB_NAME | 
VARCHAR2(8) | 
The DB_NAME of the database incarnation to which this record belongs. | 
RECID | 
NUMBER | 
The record identifier for the offline range from V$OFFLINE_RANGE. RECID and STAMP form a concatenated primary key that uniquely identifies this record in the target database control file. | 
STAMP | 
NUMBER | 
The stamp for the offline range from V$OFFLINE_RANGE. RECID and STAMP form a concatenated primary key that uniquely identifies this record in the target database control file. | 
FILE# | 
NUMBER | 
The absolute file number of the datafile. | 
CREATION_CHANGE# | 
NUMBER | 
The SCN at datafile creation. | 
OFFLINE_CHANGE# | 
NUMBER | 
The SCN taken when the datafile was taken offline. | 
ONLINE_CHANGE# | 
NUMBER | 
The online checkpoint SCN. | 
ONLINE_TIME | 
DATE | 
The online checkpoint time. | 
CF_CREATE_TIME | 
DATE | 
The time of control file creation. |