| 
 
DB_KEY   | 
 
NUMBER   | 
 
NOT NULL   | 
 
The primary key for the target database. Use this column to form a join with almost any other catalog view.   | 
| 
 
DBINC_KEY   | 
 
NUMBER   | 
 
NOT NULL   | 
 
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)   | 
 
NOT NULL   | 
 
The DB_NAME of the database incarnation to which this record belongs.   | 
| 
 
RECID   | 
 
NUMBER   | 
 
NOT NULL   | 
 
The redo log history RECID from V$LOG_HISTORY. RECID and STAMP form a concatenated primary key that uniquely identifies this record in the target database control file.   | 
| 
 
STAMP   | 
 
NUMBER   | 
 
NOT NULL   | 
 
The redo log history stamp from V$LOG_HISTORY. RECID and STAMP form a concatenated primary key that uniquely identifies this record in the target database control file.   | 
| 
 
THREAD#   | 
 
NUMBER   | 
 
NOT NULL   | 
 
The thread number of the online redo log.   | 
| 
 
SEQUENCE#   | 
 
NUMBER   | 
 
NOT NULL   | 
 
The log sequence number of the redo log.   | 
| 
 
FIRST_CHANGE#   | 
 
NUMBER   | 
 
NOT NULL   | 
 
The SCN generated when switching into the redo log.   | 
| 
 
FIRST_TIME   | 
 
DATE   | 
 
NOT NULL   | 
 
The timestamp when switching into the redo log.   | 
| 
 
NEXT_CHANGE#   | 
 
NUMBER   | 
 
NOT NULL   | 
 
The first SCN of the next redo log in the thread.   | 
| 
 
CLEARED   | 
 
VARCHAR2(3)   | 
 
   | 
 
'?' if the redo log was cleared with the ALTER DATABASE CLEAR LOGFILE statement; otherwise, NULL. This statement allows a log to be dropped without archiving it first.   |