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Oracle® Database Backup and Recovery Reference
11g Release 2 (11.2)

Part Number E10643-03
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RC_LOG_HISTORY

This view lists historical information about the online redo logs. RMAN adds a new row during a catalog resynchronization whenever Oracle has switched out of the online redo log. This catalog view corresponds to the V$LOG_HISTORY view.

Column Data Type Description
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 redo log history RECID from V$LOG_HISTORY. RECID and STAMP form a concatenated primary key that uniquely identifies this record in the target database control file.
STAMP NUMBER The redo log history stamp from V$LOG_HISTORY. RECID and STAMP form a concatenated primary key that uniquely identifies this record in the target database control file.
THREAD# NUMBER The thread number of the online redo log.
SEQUENCE# NUMBER The log sequence number of the redo log.
FIRST_CHANGE# NUMBER The SCN generated when switching into the redo log.
FIRST_TIME DATE The time stamp when switching into the redo log.
NEXT_CHANGE# NUMBER The first SCN of the next redo log in the thread.
CLEARED VARCHAR2(3) YES 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.