RC_DATABASE_INCARNATION

This view lists information about all database incarnations registered in the recovery catalog. Oracle creates a new incarnation whenever you open a database with the RESETLOGS option. Records about the current and immediately previous incarnation are also contained in the V$DATABASE view.

Column	Datatype	Description
DB_KEY	NUMBER	The primary key for the database. Use this column to form a join with almost any other catalog view.
DBID	NUMBER	Unique identifier for the database.
DBINC_KEY	NUMBER	The primary key for the incarnation.
NAME	VARCHAR2(8)	The DB_NAME for the database at the time of the RESETLOGS. The value is UNKNOWN if you have done at least one RESETLOGS before registering the target database with RMAN, because RMAN does not know the DB_NAME prior to the RESETLOGS.
RESETLOGS_CHANGE#	NUMBER	The SCN of the RESETLOGS operation that created this incarnation.
RESETLOGS_TIME	DATE	The time stamp of the RESETLOGS operation that created this incarnation.
CURRENT_INCARNATION	VARCHAR2(3)	YES if it is the current incarnation; NO if it is not.
PARENT_DBINC_KEY	NUMBER	The DBINC_KEY of the previous incarnation for this database. The value is NULL if it is the first incarnation recorded for the database.