【多选题】
A They are never considered obsolete by RMAN.
B They can optionally be written to a fast recovery area (FRA).
C All archive logs are retained after an archival backup is taken, until the
next archival backup is taken of the same database.
D Archive logs are retained if they
are necessary to allow the database to berecovered
to a consistent state when an archival backup is restored
E The SPFILE is included in the archival backup.
F Use of a recovery catalog is always required to support the creation and
use
of archival backups.
G The ARCHIVAL attribute for a backup overrides
the RMAN retention policy
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