You are managing an Oracle Database 11g database. You configured the database to run in
ARCHIVELOG mode. Which two statements are true in this scenario?
A.
You must shut down the database instance to perform the backups.
B.
You must configure the flash recovery area (fast recovery area) for the database.
C.
You can perform complete database backups without closing the database.
D.
All the previous closed database backups including control files become invalid after you
configure the database to ARCHIVELOG mode.