（多选题）
You are managing an Oracle Database 11g database. You configured the database to run inARCHIVELOG mode. Which two statements are true in this scenario（）
AYou must shut down the database instance to perform the backups.
BYou must configure the Flash Recovery Area （FRA） for the database.
CYou can perform complete database backups without closing the database.
DAll the previous closed database backups including control files become invalid after you configure thedatabase to ARCHIVELOG mode.
正确答案
答案解析
略
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