57題、choose one
Which statement is true about a database in ARCHIVELOG mode?
A) Full database backups can be performed when the database is opened.
B) A Fast Recovery Area (FRA) must be configured for the database.
C) Online redo log files have to be multiplexed before putting the database in ARCHIVELOG mode.
D) All backups taken prior to switching to ARCHIVELOG mode can be used to perform complete recovery.
Answer：A
(解析：歸檔模式下可以進行熱備，歸檔之前的備份是不能用來做完全恢復，因爲缺少歸檔日誌 來自3組：1015267481)