You are managing a 24*7 database. The backup strategy for the database is to perform user-managedbackups.Identify two prerequisites to perform the backups. (Choose two.)（）<br>A:The database must be opened in restricted mode.<br>B:The database must be configured to run in ARCHIVELOG mode.<br>C:The tablespaces are required to be in backup mode before taking the backup.<br>D:The tablespaces are required to be in read-only mode before taking the backup

You are managing a 24*7 database. The backup strategy for the database is to perform user-managedbackups.Identify two prerequisites to perform the backups. (Choose two.)（）
A:The database must be opened in restricted mode.
B:The database must be configured to run in ARCHIVELOG mode.
C:The tablespaces are required to be in backup mode before taking the backup.
D:The tablespaces are required to be in read-only mode before taking the backup

出自：Oracle认证

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