单选题
A When a successful backup is recorded in the RMAN repository， then a backup of the current control file is performed.
B When a structural change is made to the database， then a backup of the current control file is performed.
C When a successful backup is performed in the RMAN repository， then a backup of the spfile is performed.
D When a structural change is made to the database， then a backup of the alert log file will be performed.
正确答案
答案解析
略
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