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Which statement is true regarding the type of backups that can be performed on the database?
A.You can perform online whole database backups.
B.You can perform offline whole database backups.
C.You cannot perform schema-level export/import operations.
D.You can perform the backup of only the SYSTEM tablespace when the database is open.
答案:(B)
解析:
A(X), 非归档模式,不能执行非一致性备份
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