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Which two statements are true regarding an Automatic Storage Management （ASM） instance？（）
A: As ASM instance mounts an ASM control file
B: An ASM instance uses the ASMB process for rebalancing of disks within a disk group
C: Automatic Memory Management is enabled in an ASM instance even when the MEMORY_TARGET  parameter is not set explicitly
D: An RDBMS instance gets connected to an ASM instance using ASMB as a foreground process when the database instance is started

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出自：Oracle认证

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