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Which statement correctly describes the function of Oracle9i Cache Fusion feature？（）
A:It provides each session with its own view of the database at a different point in the past. 
B:It enables you to execute scalable applications on a clustered database without having to partition the users or the database tables. 
C:It lets you dynamically reassign memory in your database buffer cache to different block buffer sizes. 
D:It allows you to add new sites to multimaster replication environment without quiescing the master definition site.

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出自：Oracle认证

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