多项选择题
You have a database with the following tablespaces： SYSTEM， SYSAUX， UNDO， USERS， TEMP. You want to"roll back" the data in the USERS tablespace to the way it looked yesterday.
Which tablespaces do you need to perform a point-in-time restore operation on in order to complete this task？（）
A. SYSTEM
B. SYSAUX
C. UNDO
D. USERS
E. TEMP
F. This restore is not possible
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