多项选择题

A.The bigfile tablespace have only one data file.B.The ……

Which two statements about bigfile tablespaces are true？（）

A.The bigfile tablespace have only one data file.
B.The segment space management is automatic.
C.The extent management is dictionary managed.
D.The database can have only one bigfile tablespace.
E.The bigfile tablespace can be converted to a smallfile tablespace.

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单项选择题Whichstatementistrueaboutthelossofsystem-criticaldatafilesinARCHIVELOGmode？（）

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A.V$INSTANCE
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