Which two statements regarding the LOGGING clause of the CREATE TABLESPACE... statement are correct?()
A:This clause is not valid for a temporary or undo tablespace.
B:If the tablespace is in the NOLOGGING mode,no operation on the tablespace will generate redo.
C:The tablespace will be in the NOLOGGING mode by default,if not specified while creating a tablespace.
D:The tablespace-level logging attribute can be overridden by logging specifications at the table,index, materialized view,materialized view log,and partition levels.
出自:Oracle认证