Oracle 11G OCP 1Z0-052 30

（30）In which situation may the UNDO_RETENTION parameter be ignored, even if it is set to a value?

A. when the data file of the undo tablespace is autoextensible

B. when there are more than one undo tablespaces available in the database

C. when the undo tablespace is of a fixed size and retention guarantee is not enabled

D. when the undo tablespace is autoextensible and retention guarantee is not enabled

答案：（C）

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