单选题Which statement is true about the UNDO_RETENTION parameter when retention guarantee is not enabled（）A It is the time period after which the undo data becomes obsolete.B It is the time period after which the committed undo data would be transferred to a
题目
单选题
Which statement is true about the UNDO_RETENTION parameter when retention guarantee is not enabled（）
A
It is the time period after which the undo data becomes obsolete.
B
It is the time period after which the committed undo data would be transferred to a temporary tablespace.
C
It is the minimum time period up to which the committed undo data would be retained if free undo space isavailable.
D
It is the time period after which the undo data is transferred to the Flash Recovery Area to provide readconsistency.
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参考答案和解析
正确答案：
C
解析：
暂无解析