Oracle 11g OCP认证052考试题库(75)-CUUG内部学员版
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我要咨询11g版本的OCP考试持续了好几年,一直比较稳定,直到2018年4月份左右,052考试不断的出现新的考题,虽然我们收集整理了不少,但新题还是难避免,这样出现一部分新题,我们收集一部分,持续了不短的时间。
对于这些052考试新题,不仅老师给出了答案,学员也积极的找资料、查文档,形成了一份内部综合版本,通过分数非常高,一起渡过这次052考试的难关。
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052考试题-74(OCP考试题库讨论群:101-5267-481 验证:ocp)
Which two are true about UNDO segments and UNDO tablespaces in the same database and instance ?
A)Multiple transactions may share a single UNDO segment.
B)A database can have multiple active UNDO tablespaces.
C)Multiple transactions run by the same Oracle user must share a single UNDO segment.
D)Automatic Undo Management attempts to minimize the number of active transactions that share the same UNDO segment
E)Multiple transactions run by the same Oracle user must not share a single UNDO segment.
F)Multiple transactions run by the different Oracle user must not share a single UNDO segment
Answer: AD
赵:
B 错,可以有多个 UNDO 表空间,但只能有一个活动的 UNDO 表空间。
CEF,排除有 must 的选项。
D 译:自动撤消管理尝试将共享相同撤消段的活动事务数量降至最低。