11、Which three are true about UNDO data?

A) It is used to roll back failed transactions.

B) It is used to rewind a database by using FLASHBACK DATABASE.

C) It is used to recover dropped tables by using FLASHBACK TABLE … TO BEFORE DROP.

D) It is used to enable ROLLBACK statements to roll back uncommitted updates.

E) It is used to provide read consistency.

F) It is used during online backups to guarantee their consistency.

Answer:ADE

OCP 052题库全变，最新052考试题及答案整理-第11题的更多相关文章

  1. 【ocp 052又加新题了】052新加的考试题及答案整理-第13题

    13.Which two are true about AWR snapshots? A) They are stored In the SYSAUX tablespace. B) They are ...

  2. OCP考试题库更新，052最新考题及答案整理-第8题

    8.Which two are true about the Fast Recovery Area (FRA)? A) It should be larger than the database. B ...

  3. ocp题库更新，052最新考试题及答案整理-31

    31.Which two events always request the LGWR to write? A) when LGWR is notified by a server process t ...

  4. oracle ocp题库变化，052最新考试题及答案整理-30

    30.Which is true when a database instance is shut down? A. Only transactional and normal modes wait ...

  5. OCP最新题库收集，新版052考题及答案整理-19

    19.Which is true about invalid PL/SQL objects? A) They are automatically recompiled against the new ...

  6. 【OCP|052】OCP换题库，052最新题库及答案整理-第10题

    10.Which two are true about consistent database backups? A) They can only be taken when a RECOVERY C ...

  7. 【OCP|052】iZ0-052最新题库及答案整理-第9题

    9.Which is true about the Automatic Diagnostic Repository (ADR)? A) It includes diagnostic data for ...

  8. ocp题库变化，052新加的考试题及答案整理-32

    32. Examine these commands and their output: • SQL> SELECT * FROM emp; • ENO ENAME • ---- ----- • ...

  9. OCP题库变更，052新加的考试题及答案整理-22题

    22.You are planning a software installation for both Oracle Database 11g Release 1 and Release 2. Yo ...

随机推荐

  1. 解决linux下root运行Elasticsearch异常

    如果以root身份运行将会出现以下问题 root@yxjay:/opt/elasticsearch-2.3.5/bin# ./elasticsearchException in thread &quo ...

  2. plsql中的光标

    操作oracle数据库效率最高的语言就是plsql程序,故而把访问数据库的代码写成plsql的执行效率要高于java,c ,c++等代码

  3. Nginx源码完全注释（5）core/ngx_cpuinfo.c

    /* * Copyright (C) Igor Sysoev * Copyright (C) Nginx, Inc. */ #include <ngx_config.h> #include ...

  4. Ztree右键事件，如何让指定的子节点不显示右键菜单。

    这里我记录一下我自己的解决方案: 1.首先在Ztree的setting设置中加一个鼠标右键回调函数onRightClick,然后在加一个beforeRightClick(具体含义可以看官方API) v ...

  5. eclipse插件jd-eclipse的使用

    https://blog.csdn.net/u013215289/article/details/51275527

  6. 4418开发板读取u盘说明

    1.插上u盘后会在dev下生成两个文件db db1 将db1挂载即可访问..

  7. 遍历properties文件

    Properties pro = new Properties();try {    InputStream inStr = ClassLoader.getSystemResourceAsStream ...

  8. HUST软工1501-1503班第2周作业成绩公布

    说明 本次公布的成绩对应的作业为: 第2周个人作业:WordCount编码和测试 如果同学对作业成绩存在异议,在成绩公布的72小时内(截止日期4月26日0点)可以进行申诉,方式如下: 毕博平台的第二周 ...

  9. SciTE编写lua的快捷键整理

    SciTE快捷键整理 常用键整理: Ctrl + Q: 多行注释 Ctrl + L:删除一行或多行 Ctrl+T :和上一行换位置 Ctrl+D :复制高亮选中字符. 如果没有高亮选择字符, 则复制光 ...

  10. 编写高质量代码改善C#程序的157个建议——建议136：优先使用后缀表示已有类型的新版本

    建议136:优先使用后缀表示已有类型的新版本 加后缀在某些情况下是很奇怪的形式,我们都不愿意看到OrderProcessor2这样的类型.但是,有的时候仍旧有必要这样做.最典型的是FCL中关于数字证书 ...