The system was running a normal workload during the last 24 hours. You need to ensure that with the same workload you should be able to flashback tables by three hours. What would you do to find the system recommendations for the undo retention period and

题目

The system was running a normal workload during the last 24 hours. You need to ensure that with the same workload you should be able to flashback tables by three hours. What would you do to find the system recommendations for the undo retention period and the undo tablespace size?（）

A、set DB_FLASHBACK_RETENTION_TARGET=10800
B、create a new scheduler window for the time period of 24 hours and use the optimizer statistics
C、modify the Automatic Workload Repository (AWR) snapshot time interval to three hours and use ADDMfindings
D、specify New Undo Retention as three hours and Analysis Time period as Last One Day in the Undo Advisor page and use its recommendations

参考答案和解析

正确答案:D

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相似问题和答案

第1题：

表格视图GridView控件的基类是( )。

A.System.Web.UI.WebControls

B.System.Data.OdbcConnection

C.System.Web.UI

D.System.Web.UI.WebControls.DataGrid

正确答案：A

第2题：

The operating system has several major components，including the(64)，a memory management system，the file system manager，device drivers，and the system libraries．

A．application kernel

B．information kernel

C．network kernel

D．system kernel

正确答案：D
解析：操作系统包含几大组成部分，其中有系统内核，内存管理系统，文件系统管理器，设备驱动程序和系统库。

第3题：

通过继承()类,用户可以创建自己的异常类.

A.System.Exception

B.System.SystemException

C.System.ApplicationException

D.System.UserException

标准答案:A

第4题：

修改系统变量 Path 的值为%System Root%/ System32;% System Root%;% System Root%/ System32/wbem;D:/

正确答案: 右击【我的电脑】→【属性】→【高级】→【环境变量】→选中path→【编辑】→输入“%SystemRoot%/System32；%SystemRoot%；%SystemRoot%/System32/wbem；D:///”→【确定】→【确定】

第5题：

What is the likely cause of a system hanging at boot code 557?()

A.The system is configuring network adapters.

B.The system is configuring fibre channel devices.

C.The system is unable to mount the rootvg filesystems.

D.The system is unable to access the installation media.

参考答案：C

第6题：

The(74)has several major components, including the system kernel, a memory management system, the file system manager, device drivers, and the system libraries.

A．application

B．information system

C．network

D．operating system

正确答案：D
解析：操作系统有几个主要组成部分，主要包括系统内核、内存管理、文件系统管理、设备驱动管理和系统库等。

第7题：

The ______ has several major components, including the system kernel, a memory management system, the file system manager, device drivers, and the system libraries.

A．application

B．information system

C．network

D．operating system

正确答案：D
解析：译文的含义是：()有几个主要部件，包括系统内核、存储管理系统、文件系统管理器、设备驱动器和系统库。A、B、C、D各选项的意思依次为：应用软件、信息系统、网络、操作系统，所以本题应该选择D。

第8题：

●The (75) has several major components，including the system kernel,a memory management system,the file system manager,device drivers，and the system libraries.

(75) A．application

B．information system

C．network

D．operating system

正确答案：D
【解析】操作系统有几个主要组成部分，主要包括系统内核、内存管理、文件系统管理、设备驱动管理和系统库等。

第9题：

在模式下，如果键入system，则表示

A.sysname
B.system-view
C.system-log
D.system-name

答案：B

解析：

注意常用的缩写 ,sys是system-view，进入系统视图。

第10题：

系统调用的英文翻译为（）

A、call system
B、system need
C、system call
D、system

正确答案:C

The system was

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