单项选择题

Which menu option must be used to grant a user the authority to add or remove users to one or more Security Groups？（）

A. Security Controls
B. Database Access
C. Set Security Profile
D. Authorize Group Reassignment

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问答题

某俱乐部实行会员注册收费，每位会员按整月每月收费500元整。但是对注册时期较长的会员有价格优惠。规则如下：注册6个月以下（含6个月）每月收费金额不变，6至12个月实行9折收费，12个月以上（不含12个月）8折收费。编程在“注册月数”框中输入会员欲注册的月数，单击“计算”按钮后在“应收金额”框中显示应收会费总钱数。单击“结束”按钮结束程序。
本程序设计界面及运行界面如下：

请编写单击“计算”（Button1）按钮的事件处理程序。

单项选择题

our database instance is running. You are not able to access Oracle Enterprise Manager Database Control because the listener is not started.Which tool or utility would you use to start the listener?（）

A. Oracle Net Manager
B. Listener Control utility
C. Database Configuration Assistant
D. Oracle Net Configuration Assistant

单项选择题

You executed the following command to start the database：
SQL> STARTUP
ORACLE instance started.
Total System Global Area 281018368 bytes
Fixed Size 789000 bytes
Variable Size 229635576 bytes
Database Buffers 50331648 bytes
Redo Buffers 262144 bytes
ORA-00205： error in identifying controlfile， check alert log for more info
Which view would you query at this stage to investigate this missing control file？（）

A.V$INSTANCE
B.V$CONTROLFILE
C.DBA_CONTROL_FILES
D.V$DATABASE_PROPERTIES
E.V$CONTROLFILE_RECORD_SECTION