单选题In order to find out how many database objects a user has created, which view would the DBA query in the Oracle data dictionary? （）A DBA_USERS B DBA_OBJECTS C DBA_TS_QUOTAS D DBA_TAB_PRIVS 

第1题：

A user wants to connect to the database instance from an application that is running on a remote machine. Which tools should the DBA use to establish the required configuration to ensure that the user is able to connect to the database instance？（）

• A、Data Pump
• B、Oracle Net Manager
• C、Oracle Enterprise Manager
• D、Oracle Universal Installer （OUI）
• E、Database Configuration Assistant （DBCA）

第2题：

You need to perform certain data manipulation operations through a view called EMP_DEPT_VU, which you previously created.You want to look at the definition of the view (the SELECT statement on which the view was create.) How do you obtain the definition of the view?（）

• A、Use the DESCRIBE command in the EMP_DEPT VU view.
• B、Use the DEFINE VIEW command on the EMP_DEPT VU view.
• C、Use the DESCRIBE VIEW command on the EMP_DEPT VU view.
• D、Query the USER_VIEWS data dictionary view to search for the EMP_DEPT_VU view.
• E、Query the USER_SOURCE data dictionary view to search for the EMP_DEPT_VU view.
• F、Query the USER_OBJECTS data dictionary view to search for the EMP_DEPT_VU view.

第3题：

A database user SMITH tries to query the V$SESSION view and fails to access it as follows： SQL> connect smith/smith  Connected.  SQL> SELECT * FROM v$session；  SELECT * FROM v$session *  ERROR at line 1：  ORA-00942： table or view does not exist  Which are the two possible solutions to enable SMITH to query the data in V$SESSION（）

• A、granting SELECT privilege to SMITH on V$SESSION
• B、granting SELECT privilege to SMITH on V_$SESSION
• C、asking the user SMITH to run the catalog.sql script
• D、granting SELECT privilege to SMITH on V$FIXED_TABLES
• E、setting the O7_DICTIONARY_ACCESSIBILITY parameter to TRUE
• F、creating a view based on V$SESSION and granting SELECT privilege to SMITH on the view that was created

第4题：

You are identifying dictionary objects in the Oracle database. Which of the following is a view in the data dictionary?（） 

• A、V$DATABASE 
• B、DBA_TABLES 
• C、SYSAUD$ 
• D、EMP

第5题：

You find this query being used in your Oracle 12c database: Which method a used by the optimizer to limit the rows being returned?（）

• A、A filter is added to the table query dynamically using ROWNUM to limit the rows to 20 percent of the total rows
• B、All the rows are returned to the client or middle tier but only the first 20 percent are returned to the screen or the application.
• C、A view is created during execution and a filter on the view limits the rows to 20 percent of the total rows.
• D、A TOP-N query is created to limit the rows to 20 percent of the total rows

第6题：

A customer has determined they want to install an IBM x445 system in their company.  They will be running a large database on the system.  In order to determine how many CPUs will be needed to attain the optimum cost-effective solution， which TWO of the following questions should be asked？（）

• A、How large is the database？
• B、What is the expected user workload？
• C、How is the database software licensed？
• D、What type of user interface will be used？
• E、How much data cache will the database be allocated？

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第13题：

You need to perform certain data manipulation operations through a view called EMP_DEPT_VU, which you previously created. You want to look at the definition of the view (the SELECT statement on which the view was created.) How do you obtain the definition of the view?（）

• A、Use the DESCRIBE command on the EMP_DEPT_VU view.
• B、Use the DEFINE VIEW command on the EMP_DEPT_VU view.
• C、Use the DESCRIBE VIEW command on the EMP_DEPT_VU view.
• D、Query the USER_VIEWS data dictionary view to search for the EMP_DEPT_VU view.
• E、Query the USER_SOURCE data dictionary view to search for the EMP_DEPT_VU view.
• F、Query the USER_OBJECTS data dictionary view to search for the EMP_DEPT_VU view.

第14题：

On Tuesday， a junior DBA dropped an important application user account， whose schema has important tables. You are asked to recover all the objects in the schema. On investigation， you find that the user account was dropped at 11：00 a.m. and Sunday’s backup is the most recent backup. Which flashback feature would you use？（）

• A、Flashback Drop
• B、Flashback Table
• C、Flashback Database
• D、Flashback Version Query
• E、Flashback Transaction Query

第15题：

You are required to flashback your database. You want to find the amount of flashback data generated since the database was opened. Which task will you perform to obtain the required information？（）

• A、 Query the V$FLASHBACK_DATABASE_LOG view.
• B、 Query the V$FLASHBACK_DATABASE_STAT view.
• C、 Check the value of the DB_FLASHBACK_RETENTION_TARGET initialization parameter.
• D、 Query the V$RECOVERY_FILE_DEST view.

第16题：

Which data dictionary table should you query to view the object privileges granted to the user on specific columns? （）

• A、USER_TAB_PRIVS_MADE
• B、USER_TAB_PRIVS
• C、USER_COL_PRIVS_MADE
• D、USER_COL_PRIVS

第17题：

You are about to create your Oracle data dictionary for use with the database. Which of the following users would you connect to the database as for this purpose in Oracle9i and later releases?（）

• A、SYSTEM 
• B、OUTLN 
• C、INTERNAL 
• D、SYS

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