多选题You are performing flashback of the EMPLOYEE table in SCOTT’s schema because some incorrect data was inserted into the table and committed by mistake. Which two clauses will you use in the FLASHBACK TABLE statement for using the Flashback Table feature

第1题：

You are employed as a DBA in an organization. You are informed that the record of EMP_NO 1000 is missing from the SCOTT.EMP table. You are required to identify the user who deleted the record， the SQL statement that will undo the deletion， and the transaction ID of the transaction that deleted the employee record. Which feature will you use to perform the tasks？（）

• A、 Only the Flashback Table
• B、 Both the Flashback Transaction Query and the Flashback Version Query
• C、 Only the Flashback Drop
• D、 Only the Flashback Version

第2题：

You are shrinking the SCOTT.EMP table by executing the ALTER TABLE SCOTT.EMP SHRINK SPACE CASCADE statement. What is a prerequisite for shrinking the SCOTT.EMP table？（）

• A、 You must enable the block change tracking feature.
• B、 You must have enable the flashback feature.
• C、 You must use the OMF in your database.
• D、 You must define the tablespace of the SCOTT.EMP table for automatic segment space management.

第3题：

第4题：

You created the DEPT table by using the following command：   CREATE TABLE scott.dept   （deptno NUMBER（3），   dname VARCHAR2（15），   loc VARCHAR2（15） ）   STORAGE （INITIAL 100K NEXT 50K  MAXEXTENTS 10 PCTINCREASE 5  FREELIST GROUPS 6 FREELISTS 4）；You are required to shrink the DEPT table. While performing the shrink operation， you want to ensure that the recovered space is returned to the tablespace in which the DEPT table is stored. You do not want to shrink the indexes created on the DEPT table. What will you do to shrink the SCOTT.EMP table？（）

• A、 Issue the ALTER TABLE SCOTT.DEPT SHRINK SPACE COMPACT； statement.
• B、 Issue the ALTER TABLE SCOTT.DEPT SHRINK SPACE； statement.
• C、 Issue the ALTER TABLE SCOTT.DEPT SHRINK SPACE CASCADE； statement.
• D、 You cannot shrink the SCOTT.EMP table.

第5题：

You are performing flashback of the EMPLOYEE table in SCOTT’s schema because some incorrect data was inserted into the table and committed by mistake. Which two clauses will you use in the FLASHBACK TABLE statement for using the Flashback Table feature？ （）

• A、 RESETLOGS
• B、 TO TIMESTAMP
• C、 TO BEFORE DROP
• D、 RENAME TO
• E、 TO SCN

第6题：

You are working as a DBA at NetFx Corporation. A user， Scott， is maintaining the records of all the employees in the EMPLOYEEtable. Initially， the salary of the employee， ’E0025’， was $1800. On 1 May 2004， the salary of the employee， ’E0025’， was increased by $200.   The user， Scott， issued the following statement to modify the record of the employee， ’E0025’：   SQL>UPDATE EMPLOYEE  SET SALARY = 2000   WHERE EMPNO = ’E0025’；   SQL>COMMIT；   On December 1， 2004， the salary of the employee， ’E0025’， was increased by $400. The user， Scott， issued the following statement to modify the record of the employee， ’E0025’：   SQL>UPDATE EMPLOYEE  SET SALARY = 2400   WHERE EMPNO = ’E0025’；   SQL>COMMIT；   On July 1， 2005， the salary of the employee， ’E0025’， was increased by $500. The user， Scott， issued the following statement to modify the record of the employee， ’E0025’   SQL>UPDATE EMPLOYEE  SET SALARY = 2900   WHERE EMPNO = ’E0025’；   SQL>COMMIT；   On July 5， 2005， the HR manager asked you to generate the increment report of the employee， ’E0025’， for the period between 1 May 2004 and 1 July 2005. Which flashback feature will you use to generate the increment report？（）

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

第7题：

At 5：30 PM， a database administrator， William， is informed that an important record of employee no E0025 is missing from the SCOTT.EMPLOYEE table. At 4：30 P.M， the table contained the record of employee no E0025. William issues the following command to find the SQL statements that are used to undo the deletion：    SELECT operation， undo_sql， logon_user   FROM FLASHBACK_TRANSACTION_QUERY  WHERE xid=   HEXTORAW（’0100043E23456’）；   where ’0100043E23456’ is the transaction ID of the transaction that deleted the row. Before issuing the above statement， which task did William perform to identify the transaction ID of the transaction that deleted the row？（）

• A、 William used the Flashback Version Query feature.
• B、 William issued the CROSSCHECK command at the RMAN prompt.
• C、 William viewed the alert log file.
• D、 William used the Flashback Table feature.

第8题：

第9题：

On Jan 11， 2005 at 2：30 P.M.， an erroneous update operation modified all the values of column LASTNAME in the EMPLOYEE table in the Scott schema to an empty string. You are the system administrator， and you want to return the original values in the table. To do so， you decided to flash back the table. Which two options can you use to flash back a table？（）

• A、 by using Oracle Enterprise Manager
• B、 by issuing the FLASHBACK TABLE statement at the RMAN prompt
• C、 by issuing the FLASHBACK TABLE statement at the SQL prompt
• D、 by issuing the FLASHBACK TABLE statement at the LSNRCTL prompt

第10题：

The RECYCLEBIN parameter is set to ON for your database. You drop a table，PRODUCTS，from the SCOTT schema.  Which two statements are true regarding the outcome of this action？（）

• A、 All the related indexes and views are automatically dropped
• B、 The flashback drop feature can recover only the table structure
• C、 Only the related indexes are dropped whereas views are invalidated
• D、 The flashback drop feature can recover both the table structure and its data