Examine the following parameters for a database instanc……

单项选择题You have installed two 64G flash devices to support the Database Smart Flash Cache feature on your database server that is running on Oracle Linux. You have set the DB_SMART_FLASH_FILE parameter: DB_FLASH_CACHE_FILE= ‘ dev flash_device_1 ‘,’ dev flash_device_2’ How should the DB_FLASH_CACHE_SIZE be configured to use both devices?（）

A. Set DB_FLASH_CACHE_SIZE=64G
B. Set D3_FLASH_CACHE_SIZE=64G, 64G
C. Set D3_FLASK_CACKE_SI2E=128G
D. db_flash_cache_SI2E is automatically configured by the instance at startup

单项选择题What is the effect of specifying the ENABLE PLUGGABLE DATABASE clause in a CREATEDATABASE” statement?（）

A. It will create a multitenant container database (CDB) with only the root opened.
B. It will create a CDB with root opened and seed read only.
C. It will create a CDB with root and seed opened and one PDB mounted.
D. It will create a CDB that must be plugged into an existing cdb.
E. It will create a CDB with root opened and seed mounted.

多项选择题Which three statements are true about Flashback Database?（）

A. Flashback logs are written sequentially, and are archived.
B. Flashback Database uses a restored control file to recover a database.
C. The Oracle database automatically creates, deletes, and resides flashback logs in the Fast RecoveryArea.
D. Flashback Database can recover a database to the state that it was in before a reset logs operation.
E. Flashback Database can recover a data file that was dropped during the span of time of the flashback.
F. Flashback logs are used to restore to the blocks' before images, and then the redo data may be used to roll forward to the desired flashback time.

单项选择题In your multitenant container database (CDB) containing pluggable database (PDBs), the HR user executes the following commands to create and grant privileges on a procedure: CREATE OR REPLACE PROCEDURE create_test_v (v_emp_id NUMBER, v_ename VARCHAR2,v_SALARY NUMBER, v_dept_id NUMBER) BEGIN INSERT INTO hr.test VALUES (V_emp_id, V_ename, V_salary, V_dept_id); END; GRANT EXECUTE ON CREATE_TEST TO john, jim, smith, king; How can you prevent users having the EXECUTE privilege on the CREATE_TEST procedure from inserting values into tables on which they do not have any privileges?（）

A. Create the CREATE_TEST procedure with definer’s rights.
B. Grant the EXECUTE privilege to users with GRANT OPTION on the CREATE_TEST procedure.
C. Create the CREATE_TEST procedure with invoker’s rights.
D. Create the CREATE_TEST procedure as part of a package and grant users the EXECUTE privilege the package.

多项选择题Which two statements are true about variable extent size support for large ASM files?（）

A. The metadata used to track extents in SGA is reduced.
B. Rebalance operations are completed faster than with a fixed extent size
C. An ASM Instance automatically allocates an appropriate extent size.
D. Resync operations are completed faster when a disk comes online after being taken offline.
E. Performance improves in a stretch cluster configuration by reading from a local copy of an extent.