Which tuning tool recommends how to optimize materialized views so that these views can take advantage of the general query rewrite feature?（）

单项选择题WhichcommandisusedtoconfigureRMANtoperformacompressedbackupforeverybackupexecuted？（）

A. BACKUP AS COMPRESSED BACKUPSET DATABASE
B. BACKUP AS COMPRESSED COPY OF DATABASE
C. CONFIGURE DEVICE TYPE DISK BACKUP TYPE TO COMPRESSED BACKUPSET
D. CONFIGURE DEVICE TYPE DISK BACKUP TYPE COMPRESS 
E. BACKUP DATABASE COMPRESS

单项选择题Which statement about Automatic Memory Management with Oracle 11g is true?（）

A. You cannot specify MEMORY_TARGET if you explicitly specify SGA_TARGET or PGA_AGGREGATE_TARGET values that are greater than zero in your parameter file.
B. Oracle can reallocate memory between the SGA and PGA automatically as needed.
C. To use Automatic Memory Management, you must explicitly set both the MEMORY_TARGET and MEMORY_MAX_TARGET parameters in your parameter file.
D. You can set the MEMORY_TARGET parameter to a maximum value of the current SGA size plus the current PGA size

多项选择题For which two situations would you use functionality provided by the Resource Manager? （）(Choose two.)

A. setting idle timeout limits on resource plans
B. saving storage space by using compressed backup sets
C. creating jobs that will run automatically at a scheduled time
D. assigning priorities to jobs to manage access to system resources
E. creating alerts to perform notification when tablespaces are low on available space resources

单项选择题You opened the encryption wallet and then issued the following command：   SQL>CREATE TABLESPACE securespace DATAFILE ’ home user oradata secure01.dbf’ SIZE 150M  ENCRYPTION USING ’3DES168’ DEFAULT STORAGE（ENCRYPT）；   Then you closed the wallet. Later， you issued the following command to create theEMPLOYEES table in the SECURESPACE tablespace and you use the NO SALT option for the EMPID column.  What is the outcome？（）

A. It creates the table and encrypts the data in it.
B. It generates an error because the wallet is closed.
C. It creates the table but does not encrypt the data in it.
D. It generates an error because the NO SALT option cannot be used with the ENCRYPT option.

多项选择题Which statements are true regarding table compression? （）(Choose all that apply.)

A. It saves disk space and reduces memory usage.
B. It saves disk space but has no effect on memory usage.
C. It incurs extra CPU overhead during DML as well as direct loading operations.
D. It incurs extra CPU overhead during DML but not direct loading operations.
E. It requires uncompress operation during I/O.