Oracle認(rèn)證考試1z0-040單項(xiàng)選擇題每日一練(2019.01.25)

單項(xiàng)選擇題
You have three production databases, HRDB, FINDB, and ORGDB, that use the same ASM instance. At the end of the day, you execute the following command on the ASM instance to shut down: SQL> shutdown immediate; What is the result of executing this command?（）
A.All the instances, including the ASM instance, are shut down in the ABORT mode
B.The ASM instance is shut down, but the other instances are still running
C.The ASM instance is still functional, but the other instances are shut down
D.All the instances, including the ASM instance, are shut down in the IMMEDIATE mode.
E.HRDB, FINDB, and ORGDB instances are shut down in the ABORT mode and the ASM instance is shut down in the IMMEDIATE mode
F.HRDB, FINDB, and ORGDB instances are shut down in the NORMAL mode and the ASM instance is shut down in the IMMEDIATE mode
單項(xiàng)選擇題
View the Exhibit and examine the recommendation graph provided for a test database by the Undo Advisor.The graph recommends that the size of undo tablespace should be set to（）.
A.1 MB
B.6 MB
C.10 MB
D.15 MB
E.11 MB
單項(xiàng)選擇題
You want to perform the database backup when user activity on your system is low, such as between 12:00 a.m. and 2:00 am. Which command terminates with an error if the backup is not complete at the end of the specified duration?（）
A.RMAN> BACKUP DURATION 2:00 MINIMIZE LOAD DATABASE
B.RMAN> BACKUP DURATION 2:00 PARTIAL FILESPERSET 1 DATABASE
C.RMAN> BACKUP DURATION 2:00 PARTIAL MINIMIZE TIME DATABASE
D.RMAN> BACKUP AS COPY DURATION 2:00 PARTIAL MINIMIZE LOAD DATABASE
單項(xiàng)選擇題
The system was running a normal workload during the last 24 hours. You need to ensure that with the same workload you should be able to flashback tables by three hours. What would you do to find the system recommendations for the undo retention period and the undo tablespace size?（）
A.set DB_FLASHBACK_RETENTION_TARGET=10800
B.create a new scheduler window for the time period of 24 hours and use the optimizer statistics
C.modify the Automatic Workload Repository (AWR) snapshot time interval to three hours and use ADDMfindings
D.specify New Undo Retention as three hours and Analysis Time period as Last One Day in the Undo Advisor page and use its recommendations
單項(xiàng)選擇題
View the Exhibit and examine the highlighted alert. You have received an alert with the Category specified as Snapshot Too Old. Which page would you open from the Advisor Central page to determine the system recommendations to avoid such alerts in future?（）
A.ADDM
B.Memory Advisor
C.Segment Advisor
D.Undo Management
E.SQL Tuning Advisor
F.SQL Access Advisor