Oracle認(rèn)證考試1z0-040章節(jié)練習(xí)(2018.08.01)

單項(xiàng)選擇題
You executed the following SQL statement to shrink the EMPLOYEES table segment stored in the EXAMPLE tablespace: ALTER TABLE employees SHRINK SPACE CASCADE; Which statement is correct in this scenario?（）
A.The data in the segment will be compacted but the high water mark will not be adjusted
B.The EMPLOYEES table will be changed to read-only mode during the shrink operation
C.The indexes created on the EMPLOYEES table will need to be rebuilt after the shrink operation is over
D.The shrink behavior will be cascaded to all dependent segments of the table that support a shrink operation
E.Data manipulation language (DML) operations will not be possible on the EMPLOYEES table during the COMPACTION phase of the shrink operation
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
多項(xiàng)選擇題
Which two statements regarding the Policy Framework in Enterprise Manager (EM) are correct?（）
A.Policy violations are prioritized as High, Medium, or Informational by category
B.Policies can be disabled completely, or flagged as ignored, for the specified target
C.Policies can be flagged as ignored, but never completely disabled, for the specified target
D.Policy violations must be corrected, otherwise the database will shut down until corrective action occurs
多項(xiàng)選擇題
You need to ensure that the database users should be able to use the various flashback query features in order to go back in time by four hours. What would you do to achieve this?（）
A.set SQL_TRACE=True
B.set UNDO_RETENTION=14400
C.set FAST_START_MTTR_TARGET=240
D.set LOG_CHECKPOINT_INTERVAL=240
E.set DB_FLASHBACK_RETENTION_TARGET=14400
F.set the RETENTION GUARANTEE clause for the undo tablespace
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
You explicitly specified the tablespace usage threshold values while creating a tablespace. You need to revert to the database-wide default tablespace usage threshold values for the tablespace. Which PL/SQL package would you use?（）
A.DBMS_STATS
B.DBMS_ALERT
C.DBMS_SPACE
D.DBMS_MONITOR
E.DBMS_SERVER_ALERT
F.DBMS_SPACE_ADMIN
單項(xiàng)選擇題
You have 100 segments in the USERS tablespace. You realize that the USERS tablespace is running low on space. You can use Segment Advisor to（）.
A.add data files to the tablespace
B.identify the segments that you should shrink
C.modify the storage parameters for the tablespace
D.automatically shrink the segments with unused space
E.check the alerts generated for the tablespace that is running low on space
單項(xiàng)選擇題
You have three temporary tablespace groups named G1, G2, and G3 in your database. You are creating a new temporary tablespace as follows: CREATE TEMPORARY TABLESPACE TEMP1 TEMPFILE /u1/data/temp1.dbf SIZE 10M TABLESPACE GROUP ;Which statement regarding the above command is correct?（）
A.It will create the tablespace TEMP1 in group G1
B.It will create the tablespace TEMP1 in group G3
C.It will not add the tablespace TEMP1 to any group
D.It will create the tablespace TEMP1 in the default group
E.It will throw an error with message 'specified group is not available
F.It will create a new group with a system-generated name and add the tablespace TEMP1 to it.
多項(xiàng)選擇題
Which two statements regarding the FLASHBACK_TRANSACTION_QUERY view are correct?（）
A.You can find information about only active transactions from the view
B.You can find information about read only transactions from the view
C.You require the SELECT ANY TRANSACTION system privilege to access the view
D.You can find information about both active and committed transactions from the view
E.You require the SELECT ON FLASHBACK_TRANSACTION_QUERY object privilege to access the view
單項(xiàng)選擇題
You have 100 segments in the USERS tablespace. You get an alert that the USERS tablespace is running low on space. You decide to shrink some segments. Which option would you use to determine which segments to shrink?（）
A.Segment Advisor
B.SQL Tuning Advisor
C.SQL Access Advisor
D.Segment Resource Estimation
E.Automatic Database Diagnostic Monitor (ADDM)

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