053(十七）

81、

81.Evaluate the following command and its output:
SQL>SELECT * FROM dba_temp_free_space;
TABLESPACE_NAME TABLESPACE_SIZE ALLOCATED_SPACE FREE_SPACE
LMTEMP 250609664 101048576 149561088
Which two statements correctly interpret the output? (Choose two.)
A. FREE_SPACE indicates only the space that is currently unallocated.
B. ALLOCATED_SPACE indicates only the space currently allocated and in use.
C. FREE_SPACE indicates only the space that is currently allocated and available for reuse.
D. ALLOCATED_SPACE indicates both the space currently allocated and used, and the space that is available for reuse.
E. FREE_SPACE indicates both the space that is currently allocated and available for reuse, and the space that is currently unallocated.

Answer: DE

参考：Reference 

ALLOCATED_SPACE
Total allocated space, in bytes, including space that is currently allocated and used and space that is currently allocated and available for reuse 

FREE_SPACE
Total free space available, in bytes, including space that is currently allocated and available for reuse and space that is currently unallocated

82、

82.Identify the three predefined server-generated alerts. (Choose three.)
A. Drop User
B. Tablespace Space Usage
C. Resumable Session Suspended
D. Recovery Area Low On Free Space
E. SYSTEM Tablespace Size Increment

Answer: BCD

参考：
Administrator's Guide
'
Monitoring Database Operationswith Server-Generated Alerts

83、

83.Which three actions are required to configure the Flashback Database? (Choose three.)
A. set Flash Recovery Area
B. enable Flashback logging
C. create FLASHBACK tablespace
D. start the database in the ARCHIVELOG mode
E. start the database in the NOARCHIVELOG mode

Answer: ABD

参考：oracle 闪回技术--闪回删除

84、View the Exhibit and examine the Data Pump architecture.

Identify the numbered components.

A. 1 - Oracle Loader, 2 - Oracle Data Pump, 3 - Direct Path API
B. 1 - Oracle Data Pump, 2 - Direct Path API, 3 - Oracle Loader
C. 1 - Direct Path API, 2 - Oracle Loader, 3 - Oracle Data Pump
D. 1 - Oracle Loader, 2 - Direct Path API, 3 - Oracle Data Pump

Answer: A

85、

85.You executed the following command to drop a user:
DROP USER scott CASCADE;
Which two statements regarding the above command are correct? (Choose two.)
A. All the objects of scott are moved to the Recycle Bin.
B. Any objects in the Recycle Bin belonging to scott are purged.
C. All the objects owned by scott are permanently dropped from the database.
D. All the objects of scott in the Recycle Bin must be purged before executing the DROP command.
E. Any objects in the Recycle Bin belonging to scott will not be affected by the above DROP command.

Answer: BC 

When you drop a user, Oracle Database also purges all of that user's schema objects from the recycle bin