单选题Examine the following command: SQL ALTER TABLE booking SHRINK SPACE COMPACT; Which activity is performed when the preceding command is executed?()A The shrink operation touches every block in the BOOKING tableB The high-water mark (HWM) for the BOOKING

题目
单选题
Examine the following command: SQL> ALTER TABLE booking SHRINK SPACE COMPACT; Which activity is performed when the preceding command is executed?()
A

The shrink operation touches every block in the BOOKING table

B

The high-water mark (HWM) for the BOOKING table is shifted from its original position

C

The progress of the shrink operation is saved in the bitmap blocks of the BOOKING table

D

The data manipulation language (DML) triggers on the BOOKING table are executed because the shrink operation is internally handled by the INSERT/DELETE operation

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相似问题和答案

第1题:

You created the DEPT table by using the following command:   CREATE TABLE scott.dept   (deptno NUMBER(3),   dname VARCHAR2(15),   loc VARCHAR2(15) )   STORAGE (INITIAL 100K NEXT 50K  MAXEXTENTS 10 PCTINCREASE 5  FREELIST GROUPS 6 FREELISTS 4);You are required to shrink the DEPT table. While performing the shrink operation, you want to ensure that the recovered space is returned to the tablespace in which the DEPT table is stored. You do not want to shrink the indexes created on the DEPT table. What will you do to shrink the SCOTT.EMP table?()

  • A、 Issue the ALTER TABLE SCOTT.DEPT SHRINK SPACE COMPACT; statement.
  • B、 Issue the ALTER TABLE SCOTT.DEPT SHRINK SPACE; statement.
  • C、 Issue the ALTER TABLE SCOTT.DEPT SHRINK SPACE CASCADE; statement.
  • D、 You cannot shrink the SCOTT.EMP table.

正确答案:D

第2题:

When shrinking a table segment, you choose to shrink all the indexes for that table using the SHRINK SPACE command. Which clause should you use?()

  • A、 INCLUDING DEPENDENCIES
  • B、 INCLUDING DEPENDENCIES CASCADE
  • C、 COMPACT
  • D、 CASCADE
  • E、 None of the above

正确答案:D

第3题:

View the exhibit and examine the TRANS table‘s storage information.After a massive delete operation, you executed the following statement to shrink the TRANS table:SQL> ALTER TABLE trans SHRINK SPACE CASCADE;Which statement describes the outcome of the command?()

A. An error is produced.

B. The table and all related objects are compacted and the position of the high-water mark (HWM) for the table is adjusted

C. The table and related indexes are compacted but the position of the high-water mark (HWM) for the table remains unchanged

D. The unused space in the table is reclaimed and returned to the tablespace and the data manipulation language (DML) triggers on the table are fired during the shrinking process


参考答案:B

第4题:

Which of the following options describes Segment Shrink?()  

  • A、 Reclaims space above and below the high-water mark without using additional space
  • B、 Moves rows to a new physical location,resetting the high-water mark,but uses additional space during the operation
  • C、 Deallocates space above the high-water mark that is currently not in use
  • D、 None of the above

正确答案:A

第5题:

Which three descriptions are correct about the effects of the TRUNCATE command on a table()

  • A、The corresponding indexes for the table are also truncated.
  • B、Delete triggers on the table are fired during the execution of the TRUNCATE command.
  • C、The child table is truncated when the TRUNCATE command is applied on the parent table.
  • D、The high-water mark (HWM) is set to point to the first usable data block in the table segment.
  • E、No undo or very little undo data is generated during the execution of the TRUNCATE command

正确答案:A,D,E

第6题:

In one of your online transaction processing (OLTP) applications, users are manipulating and querying a database table simultaneously. From the Segment Advisor, you find that one of the tables is highly fragmented and you want to shrink the table immediately without affecting the currently active queries.  Which option would you use with the ALTER TABLE command to achieve this objective?()

  • A、REBUILD
  • B、CASCADE
  • C、TRUNCATE
  • D、ROW MOVEMENT
  • E、SHRINK SPACE COMPACT
  • F、SHRINK SPACE CASCADE

正确答案:E

第7题:

Examine the following command:   SQL> ALTER TABLE booking SHRINK SPACE COMPACT;   Which activity is performed when the preceding command is executed?()

  • A、 The shrink operation touches every block in the BOOKING table
  • B、 The high-water mark (HWM) for the BOOKING table is shifted from its original position
  • C、 The progress of the shrink operation is saved in the bitmap blocks of the BOOKING table
  • D、 The data manipulation language (DML) triggers on the BOOKING table are executed because the shrink operation is internally handled by the INSERT/DELETE operation

正确答案:C

第8题:

Examine the following command:SQL> ALTER TABLE booking SHRINK SPACE COMPACT;Which activity is performed when the preceding command is executed?()

A. The shrink operation touches every block in the BOOKING table

B. The high-water mark (HWM) for the BOOKING table is shifted from its original position

C. The progress of the shrink operation is saved in the bitmap blocks of the BOOKING table

D. The data manipulation language (DML) triggers on the BOOKING table are executed because the shrink operation is internally handled by the INSERT/DELETE operation


参考答案:C

第9题:

You work as a database administrator for Certkiller .com. Because of space constraints, you decided to manually shrink the table. You executed the ALTER TABLE ....SHRINK SPACE statement to shrink the space and you receive an error as follows:  ERROR at Line 1:  ORA-10635: Invalid segment ortablespacetype What could be the reason?()

  • A、The table is partitioned
  • B、The table name is wrong.
  • C、It is an index-Organized table (IOT)
  • D、The table is stored in locally managedtablespace.
  • E、The table is stored in atablespacewhere segment space is managed manually.

正确答案:E

第10题:

The BOOKINGS table contains online booking information. When a booking is confirmed, the details are transferred to an archival table BOOKINGS_HIST and deleted from the BOOKINGS table. There is no fixed time interval between each online booking and its confirmation. Because sufficient space is not always available from the delete operations the high-water mark (HWM) is moved up and many rows are inserted below the HWM of the table. The BOOKINGS table has Automatic Segment Space Management (ASSM) and row movement enabled. The table is accessible in 24x7 mode. What is the most efficient method to reclaim the space released by the delete operations in the BOOKINGS table?()

  • A、Perform EXPORT, DROP, and IMPORT operations on the BOOKINGS table sequentially
  • B、Shrink the BOOKINGS table by using the ALTER TABLE SHRINK SPACE command
  • C、Move the BOOKINGS table to a different location by using the ALTER TABLE MOVE command
  • D、Deallocate the space in the BOOKINGS table by using the ALTER TABLE DEALLOCATE UNUSED command

正确答案:B

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