单选题You specified segment space management as automatic for a tablespace. What effect would this have on space management?()A Extents would be managed by the freelists.B The segment would be managed by bitmaps.C The segment would be managed by the freelist

题目
单选题
You specified segment space management as automatic for a tablespace. What effect would this have on space management?()
A

Extents would be managed by the freelists.

B

The segment would be managed by bitmaps.

C

The segment would be managed by the freelists.

D

Free space would be managed by the data dictionary.

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相似问题和答案

第1题:

You are creating a locally managed tablespace to meet the following requirements: All the extents should be of the same size.  The data should be spread across two data files.  A bitmap should be used to record the free space within the allocated extents. Which three options would you choose?()

  • A、set PCTFREE and PCTUSED to 50
  • B、specify extent allocation as Uniform
  • C、specify extent allocation as Automatic
  • D、create the tablespace as bigfile tablespace
  • E、create the tablespace as smallfile tablespace
  • F、set segment space management to Automatic
  • G、use the RESIZE clause while creating the tablespace

正确答案:B,E,F

第2题:

As a database administrator you spend a lot of time observing and setting various storage parameter values for your application tables in order to gain performance benefits. Which task would you perform to reduce this overhead?()

  • A、Coalesce the application tables at a regular interval.
  • B、Export and Import the application tables a regular interval.
  • C、Drop and recreate the application tables at a regular interval.
  • D、Move the application tables to a tablespace with less space usage.
  • E、Distribute the application tables across multiple tablespaces depending on usage.
  • F、Move the application tables to automatic segment space management tablespace.

正确答案:F

第3题:

In a recent Automatic Workload Repository (AWR) report for your database, you notice a high number of buffer busy waits. The database consists of locally managed tablespaces with free list managed segments.On further investigation, you find that buffer busy waits is caused by contention on data blocks.Which option would you consider first to decrease the wait event immediately?()

A. Decreasing PCTUSED

B. Decreasing PCTFREE

C. Increasing the number of DBWN process

D. Using Automatic Segment Space Management (ASSM)

E. Increasing db_buffer_cache based on the V$DB_CACHE_ADVICE recommendation


参考答案:D

第4题:

You are trying to alter the initial segment size given to a table in a dictionary-managed tablespace. Which of the following keywords would be used as part of this process?()

  • A、DROP TABLE 
  • B、ALTER TABLE 
  • C、RESIZE 
  • D、COALESCE

正确答案:A

第5题:

Which two are the prerequisites to enable Flashback Data Archive?() (Choose two.)

  • A、Database must be running in archivelog mode.
  • B、Automatic undo management must be enabled.
  • C、Undo retention guarantee must be enabled.
  • D、The tablespace on which the Flashback Data Archive is created must be managed with Automatic Segment Space Management (ASSM).

正确答案:B,D

第6题:

Which two statements about bigfile tablespaces are true? ()

  • A、The bigfile tablespace have only one data file.
  • B、The segment space management is automatic.
  • C、The extent management is dictionary managed.
  • D、The database can have only one bigfile tablespace.
  • E、The bigfile tablespace can be converted to a smallfile tablespace.

正确答案:A,B

第7题:

You specified segment space management as automatic for a tablespace. What effect would this have on space management?()

  • A、Extents would be managed by the freelists.
  • B、The segment would be managed by bitmaps.
  • C、The segment would be managed by the freelists.
  • D、Free space would be managed by the data dictionary.

正确答案:B

第8题:

The user HR receives the following error while inserting data into the TTK table: ERROR at line 1:  ORA-01653: unable to extend table HR.TTK by 128 in tablespace SMDUpon  investigation, you find that SMD is a small file tablespace.  Which three action would allow the user to insert data()

  • A、Add a data file to the SMD tablespace.
  • B、Add a data file to the temporary tablespace associated with the user HR.
  • C、Resize the data file associated with the SMD tablespace to make it larger.
  • D、Alter the data file associated with the SMD tablespace to grow automatically.
  • E、Change the segment space management for the SMD tablespace to automatic. n segments is managed through free lists.

正确答案:A,C,D

第9题:

You use the segment advisor to help determine objects for which space may be reclaimed. Which three statements are true about the advisor given by the segment advisor?()

  • A、It may advise the use of online table redefinition for tables in dictionary managed tablespace.
  • B、It may advise the use of segment shrink for tables in dictionary managed tablespaces it the no chained rows.
  • C、It may advise the use of online table redefinition for tables in locally managed tablespaces
  • D、It will detect and advise about chained rows.
  • E、It may advise the use of segment shrink for free list managed tables.

正确答案:B,C,D

第10题:

Using a bitmap structure to manage database object space has several benefits over using freelist structures. Which three are benefits of managing space using automatic-segment-space managed objects?()

  • A、It readily responds to dynamic changes for concurrent access. 
  • B、It improves performance and space utilization in a multiple-instance environment. 
  • C、It requires fewer space related options then freelist managed structures. 
  • D、It improves performance for SYSTEM tablespaces where a high degree of concurrency is required.

正确答案:A,C,D

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