Which background process is responsible for writing the dirty buffers from the write list to the data files during a checkpoint?()A、CKPTB、SMONC、LGWRD、DBWnE、ARCn

题目

Which background process is responsible for writing the dirty buffers from the write list to the data files during a checkpoint?()

  • A、CKPT
  • B、SMON
  • C、LGWR
  • D、DBWn
  • E、ARCn
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相似问题和答案

第1题:

Which Oracle background process is responsible for providing information about the instance name associated with the service handlers and services to the listener?()

  • A、PMON
  • B、SMON
  • C、LGWR
  • D、CKRT

正确答案:A

第2题:

Which statement is true regarding the Archiver (ARCn) process,archived log files,and recovery? ()

  • A、A database backup, combined with archived redo log files, guarantees that all committed data can be recovered to the point of failure. 
  • B、During recovery the ARCn background process copies its redo entries identified for recovery by the control file to the data files. 
  • C、After each write to an archived log, the mandatory background process ARCn writes its log sequence number and the first and last SCN number within the log sequence to the control file. 
  • D、At database recover time, and archived redo log is uniquely identified for recovery use by its redo thread number and destination ID number retrieved from the control file.

正确答案:A

第3题:

As shown in the diagram, in-memory statistics are transferred to the disk at regular intervals. Which background process performs this activity?()

A. CKPT

B. SMON

C. MMON

D. DBWR


参考答案:C

第4题:

Which Oracle background process frees SGA resources that were allocated to a user process that failed?()

  • A、PMON
  • B、SMON
  • C、CKPT
  • D、LGWR
  • E、ARCn

正确答案:A

第5题:

如果服务器进程无法在数据缓冲区中找到空闲块以添加从数据文件中读出的数据块则系统会启动()进程。

  • A、CKPT
  • B、SMON
  • C、LGWR
  • D、DBWn

正确答案:D

第6题:

Which background process sequentially writes Flashback Database data from the flashback buffer to the Flashback Database logs?()

  • A、 DBWn
  • B、 RECO
  • C、 RVWR
  • D、 LGWR

正确答案:C

第7题:

Which  statements are true about checkpointing()

  • A、The checkpoint frequency decreases with the smaller redo log file size.
  • B、It ensures that all committed data is written to the data files during normal shutdown.
  • C、The frequent full checkpoint in a database can cause the overall degradation of the database performance.
  • D、It prompts the Checkpoint (CKPT) process to write data to the data files and redo information to the onlineredo log files

正确答案:B,C

第8题:

Whichbackgroundprocessisresponsibleforwritingthedirtybuffersfromthewritelisttothedatafilesduringacheckpoint?()

A.CKPT

B.SMON

C.LGWR

D.DBWn

E.ARCn


参考答案:D

第9题:

以下()进程负责将Redo Log buffer里的数据写入Online redo log files。

  • A、CKPT
  • B、ARCn
  • C、LGWR
  • D、DBWn

正确答案:C

第10题:

Which background process does Automatic Shared Memory Management use to coordinate the sizing of memory components?()

  • A、PMON
  • B、SMON
  • C、MMNL
  • D、MMAN
  • E、MMON

正确答案:D

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