Oracle MCQ

Oracle MCQ

  • Sharad Jaiswal
  • 25th Nov, 2021

We have listed here the best Oracle MCQ Questions for your basic knowledge of Oracle MCQ. This Oracle MCQ Test contains 20+ Oracle Multiple Choice Questions. You have to select the right answer to every question to check your final preparation for the Oracle MCQ Interview or Exams.

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Practice Best Oracle MCQ Questions;

1) Which processes is an instance made of oracle?

  • A. Data processes
  • B.Data Segment
  • C.Datafiles
  • D.Oracle background processes

2) The redo log buffer and Shared pool are elements

  • A. PGA
  • B.SGA
  • C.CGA
  • D.Session area

3) Which of the following scenarios ends an Oracle transaction?

  • A. COMMIT
  • B.ROLLBACK
  • C.Terminates
  • D.All of the above

4) Smallest Unit of storage in an database?

  • A. Data Block
  • B.Data File
  • C.Data Segment
  • D.Extent

5) ________Oracle backup and recover file containes userr and system data

  • A. Control file
  • B.OnLine ReDo file
  • C.Datafile
  • D.Offline ReDo file

6) What is the use of extent in oracle?

  • A. Stores user data within the database
  • B.Minimize the amount of wasted (empty) storage
  • C.Stores rollback information used when data must be rolled back
  • D.None of the above

7) In Oracle, which of below are types of segments?

  • A. Data Segment
  • B.Object Segment
  • C.Permanent Segment
  • D.None of the above

8) Which kind of components comprise an Oracle architecture?

  • A. Datafiles
  • B.Tablespaces
  • C.Database related background processes
  • D.All of the above

9) ............. is used to logically group data together.

  • A. Object
  • B.Datafiles
  • C.Database
  • D.Tablespace

10) Which prefixes are available to Oracle triggers?

  • A. :old
  • B.:new
  • C.Both :old & :new
  • D.None of the above

11) The Oracle database have ............ layers.

  • A. 2
  • B.4
  • C.6
  • D.8

12) ............ is the smallest unit of storage in an Oracle database?

  • A. Extent
  • B.Data File
  • C.Segment
  • D.Data Block

13) Which of the following package procedure is UNRESTRICTED In Oracle?

  • A. USER_EXIT
  • B.CALL_INPUT
  • C.CLEAR_BLOCK
  • D.EXECUTE_QUERY

14) Oracle server configuration is dedicated for ............

  • A. Many server processes – Many user processes
  • B.One server process – Many user processes
  • C.One server process – One user process
  • D.None of the above

15) Which kind of system variable is used to refer DATABASE TIME ?

  • A. $$time$$
  • B.$$dbtime$$
  • C.$$datetime$$
  • D.None of the above

16) Which processes is an instance made of Oracle?

  • A. Data processes
  • B.Memory processes
  • C.Oracle background processes
  • D.All of the above

17) Where is the data dictionary kept?

  • A. SYSTEM tablespace
  • B.Stack Space
  • C.Data file
  • D.None of these

18) You can use the DROP statement to remove structures from the database.

  • A. True
  • B.False

19) To obtain the structure of an Oracle table, the command to use is:

  • A. DESCRIBE [TableName]
  • B.DESCRIBE STRUCTURE [TableName]
  • C.DESC TABLE [TableName]
  • D.STRUCTURE [TableName]

20) An Oracle System Change Number (SCN):

  • A. is a value that keeps track of explicit locks.
  • B.is incremented whenever a deadlock occurs.
  • C.is a value that is incremented whenever a dirty read occurs.
  • D.is a value that is incremented whenever database changes are made.

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