Practice online oracle dba quiz

I am presenting here the Oracle DBA quiz. I hope you like it

This Oracle DBA online test check the understanding on various topics like RMAN, Oracle Structures,Backup & recovery , Oracle Memory structure, Background processes, Dictionary views , alert logs ,oracle tablespace ,indexes , profiles and many more

The below test is randomized Oracle DBA quiz and select 40 questions from the set of many questions,so each time you try to attempt it, you will get different questions in different order and option would also be in different order, So it will be fun practicing with this tool. You can try as many times as you want till you feel comfortable about it

Instructions for online test

1.This quiz consists of 40 questions .It is recommended to complete the test in 60 min
2. It consists both single choice and more than one choice questions to test your knowledge
3. You can press the submit button at the end of your test and get the final score
4.You will also get the know the correct choice after you finished the test.

1. You have assigned 10 tables to the keep pool. How should you determine the appropriate size for your keep pool?

Based on the size of your shared pool

Based on the number of blocks in associated indexes only

Based on the number of blocks in the table plus blocks in associated indexes

Based on the number of blocks in the table only

No Answer is Correct

Question 1 of 40

2. Which of the following choices lists an alter user option that can be executed by the user herself or himself?

temporary tablespace

default tablespace

identified by

profile

Question 2 of 40

3. You are using locally managed tablespaces in Oracle. Which of the following choices best describes the way Oracle implements this feature in the database?

Using the data dictionary on the local database

Using a flat file in the local directory storing the datafile

Using the data dictionary in a distributed database

Using a bitmap in the space header segment

Question 3 of 40

4. The user is selecting data from the Oracle database. Which of the following processes handles obtaining data from Oracle for that user?

The server process obtains information for the user.

The DBW0 process obtains information for the user

The listener process obtains information for the user.

The user process obtains information on its own.

Question 4 of 40

5. Session information when dedicated servers are being used is stored where in the Oracle database?

In the PGA

Large area

In the shared pool area

In the redo log buffer

In the buffer cache keep area

Question 5 of 40

6. Which one of the following statements is true while taking tablespace backups using RMAN?

RMAN does not require the tablespace to be in backup mode

You need to keep the tablespace in backup mode explicitly.

RMAN generates extra redo information during online backups when compared with user-managed online backups.

You need to make the tablespace offline.

Question 6 of 40

7. Records from the data dictionary information are stored in which of the following database memory areas?

Library cache

Row cache

Session UGA

Buffer cache

Question 7 of 40

8. You want to perform some maintenance and You issue the shutdown command at 9 p.m. on a Saturday. One hours later, the database is still in the process of shutting down. Which of the following options did you most likely use in order to shut down the database?

shutdown abort

shutdown immediate

shutdown normal

shutdown transnational

Question 8 of 40

9. Which of the following clauses are available in alter user statements but not in create user statements?

identified by

default role

profile

temporary tablespace

Question 9 of 40

10. After creating a new user for your Oracle database, a user still complains he or she cannot log in because of insufficient privileges errors. Which of the following actions should you take?

Unlock the user's account

Reset the user's password

Grant create table privileges to the user

Grant the CONNECT role to the user

Question 10 of 40

11. Information in the buffer cache is saved back to disk in each of the following situations except one. In which situation does this not occur?

When a log switch occurs

When a time-out occurs

When a checkpoint occurs

When the shared pool is flushed

Question 11 of 40

12. Which of the following operations do not require Oracle to store information in an undo segment as part of the transaction?

insert

delete

select

update

Question 12 of 40

13. Which one of the following RMAN commands is equivalent to the SQL statement ALTER DATABASE RENAME FILE ?

RENAME

CHANGE

CATALOG

SWITCH

Question 13 of 40

14. If you wished to make it so that every user in Oracle could have only one connection to the database at a time, which of the following choices identifies how you would do it?

Set LICENSE_MAX_SESSIONS = 1 in init.ora

Set IDLE_TIME in the DEFAULT profile to 1

Set SESSIONS_PER_USER in the DEFAULT profile to 1

Set SESSIONS_PER_USER = 2 in init.ora

Question 14 of 40

15. You are about to drop a tablespace. Which of the following statements can be used for dropping tablespaces that contain parent tables in foreign key relationships?

alter database datafile offline drop

drop tablespace cascade constraints

drop tablespace including contents

alter tablespace offline immediate

Question 15 of 40

16. You are defining storage for various segment types in the Oracle database. Which of the following is not a valid type of segment in Oracle?

Sequence segment

Temporary segment

Data segment

Undo segment

Question 16 of 40

17. A User accidentally drops a very critical table. What kind of failure just occurred?

Statement failure

Instance failure

Process failure

Human error

Question 17 of 40

18. Which two of the following items are required for killing a user session?

Serial number

Password

Username

SID

Question 18 of 40

19. During regular database operation, which background process will take smaller blocks of free space in a dictionary-managed tablespace and move things around to make bigger pieces of free space?

ARCH

SMON

DBW0

PMON

LGWR

Question 19 of 40

20. You are running Oracle in America in support of a financial analysis project for the government of Egypt. In order to produce reports that display money amounts as Egyptian pounds, rather than dollars, which of the following initialization parameters would be useful?

NLS_DATE_FORMAT

NLS_SORT

NLS_CURRENCY

NLS_LANG

Question 20 of 40

21. You are identifying dictionary objects in the Oracle database. Which of the following is a view in the data dictionary?

SYS.AUD$

EMP

V$DATABASE

DBA_TABLES

Question 21 of 40

22. You are considering using the MTS architecture on the Oracle database. Session information when shared servers are being used is stored where in the Oracle database?

In the PGA

In the redo log buffer

In the shared pool

In the buffer cache keep area

Large pool area

Question 22 of 40

23. You attempt to issue the alter tablespace rename datafile command in the Oracle database. Which of the following choices indicates a step that must take place after this command is issued?

Execute IMPORT to load the new metadata

Bring the tablespace offline

Bring the tablespace online

Physically move the datafile to the new location

Question 23 of 40

24. You are implementing control file multiplexing. Which of the following choices identifies how Oracle knows the locations of the control files it is supposed to maintain?

Values specified for CONTROL_FILES.

Oracle knows automatically where to look.

Values specified for BACKGROUND_DUMP_DEST.

Values specified in V$DATABASE.

Question 24 of 40

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

LCK

PMON

CKPT

SMON

Question 25 of 40

26. You are analyzing the components of the redo log mechanisms in your Oracle database. Which of the following purposes does the CKPT process serve?

Reads information into memory for users

Writes redo log information to disk

Writes dirty buffers to disk

Writes current redo log number to datafile headers

Question 26 of 40

27. You want to find out the names and locations of all control files in your database. Which two of the following performance views would you query?

V$PARAMETER

V$CONTROLFILE

V$CONTROLFILE_RECORD_SECTION

V$DATABASE

Question 27 of 40

28. As the DBA, you are attempting to limit user's misuse of Oracle's ability to use host machine resources. Which of the following features of the Oracle database is useful for this purpose?

Undo segments

Parameter files

Profiles

Roles

Question 28 of 40

29. Which one of the following RMAN views must you query to view the code of an existing stored script in the recovery catalog?

RC_SOURCE_SCRIPT

RC_STORED_SCRIPT

RC_STORED_SCRIPT_LINE

RC_STORED_SCRIPT_CODE

Question 29 of 40

30. You are attempting to clear an unarchived redo log file. In order to manually enact a log switch, which of the following statements is appropriate?

alter system

alter user

alter redo log

alter database

Question 30 of 40

31. You are working in an organization which is situated in many countries. You maintain databases in multiple countries in multiple languages. To determine the date conventions for a database in a particular country, you might use which of the following database views?

V$NLS_PARAMETERS

V$NLS_VALID_VALUES

NLS_DATE_FORMAT

DBA_DATES

Question 31 of 40

32. You need to remove a column from the database. Which of the following choices best identifies how to do so if your objective is to quickly execute the task without necessarily freeing up space in your tablespace?

alter table drop column

truncate table

alter table set unused column

alter table modify column

Question 32 of 40

33. You issue the following statement from SQL*Plus: startup mount. Where does Oracle obtain values for starting the instance?

From the default settings in your redo log file

From your init.ora file or spfile

From the default settings for the tablespace

From Oracle default values in OS

Question 33 of 40

34. When we issue the commit statement in the session, which of the following things will not occur?

Redo entry generated for committed transaction.

Cached data is saved immediately to disk.

Acquired row or table locks are released.

Acquired undo segment locks are released.

Question 34 of 40

35. Which one of the following statements is incorrect about direct-path insert operations?

Direct-path insert enables you to copy data from one table to another table within the same database.

Direct-path insert can be implemented either in the serial mode or the parallel DML mode.

Direct-path insert can be performed when using the INSERT INTO... SELECT statement.

To load data using the serial mode, you must activate the direct-path insert by specifying the SERIAL hint.

It speeds up the insert operation, bypassing the buffer cache.

Question 35 of 40

36. A DBA manages a database that is operating in NOARCHIVELOG mode. Which one of the following options should he include in his backup strategy?

Whole database backup after the database is gracefully closed

Can only perform logical backups

Cannot perform any backups in this mode

Whole database backup while the database is open

Question 36 of 40

37. You are attempting to locate your control files on an Oracle database called TEST. In which of the following files might you look for this information?

init.ora

utlrp.sql

pwdORCL.ora

control01.ctl

Question 37 of 40

38. A organization is taking online backups of the database, with the database operating in ARCHIVELOG mode. Due to a media failure they lost the SYSTEM tablespace data files. What must they do to recover the data files?

Take the tablespace offline, restore the lost file, and issue the RECOVER TABLESPACE command

Shut down the database, restore all the Oracle files, and open the database with the RESETLOGS option

Shut down the database, restore the lost file, mount the database, and recover the database

Take the tablespace offline; restore the lost file, and issue the RECOVER DATAFILE command

Question 38 of 40

39. The best choice for decreasing size requirements for tables that need only be accessed via the primary key in oracle is which of the following?

Increase the PCTFREE value set for table blocks.

Drop the primary key

Create an index-organized table to store the data.

Create more indexes on the table.

Question 39 of 40

40. You are adding redo logs to the Oracle database. Creating a new redo log adds information to which of the following Oracle resources?

Shared pool

SGA

Control file

Library cache

Question 40 of 40

I hope you like this Oracle DBA online quiz and it helps in your examination preparation. Best of Luck for the Oracle certification Examination. Please do provide feedback on it. We will also be adding more quizzes and questions in future.

Happy Learning!!!!

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