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. 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?

Create an index-organized table to store the data.

Drop the primary key

Increase the PCTFREE value set for table blocks.

Create more indexes on the table.

Question 1 of 40

2. When choosing a character set and national character set, which of the following factors should not enter into consideration?

Oracle supports only English-like languages as its character set for entering SQL and PL/SQL commands

Your character set must either be US7ASCII or a superset of it.

Your national character set and character set should be closely related where possible.

You can use variable-length multibyte character sets as both character sets on your database.

Question 2 of 40

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

Redo entry generated for committed transaction.

Acquired row or table locks are released.

Acquired undo segment locks are released.

Cached data is saved immediately to disk.

Question 3 of 40

4. 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?

drop tablespace including contents

alter database datafile offline drop

drop tablespace cascade constraints

alter tablespace offline immediate

Question 4 of 40

5. Which of the following clauses in a create user statement restricts the number of tables a user can add to a tablespace?

identified by

profile

quota on

default tablespace

Question 5 of 40

6. The DBA issues the following statement:
CREATE USER APPLDBA
IDENTIFIED BY APPLDBA;
What profile will user APPLDBA have?

None

CONNECT

DEFAULT

DBA

Question 6 of 40

7. You need to identify the remaining free space in a tablespace. From which of the following views would you get this information most easily?

DBA_TABLESPACES

V$TABLESPACE

DBA_EXTENTS

DBA_FREE_SPACE

Question 7 of 40

8. 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?

Bring the tablespace online

Physically move the datafile to the new location

Bring the tablespace offline

Execute IMPORT to load the new metadata

Question 8 of 40

9. 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?

Profiles

Parameter files

Undo segments

Roles

Question 9 of 40

10. 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 SESSIONS_PER_USER = 2 in init.ora

Set LICENSE_MAX_SESSIONS = 1 in init.ora

Set SESSIONS_PER_USER in the DEFAULT profile to 1

Set IDLE_TIME in the DEFAULT profile to 1

Question 10 of 40

11. 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 in V$DATABASE.

Values specified for CONTROL_FILES.

Oracle knows automatically where to look.

Values specified for BACKGROUND_DUMP_DEST.

Question 11 of 40

12. 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?

LGWR

SMON

DBW0

PMON

ARCH

Question 12 of 40

13. Which of the following choices identifies a constraint on performing alter tablespace resize operation if the intended size of the tablespace is larger than the tablespace’ s current size?

Presence of objects in the datafile resized

Availability of space on disk where datafiles are added

Whether AUTOEXTEND is in use on datafiles for the tablespace

Availability of space in memory for temporary storage of blocks in tablespace

Question 13 of 40

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

Based on the number of blocks in associated indexes only

Based on the number of blocks in the table only

Based on the size of your shared pool

No Answer is Correct

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

Question 14 of 40

15. Your Oracle EMP table contains many unique values in the FIRST_NAME column. You want to index that column to take advantage of this fact in query access. Which of the following indexes might you use?

Bitmap Index

Simple B-tree index

reverse key index

Function-based index

Question 15 of 40

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

update

insert

select

delete

Question 16 of 40

17. Which one of the following statements is incorrect with respect to RMAN's CROSSCHECK command?

RMAN automatically deletes information pertaining to the image copy from the repository if it is physically not available.

It updates the non-availability of the files by updating the information in the recovery catalog with the appropriate status.

It identifies the backup sets or image copies that are either corrupted or have been accidentally deleted.

RMAN crosschecks the availability of the backup sets by verifying the information stored in its repository with the backup sets that are physically available.

Question 17 of 40

18. Which of the following is the init.ora parameter that indicates the size of each buffer in the buffer cache?

ROLLBACK_SEGMENTS

DB_BLOCK_BUFFERS

DB_BLOCK_SIZE

BUFFER_SIZE

Question 18 of 40

19. 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

NLS_DATE_FORMAT

DBA_DATES

V$NLS_VALID_VALUES

Question 19 of 40

20. User JOHN has create any table privilege with administrative abilities on that privilege. Which of the following statements show how to revoke the administrative component from JOHN without limiting her overall ability to create tables?

revoke create any table from JOHN; then grant create any table to JOHN;

revoke admin option from create any table; then grant create any table to JOHN;

None of these

revoke admin option from create any table;

Question 20 of 40

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

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

You need to keep the tablespace in backup mode explicitly.

You need to make the tablespace offline.

RMAN does not require the tablespace to be in backup mode

Question 21 of 40

22. On an Oracle server installation, which of the following reorganizations of your indexes would be appropriate in order to improve performance of queries on tables containing all words in the dictionary starting with the letter 'S'?

Convert your bitmap index to a B-tree index.

Convert your reverse-key index to a B-tree index.

Convert your B-tree index to a reverse-key index.

Convert your B-tree index to a bitmap index.

Question 22 of 40

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

The listener process obtains information for the user.

The DBW0 process obtains information for the user

The server process obtains information for the user.

The user process obtains information on its own.

Question 23 of 40

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

Buffer cache

Library cache

Row cache

Session UGA

Question 24 of 40

25. 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?

Grant the CONNECT role to the user

Reset the user's password

Grant create table privileges to the user

Unlock the user's account

Question 25 of 40

26. 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 modify column

alter table set unused column

alter table drop column

truncate table

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$DATABASE

V$CONTROLFILE_RECORD_SECTION

V$CONTROLFILE

V$PARAMETER

Question 27 of 40

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

From your init.ora file or spfile

From Oracle default values in OS

From the default settings for the tablespace

From the default settings in your redo log file

Question 28 of 40

29. You are performing the steps that will create your Oracle data dictionary. The objects in the Oracle data dictionary are part of which of the following schemas?

SYS

SCOTT

PUBLIC

SYSTEM

Question 29 of 40

30. 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_CODE

RC_STORED_SCRIPT_LINE

Question 30 of 40

31. 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 the shared pool is flushed

When a time-out occurs

When a log switch occurs

When a checkpoint occurs

Question 31 of 40

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

identified by

default tablespace

profile

temporary tablespace

Question 32 of 40

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

In the PGA

In the redo log buffer

In the shared pool area

Large area

In the buffer cache keep area

Question 33 of 40

34. 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?

utlrp.sql

pwdORCL.ora

control01.ctl

init.ora

Question 34 of 40

35. The location of indexes in a database and the size of those indexes is information that can be found in which of the following dictionary views?

DBA_SEGMENTS

DBA_OBJECTS

DBA_INDEXES

DBA_FREES_SPACE

Question 35 of 40

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

Password

SID

Username

Serial number

Question 36 of 40

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

SYS.AUD$

V$DATABASE

DBA_TABLES

EMP

Question 37 of 40

38. You are analyzing how Oracle processes user statements. SQL and PL/SQL parse information is stored in which of the following database memory areas?

PGA

Row cache

Dictionary cache

Buffer cache

Library cache

Question 38 of 40

39. 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 immediate

shutdown abort

shutdown transnational

shutdown normal

Question 39 of 40

40. You alter a tablespace’ s default storage settings in the Oracle database to increase the size of initial extents. Which of the following choices identifies when the change will take effect for tables that already exist in that tablespace?

The change takes effect when data is removed from the table.

The change takes effect when data is added to the table.

The change will not take effect for existing tables.

The change takes effect immediately.

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!!!!

Related Articles
How to prepare for OCI Associate Certified Examination : This post covers on how to prepare for Oracle cloud infrastructure Associate Architect examination (1Z0 932 /1072)
Oracle sql online test :Check out this Oracle sql online test for interview preparation & certification. This will help in checking your understanding on Oracle SQL
Tips for Passing OCI examination : Here is Oracle provided tips to clear OCI certification
Oracle Performance & Tuning Quiz : Check out this Oracle performance online test for interview preparation & certification. This will help in checking your understanding on Oracle SQL
Oracle Database Quiz : This is a Oracle Database Quiz to check your understanding on Oracle concepts. This will be helpful for interview and certification examination
oracle quiz : This is a online Oracle Quiz to check your understanding on Oracle stuff like Truncate,delete, drop ,constraints, select query,distinct and many more

Instructions for online test

Reader Interactions

Leave a Reply Cancel reply