Oracle Architecture MCQ

This Oracle Architecture MCQ test check the understanding on various topics like Recovery Manager (RMAN), Oracle Architecture concept like shared pool ,PGA, Library cache size,Backup & recovery , Oracle Memory structure, Background processes, Dictionary views , alert logs ,oracle tablespace ,indexes , profiles and many more

The below test is randomized Oracle Architecture MCQ 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. Which one of the following Oracle components or products must be installed and configured to enable the secure communications between the client and the server over the network?

Connection Manager

Intelligent agent

Security server

Advanced network option

Question 1 of 40

2. What is the significance of using the command SET NEWNAME in the script shown in the following code?
Run
{
allocate channel c1 type disk;
set newname for datafile 1 to '+DATA';
restore datafile 1;
switch datafile 1;
recover datafile 1;
sql 'Alter database open';
}

Prompts the user to enter a new name after the execution of the RUN block

Specifies a new location in the RUN block where the data file needs to be restored

Control file is updated with the new location specified in the RUN block

Renames the data file in the RUN block

Question 2 of 40

3. Which one of the following options of the export utility enables data to be directly transferred to the client without the intermediate evaluation buffer?

DIRECT=Y

IGNORE=Y

CONVENTIONAL=Y

DIRECT=N

Question 3 of 40

4. which of the following components of the SGA records changes made to the database for recovery purpose

large pool

database buffer cache

shared pool

redo log buffer

Question 4 of 40

5. When can you perform a database backup using RMAN if the database is in ARCHIVLOG mode?

OPEN

MOUNT

CLOSED

NOMOUNT

RESTRICTED SESSION

Question 5 of 40

6. What must you do after the completion of copying the data files while performing online database backup?

Shut down the database gracefully and restart.

Execute the ALTER SYSTEM SWITCH LOGFILE command and copy the archive log files since the beginning of online backup.

Execute the ALTER SYSTEM CHECKPOINT command.

Back up the online redo log files.

Question 6 of 40

7. which of the following views contains information about overall system statistics, both previously and currently connected

v$systat

v$sesstat

v$sgastat

v$statname

Question 7 of 40

8. Assume that you need to restore and recover a database that's operating in ARCHIVELOG mode. The archive log files available for recovery start from log sequence 21156 to 21190. If the archived log files with sequence number 21187, 21184, and 21180 are corrupted, then until which log sequence can you recover the database?

21184

21187

21190

21180

Question 8 of 40

9. Which one of the following commands can you use to display whether or not the automatic archiving feature is enabled?

ARCHIVE LOG NEXT

ARCHIVE LOG STATUS

ARCHIVE LOG LIST

ARCHIVE LOG REPORT

Question 9 of 40

10. Which one of the following parameters when specified determines the maximum number of the files that can be stored in each backup set?

MAXSETSIZE

FILESPERSET

FILESPERBACKUP

BACKUPPERSET

Question 10 of 40

11. Which one of the following views would you query to obtain information about data files that need recovery?

V$DATAFILE_COPY

V$DATAFILE_RECOVERY

V$DATAFILE_HEADER

V$DATAFILE

Question 11 of 40

12. The buffers in the database buffer cache that are currently being accessed by a server process are referred to as?

Free buffers

Pinned buffers

Reuse buffers

Dirty buffers

Question 12 of 40

13. if the init.ora optimizer mode is set to choose, but no statistics have been generated for the application’s tables and indexes, which optimizer mode will oracle user

hint

none of the above

rule

cost

Question 13 of 40

14. which of the following lock type is the most restrictive

unique

exclusion

exclusive

None of the above

Question 14 of 40

15. an oracle instance is made up of

sga and data file , control files , and redo logs

sga and the init.ora

sga , alert log, trace file

sga and background process

Question 15 of 40

16. Which command will open a standby database in read-only mode?

STARTUP READ ONLY;

ALTER DATABASE MOUNT READ ONLY;

ALTER DATABASE OPEN READ ONLY;

ALTER DATABASE READ ONLY;

Question 16 of 40

17. throughput is a measure of

how fast a user’s pc can refresh the screen with new data

how long it takes for oracle to find data without using an index

the time it takes for a single user to receive a result set back when working from within the application

how much processing the system can do during a given amount of time

Question 17 of 40

18. which of the following background processes detects failed user process and roll backs

DBW0

SMON

CKPT

PMON

Question 18 of 40

19. which lock type is taken out when creating, dropping or altering a table

exclusive

restrictive

explicit

shared

Question 19 of 40

20. Due to a media failure the user10.dbf data file was lost. Which one of the following commands must DBA use at the RMAN prompt, to copy the data files from the backup location to their default location before performing recovery operations?

RESTORE

RECOVER

REINSTATE

ALLOCATE

Question 20 of 40

21. In which one of the following loading methods does SQL*Loader compete with the other processes to acquire buffer resources?

Distributed path load

Conventional path load

None of the above

Direct path load

Question 21 of 40

22. the alert log contains information on all but which of the following

creation of new database users

instance startup and shutdown

all of the above are in the alert log

redo log switches

Question 22 of 40

23. which dba view would show storage, row, and block information for an table

dba_tab_privs

dba_table_size

dba_objects

dba_tables

Question 23 of 40

24. Which one of the following views must you query from the recovery catalog database to obtain information about the backup sets that were created using RMAN?

V$BACKUPSET

RC_DATABASE

V$BACKUP_SET

RC_BACKUP_SET

Question 24 of 40

25. Which one of the following commands must be issued to remove a stored script from the recovery catalog?

UNCATALOG SCRIPT

DELETE SCRIPT

ERASE SCRIPT

REMOVE SCRIPT

Question 25 of 40

26. To enable a database to have more than one service associated with it, the connect descriptor SID parameter in the tnsnames.ora file has been replaced by which two parameters?(Choose two)

INSTANCE_NAME.

LISTENER_NAME.

SERVICE _NAME

DISPATCHERS.

Question 26 of 40

27. Among the listed recovery method types, which recovery requires the DBA to explicitly issue a recovery command?

Crash recovery

Media recovery

Thread recovery

Instance recovery

Question 27 of 40

28. response time is a measure of

the time it takes for a single user to receive a result set back when working form within a application

how much processing the system can do during a given amount of time

how long it takes for oracle to find data without using an index

how fast user’s pc can refresh the screen with new data

Question 28 of 40

29. Which three statements about fine-grained access control are true?

Security cannot be bypassed as it built into the database server.

The application context is required.

The application context is not required, but recommended.

Security cannot be bypassed as it is built into each application.

Security can be built in the database server instead of each application.

Question 29 of 40

30. Which one of the following statements about the tnsping utility is correct?

It requires the username and password to check the connectivity of the service.

It helps you to determine whether or not the Oracle database is running.

It establishes a session with the database and checks the connectivity of the service.

It does not require the username and password to check the connectivity of the service.

Question 30 of 40

31. which of the following factors would not make a column a good candidate for b-tree index

none of the above

the column frequently used in sql statement where clause

most queries on the table return only small portion of all row

the data in the column has low cardinality

Question 31 of 40

32. Prior to performing an incomplete database recovery, what is the most important task that you are supposed to perform as a DBA?

Restore the control files.

Perform a full backup.

Restore the archived redo log files.

Open the database in NOMOUNT mode.

Question 32 of 40

33. Which Oracle background process frees SGA resources that were allocated to a user process that failed?

LGWR

SMON

PMON

ckPt

Question 33 of 40

34. Which Oracle process is responsible for archiving the online redo log files when the automatic archiving feature is enabled in ARCHIVELOG mode?

LGWR

SMON

PMON

DBWn

ARCn

Question 34 of 40

35. which of the following components of SGA caches recently accessed data , index and rollback block

redo log buffer

database buffer cache

large pool

shared pool

Question 35 of 40

36. Which one of the following options would you use with RMAN to back up archive log files along with other files?

PLUS archivelog

INCLUDE archivelog

ADD archivelog

ENABLE archivelog

Question 36 of 40

37. Which one of the following configuration files can be used to implement the host naming method?

sqlnet.ora, names.ora

sqlnet.ora, tnsnames.ora

sqlnet.ora

host.ora, tnsnames.ora

tnsnames.ora, sqlnet.ora, host.ora

Question 37 of 40

38. Due to a media failure, all the members that are part of an online redo log group are lost. Under what conditions can you still recover the database without data loss?

The lost redo log group is not the CURRENT group but has not yet been archived.

You cannot perform recovery when all the members associated with an online redo log group are lost

The lost redo log group has already been archived.

The lost redo log group is the CURRENT group.

Question 38 of 40

39. Which one of the following files contains records that are rejected by SQL*Loader due to invalid input format?

log

Control

Bad

Parameter file

Discard

Question 39 of 40

40. What is the most important action a DBA must perform after changing the database from NOARCHIVELOG TO ARCHIVELOG?

Manually switch the log files

Perform a full database logical backup

Perform a full database backup

Shutdown normal and restart the database

Question 40 of 40

I hope you like this Oracle Architecture MCQ 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
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
Oracle DBA quiz : this is a oracle dba quiz to check your understanding on DBA concepts.This will help in Passing oracle certification examination and the interview also
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 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
https://en.wikipedia.org/wiki/Oracle_Database

Instructions for online test

Reader Interactions

Leave a Reply Cancel reply