Free Oracle 1Z0-908 Exam Questions

Become Oracle Certified with updated 1Z0-908 exam questions and correct answers

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Total 392 Questions | Updated On: Jan 29, 2026

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Question 1

You are using the Performance Schema to investigate replication on a slave which has a single master.

The option slave-parallel-type is set to DATABASE.

Assume that all instruments and consumers are enabled and all threads are instrumented.

Which two facts can be concluded from the given output? (Choose two.)

A : The salve has two intermediate relay slaves connected to it.

B : The slave is configured with slave_parallel_workers= 4.

C : At most, two schemas are being updates concurrently.

D : THREAD_ID 21 has stopped running.

E : The slave cannot process the relay log fast enough to use all threads.

F : The server needs more cores to use all slave threads.

Answer: A,B

Question 2

Your MySQL server was upgraded from an earlier major version.

The sales database contains three tables, one of which is the transactions table, which has 4 million rows.

You are running low on disk space on the datadir partition and begin to investigate.

Examine these commands and output:

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Which two statements are true? (Choose two.)

A : Executing SET GLOBAL innodb_row_format=COMPRESSED and then ALTER TABLE transactionswill free up disk space.

B : Executing ALTER TABLE transactions will enable you to free up disk space.

C : Truncating the sales and leads table will free up disk space.

D : Truncating the transactions table will free up the most disk space.

E : The transactions table was created with innodb_file_per_table=OFF.

Answer: A

Question 3

Which three methods will show the storage engine for the Country table? (Choose three.)

A : SHOW CREATE TABLE Country;

B : SHOW ENGINE Country STATUS;

C : SHOW TABLE STATUS LIKE ‘Country’;

D : SELECT ENGINE FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_NAME= ‘Country’;

E : SELECT ENGINE FROM INFORMATION_SCHEMA.ENGINES WHERE TABLE_NAME= ‘Country’;

Answer: A,C,D

Question 4

Consider the three binary log files bin.00010, bin.00011, and bin.00012 from which you want to restore data.

Which method would use mysqlbinlog for greater consistency?

A : shell> mysqlbinlog bin.00010 | mysql shell> mysqlbinlog bin.00011 | mysql shell> mysqlbinlog bin.00012 | mysql

B : shell> mysqlbinlog bin.00010 bin.00011 bin.00012 | mysql

C : shell> mysqlbinlog – restore bin.00010 bin.00011 bin.00012

D : shell> mysqlbinlog – include-gtide=ALL bin.00010 bin.00011 bin.00012 | mysql

Answer: B

Question 5

Examine this statement, which executes successfully:

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You want to improve the performance of this query:

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Which change enables the query to succeed while accessing fewer rows?

A : ALTER TABLE world.city ADD SPATIAL INDEX (Name);

B : ALTER TABLE world.city ADD SPATIAL INDEX (Population);

C : ALTER TABLE world.city ADD INDEX (Population);

D : ALTER TABLE world.city ADD INDEX (Name);

E : ALTER TABLE world.city ADD FULLTEXT INDEX (Name);

F : ALTER TABLE world.city ADD FULLTEXT INDEX (Population);

Answer: B

Page: 1 / 79

Total 392 Questions | Updated On: Jan 29, 2026

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