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: Dec 05, 2025

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Question 1

On a master server that is using Statement-based replication a table of log data has become very large. You decide to delete 100,000 rows.

Which two methods can be independently invoked to ensure that the delete is properly propagated to the slave? (Choose two.)

A : Use the LIMIT clause to limit the deletion to 100,000 rows.

B : Change the replication mode to MIXED before issuing any delete statements when the LIMIT clause is used.

C : Use the LIMIT clause in conjunction with the ORDER BY clause.

D : Use the data modification is non-deterministic, the query optimizer will resolve any potential issues.

Answer: B,C

Question 2

Which two statements are true about using MySQL Enterprise Monitor Query Analyzer? (Choose two.)

A : The single query QRTi pie chart in the Query Analyzer view is based on the average execution of all statements.

B : It is possible to retrieve a normalized statement, but never the exact statement that was executed.

C : It is possible to configure the Query Analysis built-in advisor to get notified about slow query execution.

D : It is possible to list and analyze statements in an arbitrary graph range selection from timeseries graphs.

E : It is possible to import data into the Query Analyzer from heterogeneous sources, such as CSV.

Answer: C,D

Question 3

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

Question 4

You are considering using file-system snapshots to back up MySQL.

Which three statements are true? (Choose three.)

A : They take roughly twice as long as logical backups.

B : They allow direct copying of table rows with operating system copy commands.

C : They work best for transaction storage engines that can perform their own recovery when restored.

D : The backup window is almost zero from the perspective of the application.

E : They do not back up views, stored procedures, or configuration files.

F : There is a slight performance cost while the snapshot is active.

G : They do not use additional disk space.

Answer: A,C

Question 5

Which three statements are true about memory buffer allocation by a MySQL Server? (Choose three.)

A : Global buffers such as the InnoDB buffer pool are allocated after the server starts, and are never freed.

B : Thread buffers are allocated when a client connects, and are freed when the client disconnects.

C : Buffers that are needed for certain operation are allocated when the operation starts, and freed when it ends.

D : User buffers are allocated at server startup and freed when the user is dropped.

E : All dynamic buffers that are set with a SET GLOBAL statement immediately get allocated globally, and are never freed.

Answer: A,C

Page: 1 / 79

Total 392 Questions | Updated On: Dec 05, 2025

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