Free Oracle 1Z0-915-1 Exam Questions

Become Oracle Certified with updated 1Z0-915-1 exam questions and correct answers

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Total 200 Questions | Updated On: Dec 16, 2025

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Question 1

You're setting up inbound replication from an on-premises MySQL database to your MySQL HeatWave service in OCI. Which connectivity option offers the highest security and reliability for data transfer?

A : Configure direct TCP/IP connection between the on-premises database and HeatWave service.

B : Utilize Oracle GoldenGate with Secure Sockets Layer (SSL) encryption for data replication.

C : Establish connection through OCI VPN Connect with IPSec tunnel encryption.

D : Implement Oracle Cloud Infrastructure Object Storage as an intermediate staging point for data.

Answer: B

Question 2

You want to connect your application to a read replica of your MySQL HeatWave service in OCI. Which connection string element is crucial for specifying the read replica endpoint?

A : The HeatWave service name

B : The database name

C : The read replica endpoint URL

D : The HeatWave cluster identifier

Answer: C

Question 3

Which type of configuration variables CANNOT be modified in MySQL custom configurations?

A : Initialization variables

B : User variables

C : System variables

D : Default user variables

Answer: A

Question 4

Which backup method utilizes minimal network resources and complies with security best practices?

A : Offline backup using the HeatWave Administration Console

B : Online backup with RMAN to Object Storage via a public endpoint

C : Online backup with the HEATWAVE_FULL_BACKUP tool to a local NVMe disk

D : Online backup with Data Guard to another HeatWave service in a separate VCN

Answer: A

Question 5

You are experiencing slow query performance in your MySQL HeatWave service. You notice the hs_scan_batch_size dynamic variable is set to a low value. What impact will increasing this variable likely have?

A : Reduce memory usage within the HeatWave cluster

B : Decrease the overall number of database scans

C : Increase the number of rows processed per scan, potentially improving performance

D : Require a HeatWave service restart for the change to take effect

Answer: C

Page: 1 / 40

Total 200 Questions | Updated On: Dec 16, 2025

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