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: Jun 24, 2025

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Question 1

You are evaluating cost-effectiveness for your MySQL HeatWave FastConnect connection. Which factor significantly impacts the pricing of the service?

A : The chosen OCI region

B : The type of encryption used

C : The chosen FastConnect provider

D : The overall data transfer volume

Answer: D

Question 2

You have a DRG attached to a VCN containing your MySQL HeatWave DB system. You need to restrict access to the database from another VCN within the same region. Suggest most effective way to achieve this using DRG and security list configurations?

A : Configure a route table in the remote VCN to direct traffic to the HeatWave system through the DRG.

B : Create a security list rule in the DRG allowing inbound traffic from the HeatWave system-s subnet to the remote VCN-s subnet.

C : Modify the DRG attachment to restrict access from the remote VCN-s CIDR block.

D : Implement a security list rule in the remote VCN-s subnet denying inbound traffic from the HeatWave system-s subnet.

E : Use IAM policies to control user permissions and restrict access at the database level.

Answer: D

Question 3

You need to update the query_cache_size configuration parameter in your MySQL HeatWave service. Which of the following methods is recommended for a production environment with minimal disruption?

A : Modify the my.cnf file and restart the HeatWave service

B : Use the ALTER SYSTEM statement directly in the HeatWave SQL shell

C : Update the parameter through the Oracle Cloud Infrastructure (OCI) Console

D : Use the SET GLOBAL statement in a MySQL client session

Answer: C

Question 4

During a MySQL HeatWave HA cluster upgrade, you initiate a planned switchover. Which two actions are most likely to occur during this process?

A : Automatic failover triggers if the upgrade takes longer than expected.

B : All user connections are paused and resumed to the new primary node.

C : Data is replicated asynchronously to the new primary node during switchover.

D : The previous primary node becomes completely unavailable after the switch.

E : New queries are directed to the secondary node even before the switchover finishes

Answer: B,C

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: Jun 24, 2025

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