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 plan to update the HeatWave service version with minimal downtime for ongoing queries. Which update approach and strategy should you utilize to achieve this goal?

A : Perform a rolling update with online schema migration followed by service restart.

B : Apply the update directly to the running service and accept potential query interruptions.

C : Schedule the update during a maintenance window and fully restart the HeatWave service.

D : Migrate queries to a standby HeatWave cluster before updating the primary service.

Answer: A

Question 2

Which statement accurately describes the data distribution and processing within a HeatWave cluster?

A : Data is replicated across all nodes, and each node processes all queries independently.

B : Data is partitioned and stored on specific nodes, while queries are executed in parallel on all nodes.

C : A single node stores and processes all data, while other nodes act as standby replicas.

D : Data is cached in-memory on one node, and queries are offloaded to the database system for execution.

E : Queries are divided into subtasks and distributed to available nodes for parallel execution.

Answer: B

Question 3

You accidentally modified the session_cache_size dynamic variable in your MySQL HeatWave service. Which of the following immediate effects will you observe?

A : Increased HeatWave cluster resource utilization

B : Recalculations of existing materialized views

C : Automatic failover to a standby HeatWave cluster

D : Changes in query execution plans for all running queries

Answer: A

Question 4

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 5

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

Page: 1 / 40

Total 200 Questions | Updated On: Dec 16, 2025

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