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: Oct 27, 2025

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Question 1

You are successfully connected to your MySQL HeatWave DB system using MySQL Shell. Which command can you use to verify the connection and confirm you are accessing the HeatWave layer?

A : SHOW SCHEMAS; - This command lists all available schemas in the database.

B : SELECT * FROM SYS.STORAGE_POOL; - This command retrieves information about the HeatWave storage pool.

C : SHOW ENGINE; - This command displays the currently active storage engine, indicating HeatWave if connected correctly.

D : SELECT COUNT(*) FROM INFORMATION_SCHEMA.TABLES; - This command counts the total number of tables in the database.

E : SHOW VARIABLES WHERE VARIABLE_NAME LIKE '%HEATWAVE%'; - This command displays all MySQL variables related to HeatWave settings.

Answer: C

Question 2

You have provisioned a MySQL HeatWave DB system in your VCN and want to connect using MySQL Shell from your local machine. Which additional configuration is necessary to establish a secure connection?

A : Configure a bastion service in your VCN and access the DB system through the bastion instance-s internal IP address.

B : Enable SSH public key authentication on the DB system and utilize the \connect command with the public endpoint IP address and private key.

C : Grant your user account the connect privilege for the database and use the mysql command with the DB system-s public endpoint IP address and username/password.

D : Create a route table entry in your VCN routing traffic from your local machine-s subnet to the DB system-s subnet directly.

E : Configure a VPN connection between your local machine and the VCN containing the DB system and connect using the private endpoint IP address.

Answer: B

Question 3

What additional configuration is required within the HeatWave DB system to enable OCI IAM-based authentication for user access?

A : No additional configuration is needed, OCI IAM automatically integrates with HeatWave.

B : The HeatWave Administrator needs to create and map database roles to corresponding OCI IAM groups or users.

C : A custom authentication plugin needs to be developed and deployed within the HeatWave instance.

D : The HeatWave system administrator must configure the OCI IAM service with specific policies for database access.

E : The database schema needs to be modified to accommodate the OCI IAM user identifiers.

Answer: B

Question 4

How does the MySQL HeatWave architecture handle data distribution and access across multiple HeatWave Compute Nodes?

A : Broadcast: All nodes receive and process every query, leading to redundant work and potentially decreased performance.

B : Master-slave: One node acts as the master and receives all queries, while other nodes act as slaves and only execute the tasks assigned by the master.

C : Hash partitioning: Data is distributed and stored on specific nodes based on a hashing algorithm, ensuring efficient data access and parallel query execution.

D : Round-robin: Queries are sent to nodes in a circular fashion, potentially leading to uneven workloads and performance bottlenecks

Answer: C

Question 5

You have a MySQL DB system with five active read replicas. The workload consists of 5% writes and 95%

reads.

Which connection method provides the fastest query response time?

A : Connect to the source DB system to perform read-only operations.

B : Connect to a specific read replica to perform read-only operations.

C : Connect to the read replica load balancer to perform read-only operations.

D : Connect to the read replica load balancer to perform read/write operations.

Answer: C

Page: 1 / 40

Total 200 Questions | Updated On: Oct 27, 2025

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