Oracle 1Z0-915-1 Practice Exam Questions & Answers
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· Last reviewed: September 23, 2026
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Exam Facts
Oracle 1Z0-915-1 Exam Details
Key details for this exam, checked against the published exam outline
65
Practice Questions (Our Bank)
- Exam Code
- 1Z0-915-1
- Full Name
- MySQL HeatWave Implementation Associate Rel 1
- Issuing Body
- Oracle
- Question Format (Our Bank)
- Multiple Choice
Practice Questions
Free 1Z0-915-1 Practice Questions
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A DB system has been deleted successfully. Which two operations are allowed on the deleted DB system? (Choose two.)
Correct Answer:
C, E
Explanation
When a DB system is configured as a replication channel target, you cannot modify its configuration while the channel is actively replicating data. You must stop the channel first to prevent data inconsistency. Then you can edit and change the configuration parameters. After the changes are applied, you restart the channel to resume replication. This protects data integrity during the transition period.
A MySQL DB system has an endpoint in an OCI VCN subnet. The VCN is not configured with VCN peering, VPN access, and FastConnect. You want to connect to the MySQL DB system directly from an OCI Cloud Shell session.
Which two are true? (Choose two.)
Correct Answer:
A, B
Explanation
MySQL HeatWave requires data to be exported in a standard format before import into a new DB system. The MySQL Shell dump utility creates a compatible export file that can be stored in Object Storage. This export format preserves the table structure and data needed for the import process. Other methods like direct transfers or raw file copying do not provide the proper formatting that the HeatWave import mechanism expects.
You run this command to connect successfully to a DB system:
mysqlsh [email protected] --auth-method=authentication_oci_client
Why does the command NOT require a password?
Correct Answer:
C
Explanation
High availability requires two specific preconditions. First, the DB system must be running and active because you cannot enable HA on a stopped system. Second, automatic backups must be enabled because HA relies on backup capability for failover recovery and data protection. Without these two conditions in place, the HA feature cannot be activated or function correctly.
The following statements execute successfully:
CALL sys.ML_TRAIN('ml_data.iris', 'class', NULL, @model);
SELECT @model;
Which three are true? (Choose three.)
Correct Answer:
B, C, E
Explanation
When restoring a backup to a new DB system, certain changes are permitted while others would break the restoration. You can use a different subnet because the backup contains only data and schema, not network configuration. You can also use a different shape or compute specification because the backup is hardware-independent. However, you cannot change the MySQL version or data encryption settings without manual intervention.
You want to train a classification model with MySQL HeatWave AutoML. Which two are requirements of the training data set? (Choose two.)
Correct Answer:
B, E
Explanation
HeatWave stores data using two key mechanisms for performance. Data is partitioned across cluster nodes so that parallel processing can occur simultaneously, dramatically improving query speed through distributed execution. The data is also stored in hybrid columnar format instead of row format, which is optimized for analytic operations that scan many rows but few columns. This combination delivers significant speedup for analytical workloads compared to traditional row storage.
Question 6
You have obtained a new tenancy on Oracle Cloud Infrastructure. You first create a VCN by using the VCN Wizard, and then create a MySQL DB system. You want to create a Connection in Database tools to use the SQL Worksheet feature.
Which three steps are required? (Choose three.)
Correct Answer:
B, C, D
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Domain 1: MySQL HeatWave Service
Learn to identify key features and benefits of MySQL HeatWave, describe its architecture, define terminology, and recognize limitations. This foundational knowledge applies to database administrators, cloud architects, and DevOps engineers managing HeatWave deployments.
Domain 2: Provisioning and Connecting DB systems
Master the identification of VCN requirements for provisioning DB systems and the various connection methods including OCI Bastion, MySQL Shell, OCI Cloud Shell, and OCI SQL Worksheet. Understand how to authenticate DB systems with OCI Identity Access Management credentials.
Domain 3: Managing DB systems
Develop command of DRG and DRG Attachments, apply BGP in the OCI environment, evaluate OCI VPN Services, and validate FastConnect products. These network and infrastructure skills are essential for cloud infrastructure specialists and network administrators.
Domain 4: Backing up and restoring DB systems
Learn to back up and restore DB systems, manage automatic backups, and perform point-in-time recovery. Disaster recovery specialists need these practical skills to ensure data protection and business continuity.
Sample question from this domain above:
Q4
Domain 5: MySQL HeatWave Configurations
Create custom configurations and compare them to understand the effects of changing dynamic and non-dynamic variables. Update DB system configurations to optimize performance for different workload requirements.
Sample question from this domain above:
Q1
Domain 6: Read Replicas
Create and manage read replicas, understand the read replica load balancer, and connect to read replicas effectively. Database architects and replication specialists need these skills for scaling read-heavy workloads.
Domain 7: Data Migrations
Create DB systems with data import, import data into DB systems, and export data from MySQL servers and DB systems. Data migration specialists execute these practical tasks to move workloads into the HeatWave platform.
Sample question from this domain above:
Q2
Domain 8: High Availability
Enable and disable high availability in DB systems, explain placement considerations, and distinguish between switchover and failover operations. System reliability engineers architect resilient deployments that maintain service continuity.
Sample question from this domain above:
Q3
Domain 9: HeatWave Cluster
Describe HeatWave cluster architecture, add HeatWave clusters to DB systems, and determine whether queries are offloaded to the cluster for execution. Database performance specialists optimize in-memory analytics workloads using cluster capabilities.
Sample question from this domain above:
Q5
FAQ
1Z0-915-1 Exam FAQ
Common questions about the exam itself
What background do I need to sit the 1Z0-915-1 MySQL HeatWave exam?
Oracle does not publish formal prerequisites for this exam. However, you should have practical experience with MySQL database administration, familiarity with Oracle Cloud Infrastructure (OCI) concepts, and understanding of database architecture and networking. Most candidates benefit from hands-on experience provisioning and managing database systems in the cloud.
How long does preparation for 1Z0-915-1 typically take?
Preparation time varies based on your existing knowledge. If you already work with MySQL and OCI regularly, six to eight weeks of focused study is reasonable. For those new to HeatWave or OCI, three to four months allows time to gain hands-on experience with the platform while studying the exam topics.
Which objective area in 1Z0-915-1 is considered most difficult?
Most candidates find the HeatWave Cluster section challenging because it requires understanding both the technical architecture and practical query optimization decisions. The MySQL HeatWave Configurations domain is also demanding because it involves understanding how dynamic variables affect performance in real deployments.
What is the format and structure of the 1Z0-915-1 exam?
The exam uses multiple choice questions presented in a mixed format including single-answer and scenario-based questions. You will encounter both knowledge-based questions about concepts and terminology, and practical scenario-driven questions that test decision-making in real-world HeatWave implementations.
How is the 1Z0-915-1 exam delivered and what should I expect on exam day?
You can sit the exam online proctored or at a Pearson VUE test centre. On exam day, bring a government-issued ID and arrive early to allow time for check-in. The proctor will verify your identity and review the testing agreement before the exam begins. You will work through the questions in a secure browser with no access to external resources.
What is the passing score for 1Z0-915-1 and how is it calculated?
Oracle publishes the passing score as a percentage or points out of a total. The exact score needed depends on the question weighting. You will receive your result immediately after finishing, and the testing centre will provide a detailed score report showing your performance in each objective domain.
Can I retake the 1Z0-915-1 exam if I do not pass?
Yes, you can retake the exam. Oracle typically enforces a waiting period between attempts, usually 14 days. Each retake requires a new exam fee. Many candidates use the feedback from their first attempt to identify weak areas and focus their study on those domains.
How long does the 1Z0-915-1 certification stay valid?
Oracle certifications are typically valid for three years from the date you pass the exam. After that period, you may need to recertify by passing an updated exam or completing continuing education requirements. Check Oracle's certification maintenance policy for the specific requirements.
What job roles is the 1Z0-915-1 certification designed for?
This certification targets database administrators managing HeatWave deployments, cloud architects designing analytics solutions, DevOps engineers building infrastructure, and data engineers optimizing query performance. It is valuable for anyone building, deploying, or managing MySQL HeatWave systems in production environments.
How does 1Z0-915-1 relate to other MySQL or Oracle Database certifications?
The 1Z0-915-1 focuses specifically on MySQL HeatWave implementation on OCI. It complements broader database certifications like the Oracle Database SQL Certified Associate (1Z0-071). Candidates often pursue this exam after gaining foundational SQL knowledge, then move toward OCI infrastructure certifications to deepen their cloud skills.
