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Oracle 1z0-915-1 Exam Syllabus Topics:

Topic	Details
Topic 1	Inbound Replication: For database administrators and replication experts, this section of the exam covers setting up and troubleshoot inbound replication and creating channels.
Topic 2	Data Migrations: For data migration specialists and database administrators, this part of the exam covers creating a DB system with data import, importing data into a DB system, and exporting data from MySQL servers and DB systems.
Topic 3	Read Replicas: For database architects and replication specialists, this domain of the exam covers creating and managing read replicas, describing the read replica load balancer, connecting to a read replica, etc.
Topic 4	MySQL HeatWave Service: For database administrators, cloud architects, and DevOps engineers, this section of the exam covers identifying key features and benefits, describing MySQL HeatWave architecture, defining MySQL HeatWave terminology, and identifying MySQL HeatWave limitations.
Topic 5	Backing up and restoring DB systems: For database administrators and disaster recovery specialists, this section of the exam covers backing up and restoring a DB system, managing automatic backups, and performing point-in-time recovery.
Topic 6	High Availability: For system reliability engineers and database architects, this domain of the exam covers how to enable and disable the high availability of a DB system, explain placement considerations for a high availability DB system, distinguish between switchover and failover, etc.

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Oracle MySQL HeatWave Implementation Associate Rel 1 Sample Questions (Q62-Q67):

NEW QUESTION # 62
A query is not offloaded to the HeatWave cluster for execution. Which three are possible reasons? (Choose three.)

A. The use_secondary_engine session variable is OFF.
B. The query estimated cost is less than the query cost threshold.
C. A required column is excluded from the RAPID secondary engine.
D. The user does not have privileges to access the HeatWave cluster.
E. The client is connected to the DB system instead of the HeatWave cluster.

Answer: A,C,E

Explanation:
A query may not be offloaded to the HeatWave cluster for execution due to the following reasons:
A:Theuse_secondary_enginesession variable is OFF: This setting controls whether queries should be offloaded to the secondary engine (HeatWave). B.The client is connected to the DB system instead of the HeatWave cluster: For queries to be offloaded, the client must be connected to the HeatWave cluster. E.A required column is excluded from the RAPID secondary engine: If a necessary column is not available in the HeatWave (RAPID) secondary engine, the query cannot be offloaded.

NEW QUESTION # 63
You want to migrate an on-premises MySQL database to a MySQL DB system on OCI.
Which method provides the least amount of application down time when switching to the DB system?

A. Use inbound replication to synchronize the MySQL database transactions to the DB system.
B. Store the exported data in object storage to speed up the export and import.
C. Run MySQL Shell on an OCI compute instance to export and import the data for faster migration.
D. Use the largest DB system shape to speed up the import.

Answer: A

Explanation:
To migrate an on-premises MySQL database to a MySQL DB system on OCI with the least amount of application downtime,use inbound replication to synchronize the MySQL database transactions to the DB system(Answer C).
* Inbound Replication: This method involves setting up replication from your on-premises MySQL database to the MySQL DB system in OCI. This ensures that all changes and transactions are continuously replicated, keeping the DB system up to date with minimal downtime.
* Steps to Implement:
* Set up the MySQL DB system in OCI.
* Configure the on-premises MySQL database as the master and the OCI DB system as the slave.
* Start the replication process to keep the DB system synchronized with the on-premises database.
* When ready, switch the application to the DB system with minimal downtime as the data is already synchronized.
References:
* MySQL Replication Documentation
* OCI MySQL Database Service Replication

NEW QUESTION # 64
Which sequence of steps must you perform to change the configuration of a high-availability DB system?

A. Edit and change the configuration of all secondary instances, switch over to a secondary instance, andedit and change the configuration of the former primary instance.
B. Disable high availability, edit the DB system, change the configuration, and enable high availability.
C. Edit the DB system and change the configuration.
D. Stop the DB system, edit the DB system, change the configuration, and start the DB system.

Answer: D

Explanation:
To change the configuration of a high-availability DB system, you must follow these steps:
* Stop the DB system: This ensures that the system is in a consistent state and that no transactions are being processed during the configuration change.
* Edit the DB system: Make the necessary changes to the configuration.
* Change the configuration: Apply the configuration changes.
* Start the DB system: Restart the system to apply the new configuration settings.

NEW QUESTION # 65
What must you do to minimize a DB system down time caused by automatic maintenance operations?

A. Add HeatWave cluster.
B. Enable high availability.
C. Create read replicas.
D. Enable crash recovery.

Answer: B

Explanation:
To minimize DB system downtime caused by automatic maintenance operations, you should enable high availability. High availability ensures that there are multiple instances of your database running in different fault domains or availability domains, reducing the impact of maintenance on the system's availability.

NEW QUESTION # 66
Which two methods can be used to stop a DB system? (Choose two.)

A. Run the SHUTDOWN SQL statement from any connected client logged in as the admin user.
B. Use the STOP action on the DB system details page in the OCI Console.
C. Execute the mysql db-system stop command from OCI CLI.
D. Run the shutdown command from a mysqladmin client logged in as the admin user.

Answer: B,C

Explanation:
You can stop a MySQL DB system using the following methods:
A:Use the STOP action on the DB system details page in the OCI Console: This is a straightforward way to stop the DB system via the Oracle Cloud Infrastructure web interface. D.Execute themysql db-system stop command from OCI CLI: This command uses the Oracle Cloud Infrastructure Command Line Interface to stop the DB system programmatically.

NEW QUESTION # 67
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Exam 1z0-915-1 Pass4sure | 1z0-915-1 Test Fee

Oracle 1z0-915-1 Exam Syllabus Topics:

1z0-915-1 Study Materials: Oracle MySQL HeatWave Implementation Associate Rel 1 - 1z0-915-1 Actual Questions & 1z0-915-1 Quiz Guide

Oracle MySQL HeatWave Implementation Associate Rel 1 Sample Questions (Q62-Q67):

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