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| Topic |
Details |
| Topic 1 |
- Describe the architecture of the HeatWave cluster, adding a HeatWave cluster to a DB system, and determine whether a query is offloaded to HeatWave cluster for execution.
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| Topic 2 |
- MySQL HeatWave Configurations: For database administrators and performance tuning specialists, this part of the exam covers creating custom configurations, comparing configurations, describing the effects of changing dynamic and non-dynamic variables, and updating a DB system configuration.
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| Topic 3 |
- 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.
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| Topic 4 |
- 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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| Topic 5 |
- 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.
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| Topic 6 |
- Provisioning and Connecting DB systems: For system administrators and database engineers, this part of the exam covers identifying VCN requirements for provisioning DB systems, connecting to DB systems with OCI Bastion, connecting to DB systems with MySQL Shell, connecting to DB systems with OCI Cloud Shell, connect to DB system with OCI SQL Worksheet, and authenticate DB system with OCI Identify Access Management credentials.
|
| Topic 7 |
- HeatWave Cluster: For database performance specialists and cloud architects, this section of the exam covers
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Oracle MySQL HeatWave Implementation Associate Rel 1 Sample Questions (Q12-Q17):
NEW QUESTION # 12
Why would you select "Source cannot use GTID auto-positioning" when creating a channel?
- A. Some tables have no primary key
- B. The binary log offset is unknown.
- C. The target DB system is a high-availability DB system.
- D. The source gtid mode is OFF.
Answer: D
Explanation:
When creating a replication channel and selecting "Source cannot use GTID auto-positioning", it typically indicates that the source's GTID mode is off. GTID (Global Transaction Identifier) auto-positioning allows for automated recovery and positioning of transactions in replication, but it requires that GTID mode be enabled on the source database.
NEW QUESTION # 13
Which type of configuration variables CANNOT be modified in MySQL custom configurations?
- A. System variables
- B. User variables
- C. Default user variables
- D. Initialization variables
Answer: D
Explanation:
Initialization variables(Answer A) cannot be modified in MySQL custom configurations. These variables are set at the start of the MySQL service and are not changeable without restarting the service.
* Initialization variables are parameters that define how the MySQL server initializes.
* Changes to these variables require restarting the MySQL server to take effect.
* Examples include variables likeinnodb_buffer_pool_size, which determine memory allocation settings on startup.
References:
* MySQL Configuration Variables Documentation
NEW QUESTION # 14
You have successfully enabled high availability of a stand-alone DB system. Which is true?
- A. The DB system has three instances running in different availability or fault domains.
- B. The DB system performs load balancing by distributing client connections to all instances.
- C. The DB system provides new port numbers on the same endpoint to connect to the secondary instances for read-only connections.
- D. The DB system provides new endpoints to connect to the secondary instances for read-only connections.
Answer: A
Explanation:
When high availability is enabled for a stand-alone DB system,the DB system has three instances running in different availability or fault domains(Answer D).
* High Availability Configuration: This setup involves creating multiple instances of the DB system across different availability or fault domains to ensure redundancy and minimize the risk of downtime due to hardware or network failures.
* Instances: Typically, there are three instances-one primary and two replicas-ensuring that the system can failover seamlessly if one instance goes down.
References:
* OCI MySQL High Availability
NEW QUESTION # 15
You want to connect to a DB system with MySQL Shell.
DB system endpoint IP address: 10.0.1.221
Username: admin
Password: MySQL8.0
Which two commands work? (Choose two.)
- A. mysqlsh mysql://admin:MySQL8.0@10.0.1.221
- B. mysqlsh -h10.0.1.221 -uadmin -pMySQL8.0
- C. mysqlsh mysql://MySQL8.0:admin@10.0.1.221
- D. mysqlsh -h 10.0.1.221 -u admin -p MySQL8.0
- E. mysqlsh -host 10.0.1.221 -user admin -password MySQL8.0
Answer: A,B
Explanation:
To connect to a MySQL DB system using MySQL Shell, you can use several command-line formats. Here, we will analyze the provided options:
A:mysqlsh -h 10.0.1.221 -u admin -p MySQL8.0
* Incorrect format. The password should not be directly placed after the-pflag without a space or equals sign.
B:mysqlsh mysql://MySQL8.0:admin@10.0.1.221
* Incorrect format. The username should come before the password in the URL.
C:mysqlsh mysql://admin:MySQL8.0@10.0.1.221
* Correct format. This is a valid way to connect using a URL-like format whereadminis the username,MySQL8.0is the password, and10.0.1.221is the host.
D:mysqlsh -h10.0.1.221 -uadmin -pMySQL8.0
* Correct format. This is a valid way to connect using flags, with no spaces between the flags and their values.
E:mysqlsh -host 10.0.1.221 -user admin -password MySQL8.0
* Incorrect format. MySQL Shell uses-h,-u, and-pfor specifying host, username, and password respectively.
NEW QUESTION # 16
You want to enable high availability of a stand-alone DB system. Which two conditions are required? (Choose two.)
- A. The DB system delete protection must be enabled.
- B. The DB system point-in-time recovery must be enabled.
- C. The DB system automatic backup must be enabled.
- D. The DB system crash recovery must be enabled.
- E. The DB system must be active.
Answer: C,E
Explanation:
To enable high availability for a stand-alone DB system, the following conditions are required:
* The DB system must be active(Answer D): The DB system needs to be in an active state to enable high availability features.
* The DB system automatic backup must be enabled(Answer E): Automatic backups must be enabled to ensure data protection and facilitate failover operations.
Steps:
* Ensure the DB system is running and operational.
* Enable automatic backups through the OCI Console or API.
References:
* MySQL High Availability Documentation
* Automatic Backups Documentation
NEW QUESTION # 17
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