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Oracle 1z0-915-1 Exam Syllabus Topics:

Topic
Details

Topic 1

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.

Topic 2

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 3

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 4

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.

Topic 5

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 6

Managing DB systems: For network administrators and cloud infrastructure specialists, this domain of the exam covers demonstrating a command of DRG and DRG Attachments, applying BGP in the OCI environment, evaluating OCI VPN Services, and validating the various FastConnect products from OCI.

Topic 7

HeatWave Cluster: For database performance specialists and cloud architects, this section of the exam covers

Topic 8

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 9

Inbound Replication: For database administrators and replication experts, this section of the exam covers setting up and troubleshoot inbound replication and creating channels.

Topic 10

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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Oracle MySQL HeatWave Implementation Associate Rel 1 Sample Questions (Q51-Q56):

NEW QUESTION # 51
You want to enable high availability of a stand-alone DB system. Which two conditions are required? (Choose two.)

A. The DB system must be active.
B. The DB system point-in-time recovery must be enabled.
C. The DB system delete protection must be enabled.
D. The DB system crash recovery must be enabled.
E. The DB system automatic backup must be enabled.

Answer: A,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 # 52
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?

A. The correct password is saved in the local MySQL Shell secret store.
B. The credential is stored in an OCI vault secret.
C. The operating system user credential is used to authenticate with the DB system.
D. The correct API key-pair is specified in the -/. oci. config file.

Answer: D

Explanation:
The commandmysqlsh [email protected] --auth-method=authentication_oci_clientdoes not require a password because it uses the OCI (Oracle Cloud Infrastructure) client authentication method. This method relies on the correct API key-pair specified in the~/.oci/configfile. This file contains the necessary credentials (user OCID, tenancy OCID, API keys, etc.) to authenticate with the OCI environment without needing a password for each connection.

NEW QUESTION # 53
You want to restore the backup of a stand-alone DB system to a new DB system.
Which two changes are allowed? (Choose two.)

A. Use a different region for the new DB system.
B. Use a different tenancy for the new DB system.
C. Use a different subnet for the new DB system.
D. Use a different shape for the new DB system.
E. Use a smaller data storage size for the new DB system.

Answer: C,D

Explanation:
When restoring the backup of a stand-alone DB system to a new DB system, the following changes are allowed:
* Use a different subnet for the new DB system(Answer B): You can select a different subnet within the same VCN or a different VCN for the new DB system, providing flexibility in network configuration.
* Use a different shape for the new DB system(Answer C): You can choose a different compute shape for the new DB system, allowing you to scale the compute resources according to the requirements.
References:
* OCI MySQL Database Service Backup and Restore Documentation

NEW QUESTION # 54
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.)

A. Create an OCI vault.
B. Create an OCI password.
C. Create an encryption key.
D. Create an OCI secret.
E. Import an X.509 certificate into the OCI vault.

Answer: B,D,E

Explanation:
To create a connection in Database Tools to use the SQL Worksheet feature, the following steps are required:
* Create an OCI password(Answer A): This password is necessary for authentication when connecting to the MySQL DB system.
* Create an OCI secret(Answer D): Secrets are used to store sensitive information like passwords securely. The secret will contain the database credentials.
* Import an X.509 certificate into the OCI vault(Answer E): This certificate is required for secure connections to the database, ensuring encrypted communication.
References:
* OCI Database Tools Documentation
* Using OCI Secrets
* X.509 Certificates Documentation

NEW QUESTION # 55
The first query has an estimated cost of 100,000,000 and is offloaded to a HeatWave cluster for execution:
SELECT flightno, departure, country FROM flight JOIN airport_geo ON 'from'=airport_id; The second query has an estimated cost of 10,000 and is NOT offloaded to the Heatwave cluster for execution:
SELECT DISTINCT country FROM airport_geo ORDER BY country;
Which two methods can offload the second query to the Heatwave cluster for execution? (Choose two.)

A. CALL sys.heatwave_advisor(JSON_OBJECT("auto_enc", JSON_OBJECT("mode", "recommend")));
B. SET secondary_engine_cost_threshold=1000;
C. SET optimizer_trace="enabled=on";
D. SET use_secondary_engine=FORCED;
E. CALL sys.heatwave_load('["airport_geo"]');

Answer: B,D

Explanation:
To offload the second query to the HeatWave cluster for execution, you can use the following methods:
* SET use_secondary_engine=FORCED(Answer A): This forces the use of the HeatWave secondary engine for query execution, regardless of the estimated cost.
* SET secondary_engine_cost_threshold=1000(Answer B): This lowers the cost threshold for queries to be offloaded to the HeatWave cluster, allowing queries with lower estimated costs to be offloaded.
Steps:
* Before running the second query, executeSET use_secondary_engine=FORCED;to force the offloading of queries to HeatWave.
* Alternatively, executeSET secondary_engine_cost_threshold=1000;to adjust the cost threshold, making the second query eligible for offloading.

NEW QUESTION # 56
......

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