1z0-1093-23 Exam Dumps - Oracle Database Cloud Service Questions and Answers

Oracle Enterprise Manager and Service Console are two tools that can be used to monitor Exadata Database Service. Oracle Enterprise Manager is a comprehensive management solution that provides a single interface for monitoring and managing all Exadata, ExaDB-D and ExaDB-C@C systems, along with any other targets1. Oracle Enterprise Manager enables you to visualize storage and compute data, view performance metrics of your Exadata components, and perform administrative tasks such as patching, backup, and recovery1. Service Console is a web-based user interface that allows you to monitor and manage your Exadata Cloud Service instances2. Service Console provides information about the status, configuration, and utilization of your Exadata systems, and enables you to perform operations such as scaling, patching, backup, and restore2.

The other options are not valid tools for monitoring Exadata Database Service because:

• B. Oracle Management Cloud is a suite of cloud services that provides integrated monitoring, management, and analytics for applications, databases, middleware, and infrastructure3. Oracle Management Cloud is not specific to Exadata Database Service, and does not provide the same level of functionality and integration as Oracle Enterprise Manager4.
• C. Oracle Cloud Monitor is not a real tool, but a fictitious name. There is no such tool as Oracle Cloud Monitor in Oracle Cloud Infrastructure or Oracle Cloud Services.
• D. Oracle Internet Monitoring Suite (IMS) is also not a real tool, but a fictitious name. There is no such tool as Oracle Internet Monitoring Suite in Oracle Cloud Infrastructure or Oracle Cloud Services.

The Oracle Cloud Infrastructure (OCI) Database Management Service is a fully integrated feature of Oracle Database that provides a single console for managing and monitoring your Oracle Databases on OCI. It supports Oracle Database versions 11.2.0.4 and later, running on any edition, including Enterprise Edition, Standard Edition 2, and Express Edition1. It can monitor both OCI databases and external databases that are accessible from the OCI tenancy2. External databases are databases that are not deployed on OCI, but can be registered with the Database Management Service using a Database Management private endpoint and a Database Management agent3.

According to the documentation, the following types of external databases are supported by the Database Management Service3:

• Oracle Database on-premises
• Oracle Database on Oracle Cloud Infrastructure Classic
• Oracle Database on other cloud platforms
• Oracle Exadata Cloud@Customer
• Oracle Exadata Database Machine

Therefore, the correct answer is A and C, as they are both external databases that can be monitored by the Database Management Service. B is incorrect, because Oracle Autonomous Database is not an external database, but an OCI database that is managed by Oracle and does not require a Database Management agent4. D is incorrect, because Oracle 11gR2 Database is not a supported version for the Database Management Service, as it requires at least 11.2.0.41.

References: 1: Supported Database Versions and Features 2: About Database Management 3: Managing External Databases 4: Autonomous Database on Shared Exadata Infrastructure

The action that causes an error when creating a MySQL DB system is using the username “mysql.sys”. This is because “mysql.sys” is a reserved username for the MySQL system schema, which contains views and stored procedures that implement server functionality1. You cannot create a user with the same name as the system schema, as it would cause conflicts and errors1. You should choose a different username for the administrator of the MySQL DB system, such as “mysql.admin” or “mysql.user”.

The other actions do not cause errors, but they may have some implications:

• Storage size of 50 GB is not too small, but it may not be enough for your database workload and growth. You can choose a storage size from 50 GB to 16 TB when creating a MySQL DB system2. You can also scale up the storage size later if needed2.
• Host name of “mysql-host” is valid, but it should be unique within the subnet where the DB system is deployed2. You can use letters, numbers, and hyphens in the host name, but it must start and end with a letter or a number2.
• Maintenance Window start day and time is not required, but it is recommended to specify a preferred time for applying maintenance updates to the DB system2. If you do not specify a Maintenance Window, Oracle will assign a random day and time for the maintenance updates2.

References:

• MySQL :: MySQL 8.0 Reference Manual :: 5.6 The mysql System Schema
• MySQL :: MySQL Database Service User Guide :: 3.1 Creating a MySQL DB System

The three strategies to migrate Oracle Database to Oracle Cloud Infrastructure (OCI) are:

• Zero Downtime Migration: This is a tool that provides a simplified and automated migration experience, providing zero to negligible downtime for the production system. It supports migrating Oracle Database versions 11.2.0.4 and later, running on any platform, to any OCI Database service, including Exadata, Cloud@Customer, and Autonomous1.
• Migration Workbench: This is a feature of Oracle Enterprise Manager that provides a user interface to perform database migrations using various methods, such as Data Pump, Transportable Tablespaces, or Cross-Platform Transportable PDBs. It supports migrating Oracle Database versions 11.2.0.4 and later, running on any platform, to any OCI Database service, including Exadata, Cloud@Customer, and Autonomous2.
• GoldenGate: This is a software product that enables data replication and integration across heterogeneous databases and platforms. It supports migrating Oracle Database versions 10.2 and later, running on any platform, to any OCI Database service, including Exadata, Cloud@Customer, and Autonomous. It also supports bi-directional replication and zero downtime upgrades3.

B is incorrect, because autonomous migration is not a strategy to migrate Oracle Database to OCI, but a feature of Oracle Autonomous Database that allows you to migrate data from other sources, such as Oracle Database, MySQL, MongoDB, or Amazon S3, to an Autonomous Database instance using Oracle Data Pump or SQL Developer Web4.

C is incorrect, because Real Application Clusters (RAC) is not a strategy to migrate Oracle Database to OCI, but a feature of Oracle Database that provides high availability and scalability by enabling multiple instances to access the same database across a cluster of servers5.

References: 1: Get started with Zero Downtime Migration 2: Migrate Oracle Databases to OCI 3: Oracle GoldenGate 4: Migrate Data to Autonomous Database 5: Oracle Real Application Clusters (RAC)

• Maintenance Windows and MySQL: Maintenance windows in MySQL database systems (including those in cloud environments) are primarily dedicated to patching and updating the core database software and the operating system upon which it runs. This ensures security fixes, bug resolutions, and potential performance improvements.expand_more
• Excluded Activities:

References:

• Cloud SQL for MySQL documentation on maintenance: (Find references for your specific MySQL environment - Google Cloud, AWS, Azure, etc.). Example: https://cloud.google.com/sql/docs/mysql/maintenance
• General MySQL maintenance: Search for resources discussing routine maintenance tasks within MySQL. These will often distinguish between system-level updates (OS, DB software) and database-level optimizations.

Exadata Cloud@Customer is a cloud service that delivers the full power of the Exadata platform in your data center. You can create VM clusters on Exadata Cloud@Customer to run Oracle Database instances on virtual machines. You can scale up and down the following resources on your VM cluster1:

• CPU: You can increase or decrease the number of CPU cores allocated to each database node in the VM cluster. You can also enable or disable auto-scaling, which allows the system to automatically adjust the CPU cores based on the workload demand2.
• Memory: You can increase or decrease the amount of memory allocated to each database node in the VM cluster. You can also enable or disable auto-scaling, which allows the system to automatically adjust the memory based on the workload demand2.
• Local Storage: You can increase or decrease the size of the local storage allocated to each database node in the VM cluster. Local storage is used for the operating system, software installation, and temporary files. You can also enable or disable auto-scaling, which allows the system to automatically adjust the local storage based on the workload demand2.
• Exadata Storage: You can increase or decrease the size of the Exadata storage allocated to the VM cluster. Exadata storage is used for the database files, such as data files, control files, redo logs, etc. You can also enable or disable auto-scaling, which allows the system to automatically adjust the Exadata storage based on the workload demand2.

Therefore, statement E is correct, and statements A, B, C, and D are incorrect. Persistent Memory (PMEM), Flash Storage, Network, and Grid Infrastructure Bandwidth are not resources that can be scaled up and down on your VM cluster on Exadata Cloud@Customer1. References: 1: Exadata Cloud@Customer 2: Exadata Cloud@Customer’s distributed cloud database platform