Which two statements are true regarding MySQL Database Service HeatWave? (Choose two.)
HeatWave uses machine learning to automate operations, increase DBA productivity, and reduce costs.
HeatWave uses periodic long-running ETL batch jobs to refresh data
HeatWave is an in-memory, query-processing engine designed for fast execution of analytic queries.
The HeatWave data that is needed for analytic processing is stored in disk files.
Regarding MySQL Database Service HeatWave, the following two statements are true:
B is incorrect, because HeatWave does not use periodic long-running ETL batch jobs to refresh data, but a novel technique called dual-format storage. HeatWave stores data in both row and column formats, and synchronizes the data between the two formats in real time. This eliminates the need for ETL processes and enables fast execution of both transactional and analytic queries on the same data.
D is incorrect, because the HeatWave data that is needed for analytic processing is not stored in disk files, but in memory. HeatWave uses sparse files to store the columnar data in memory, which are compressed and encrypted. HeatWave also supports querying data in object storage, such as Oracle Cloud Infrastructure Object Storage or Amazon S3, using the HeatWave Lakehouse feature.
References: 1: MySQL HeatWave Database Service | Oracle 2: HeatWave | Oracle 3: MySQL HeatWave User Guide :: 10 Machine Learning in MySQL HeatWave 4: MySQL HeatWave User Guide :: 9 HeatWave Autopilot 5: MySQL HeatWave User Guide :: 8 HeatWave Advisor : MySQL HeatWave User Guide :: 1 Overview : MySQL HeatWave User Guide :: 2 HeatWave Architecture : MySQL HeatWave User Guide :: 3 HeatWave Data
Your MySQL Database Service system is automatically backed up between midnight and 1 AM.
What must you do to change the starting time to 4 AM?
Select Backup Window from the Edit MySQL DB System Details page and set the start time to 4 AM.
Use the mysqlbackup command to establish a 4 AM backup start time.
Update the Oracle Cloud Infrastructure (QCI) MySQL DB System Details page to specify the 4 AM backup window start time.
Edit the OCI MySQL DB System Details to set the Enable Automatic Backups time to 4 AM.
To change the backup window start time for a MySQL Database Service system, you need to select Backup Window from the Edit MySQL DB System Details page and set the start time to 4 AM. This option allows you to specify the time range during which automatic backups are performed. You can also enable or disable automatic backups from this page. The other options are incorrect because they do not apply to MySQL Database Service systems. The mysqlbackup command is a tool for backing up and restoring MySQL databases, but it is not used to configure the backup window for MySQL Database Service systems. The OCI MySQL DB System Details page does not have an option to specify the backup window start time or to enable automatic backups. The Enable Automatic Backups time is not a valid setting for MySQL Database Service systems. References:
Which two must you create or configure to manage an external database? (Choose two.)
A dynamic group
A database handle
A database group
A database connection
To manage an external database using the Oracle Cloud Infrastructure Database Management Service, you must create or configure a database handle and a database connection1. A database handle is a resource that represents an external database in Oracle Cloud Infrastructure2. It contains information such as the database name, version, edition, and deployment type. A database connection is a resource that enables you to connect a database handle to an Oracle Database instance located outside of Oracle Cloud Infrastructure3. It contains information such as the host name, port number, service name, and credentials. You can create and manage database handles and connections using the Oracle Cloud Infrastructure Console or the REST API23.
A is incorrect, because a dynamic group is not required to manage an external database. A dynamic group is a group of Oracle Cloud Infrastructure resources that are dynamically matched according to rules that you define4. You can use a dynamic group to grant permissions to the Database Management agent, which is a software component that runs on the host where the external database is located and communicates with the Database Management service5. However, creating a dynamic group is not mandatory, as you can also use other methods to grant permissions to the agent, such as using a user API key or an instance principal5.
C is incorrect, because a database group is not required to manage an external database. A database group is a logical grouping of databases that you can use to perform actions on multiple databases at once. You can create a database group for external databases, but it is not a prerequisite for managing them.
References: 1: About Database Management 2: Manage the Handles for External Database 3: Manage the Connections for External Database 4: Managing Dynamic Groups 5: About Database Management Agent : Managing Database Groups
Which statement is true about rebooting a virtual machine (VM) DB system node using the Oracle Cloud Infrastructure Console?
The VM DB system nodes cannot be rebooted individually For multinode DB systems, you have to act on all the VM nodes concurrently.
The VM DB system can be rebooted only from Oracle Cloud Infrastructure REST APIs or dbcli
Under Database, click Bare Metal, VM, and Exadata; select the DB system you want to reboot; and then click Stop and Start after a few minutes under the Actions (three dots) menu.
On the VM DB system details page, find the node that you want to reboot, click the Actions (three dots) menu for that node, and then click Reboot.
The statement that is true about rebooting a virtual machine (VM) DB system node using the Oracle Cloud Infrastructure Console is D. On the VM DB system details page, find the node that you want to reboot, click the Actions (three dots) menu for that node, and then click Reboot. This is the procedure that is described in the official documentation12. It allows you to reboot a single node of a multi-node DB system individually, which may be necessary in some cases, such as scheduled maintenance1. The node is shut down and then restarted, and the floating IP address may take some time to be updated1.
A is incorrect, because the VM DB system nodes can be rebooted individually, as explained above. B is incorrect, because the VM DB system can be rebooted from the Oracle Cloud Infrastructure Console, as well as from the REST APIs or dbcli1. C is incorrect, because this is not the correct way to reboot a VM DB system node. Stopping and starting the DB system affects all the nodes, not just one, and it also stops and starts the database instances. This is different from rebooting a node, which does not affect the database instances1.
References: 1: Reboot a DB System 2: Reboot a DB System : Stop and Start a DB System
You have a group called Database Admins and you need to allow them to create Exadata Database Services.
Which is the correct IAM policy to use?
Allow tenancy DatabaseAdmins to manage database-family in group
Allow databases in tenancy to be managed by DatabaseAdmins
Allow group DatabaseAdmins to manage database-family in tenancy
Allow group DatabaseAdmins to create database-family in tenancy
Allow group DatabaseAdmins to manage databases in tenancy
The correct IAM policy to use to allow a group called DatabaseAdmins to create Exadata Database Services is to allow the group to manage the database-family resource type in the tenancy. The database-family resource type includes all the resources related to Oracle Database services, such as DB systems, databases, backups, patches, and Exadata infrastructure1. The syntax for the policy statement is as follows2:
Allow group DatabaseAdmins to manage database-family in tenancy
This policy statement grants the DatabaseAdmins group the permission to perform any action on any resource in the database-family resource type within the tenancy. This includes creating, updating, deleting, and viewing Exadata Database Services and other database resources12.
The other options are not correct IAM policies to use for this purpose. Option A is not a valid syntax, as the tenancy cannot be used as a target for a policy statement. Option B is not a valid syntax, as the databases cannot be used as a principal for a policy statement. Option D is not sufficient, as it only grants the permission to create database-family resources, but not to manage them. Option E is not comprehensive, as it only grants the permission to manage databases, but not other database-family resources, such as Exadata infrastructure12. References:
In which case can you fast provision a virtual machine (VM) database (DB) systems, using Logical Volume Manager (LVM) for storage management?
Oracle Database versions 18c and greater
Oracle Database versions 12.2 and greater
Oracle Databases that could use Automatic Storage Management
any currently supported release of the Oracle Database
You can fast provision a virtual machine (VM) database (DB) system, using Logical Volume Manager (LVM) for storage management, only for Oracle Database versions 12.2 and greater1. This is because LVM is a new feature introduced in Oracle Base Database Service to enable faster provisioning of single-node VM DB systems1. LVM allows you to create logical volumes from physical disks and manage them more easily and efficiently1. LVM also reduces the storage overhead and improves the performance of the VM DB system1. LVM is not available for Oracle Database versions lower than 12.2, or for multi-node VM DB systems, or for bare metal DB systems1. For these cases, you must use Automatic Storage Management (ASM) for storage management, which is the default and recommended option for Oracle Base Database Service1. ASM provides high availability, scalability, and performance for Oracle databases by managing the disk groups and data files1. Therefore, the correct answer is B. References:
What permissions do you need to perform actions on a NoSQL table?
NOSQL_ROWS_READ, NOSQL_ROWS_DELETE
NOSQL_TABLE_INSPECT, NOSQL_TABLE_UPDATE
NOSQL_TABLE_DESTROY, NOSQL_TABLE_ALTER
NOSQL_TABLE_WRITE, NOSQL_ROWS_INSERT
To perform actions on a NoSQL table, such as creating, updating, deleting, or querying rows, you need to have the appropriate permissions granted by an IAM policy. The permissions are defined by the combination of the verb and the resource type. For example, the NOSQL_TABLE_WRITE permission allows you to create or update a table, and the NOSQL_ROWS_INSERT permission allows you to insert rows into a table1.
The other options are not correct permissions to perform actions on a NoSQL table. The NOSQL_ROWS_READ and NOSQL_ROWS_DELETE permissions only allow you to read or delete rows from a table, but not to insert or update them1. The NOSQL_TABLE_INSPECT and NOSQL_TABLE_UPDATE permissions only allow you to list or modify the properties of a table, but not to create or delete it1. The NOSQL_TABLE_DESTROY and NOSQL_TABLE_ALTER permissions only allow you to drop or alter a table, but not to create or update it1. References:
The /u02 directory containing Oracle Homes (OH) is 80% utilized and you need to free up space in it. You own two Oracle Homes OH193_A and OH193_B with test databases 193A and 193B, respectively. You decide to consolidate both databases into a single Oracle Home (OH193_A) to free up space.
Which two actions must you perform? (Choose two.)
Schedule a downtime window with the team using the 193B database.
Copy the sqlnet.ora and spfile from OH193_B to OH193_A and restart PDBs.
Create a new container database under OH193B and migrate the Pluggable Databases (PDBs) from 193B to 193A.
Use the Move Database option from the console to relocate the database to the target Oracle Home.
To consolidate two databases into a single Oracle Home, you need to perform the following actions1:
Therefore, statements A and D are correct, and statements B and C are incorrect. Copying the sqlnet.ora and spfile from OH193_B to OH193_A and restarting PDBs is not sufficient to move the database to a different Oracle Home, as it does not update the Oracle Inventory, the Oracle Restart configuration, or the database registry4. Creating a new container database under OH193B and migrating the PDBs from 193B to 193A is not necessary, as you can move the existing PDBs directly to the target Oracle Home without creating a new container database5. References: 1: Oracle Base Database Services 2023 Professional, Section 4.2.2: Moving a Database to a Different Oracle Home 2: Base Database Service, Section 4.2.2.1: Prerequisites for Moving a Database to a Different Oracle Home 3: Base Database Service, Section 4.2.2.2: Moving a Database to a Different Oracle Home 4: [Oracle Database Administrator’s Guide], Section 2.4.1: Moving Oracle Database to a New Oracle Home 5: [Oracle Database Administrator’s Guide], Section 19.1.1: Overview of Pluggable Database Migration
Which two use cases can be used by the Oracle database with Object Storage in Oracle Cloud Infrastructure (OCI)? (Choose two.)
Database data files
Database backups
Database log files
Database binaries
Oracle database with Object Storage in Oracle Cloud Infrastructure (OCI) can be used for the following use cases:
The other two options are not valid use cases for Oracle database with Object Storage in OCI:
References: 1: Backing Up to Object Storage 2: Archiving Redo Log Files to Object Storage 3: Object Storage Overview
Which two tools are used to monitor Exadata Database Service? (Choose two.)
Oracle Enterprise Manager
Oracle Management Cloud
Oracle Cloud Monitor
Oracle Internet Monitoring Suite (IMS)
Service Console
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:
Which three are prerequisites for using the MySQL Database Service? (Choose three.)
You must create a compartment to store your resources.
You must create a tenancy and be able to sign in to it.
You or your group must be granted the policies described in Mandatory Policies.
You must download the latest MySQL version from https://edelivery.oracle.com/.
You must install the downloaded MySQL version onto Oracle Cloud Infrastructure.
To use the MySQL Database Service, you need to have the following three prerequisites1:
D is incorrect, because you do not have to download the latest MySQL version from The MySQL Database Service is a fully managed service that provides you with the MySQL version that you select when creating a MySQL DB system. You do not have to download or install any MySQL software on Oracle Cloud Infrastructure.
E is incorrect, because you do not have to install the downloaded MySQL version onto Oracle Cloud Infrastructure. As mentioned above, the MySQL Database Service is a fully managed service that handles the installation and configuration of the MySQL software for you.
References: 1: Getting Started With MySQL Database Service 2: About Your Tenancy 3: About Compartments 4: Managing Compartments 5: About Policies : Mandatory Policies : Creating a MySQL DB System
Which are the three strategies to migrate Oracle Database to Oracle Cloud Infrastructure (OCI)? (Choose three.)
Zero Downtime Migration
Autonomous migration
Real Application Clusters
Migration Workbench
GoldenGate
The three strategies to migrate Oracle Database to Oracle Cloud Infrastructure (OCI) are:
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)
Which statement is true about MySQL Database Service?
It is a public cloud service built on MySQL Community Edition.
Its users are responsible for database and operating system patching tasks.
It is a fully managed Oracle Cloud Infrastructure (QCI) native service.
It supports MySQL Enterprise Edition version 5.7 with InnoDB Storage Engine.
The statement that is true about MySQL Database Service is that it is a fully managed Oracle Cloud Infrastructure (OCI) native service1. This means that MySQL Database Service is developed, managed, and supported by the MySQL team in Oracle, and that Oracle automates tasks such as backup and recovery, and database and operating system patching1. You are responsible solely for managing your data, schema designs, and access policies1.
The statements that are false about MySQL Database Service are:
References:
You want to check if cloud tools are up-to-date in Exadata Database Service.
Which two steps should you perform to obtain the current version of cloud tooling on a database server? (Choose two.)
You must first connect to Exadata Cloud Service as the oracle user.
Run the dbaascli patch tools list command.
You must first connect to Exadata Cloud Service as opc and sudo to the root user.
Run the rpm -qa|grep -i dbaastools_exadata command.
To check if cloud tools are up-to-date in Exadata Database Service, you need to perform the following two steps1:
The other option, running the dbaascli patch tools list command, is incorrect because it is not a valid command for Exadata Database Service. The dbaascli utility is a command-line interface that provides various functions for managing the database service, such as patching, backup, recovery, and encryption1. However, the patch tools subcommand is not supported for Exadata Database Service, as the cloud tools are automatically updated by Oracle1. Therefore, the correct answer is C and D. References:
After you have provisioned a virtual machine (VM) database (DB) system, what action can you take to meet changes in block storage requirements?
After you have provisioned a VM DB system, you cannot increase or decrease block storage.
If a VM DB system requires more block storage, you can increase the storage at any time without impacting the system.
If you want to increase or decrease the storage, you must change the shape of the VM DB system.
If a VM DB system has different requirements for block storage, you can increase or decrease the storage at any time without impacting the system.
A VM DB system database uses OCI block storage instead of local storage. You specify a storage size when you create the DB system, and you can scale up the storage as required at any time1. Scaling the storage does not affect the availability or performance of the database2. You can use the Oracle Cloud Infrastructure Console or the API to scale the storage of a VM DB system1.
The other options are incorrect because:
References: 1: Scale the DB System 2: About Virtual Machine DB Systems 3: [Change the Shape of a DB System]
You define a maintenance window for your MySQL DB systems.
When the automatic maintenance process takes place, which two activities does the system perform while its status is set to UPDATING?
It upgrades the associated compute instance to the latest Linux operating system version.
It analyzes, rebuilds, and optimizes MySQL database tables and indexes.
It patches the MySQL server itself along with any underlying hardware.
It patches the underlying operating system of the MySQL database.
References:
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