Free Practice Questions for Oracle 1z0-1093-25 Exam

B. Optimizing schema and indexes:

Efficient schema design reduces the number of read/write operations.

Proper indexing reduces the need to scan large data volumes, minimizing the number of read capacity units (RCUs) consumed.

This proactive approach helps stay within the provisioned rate limits, avoiding throttling.

Why the other options are incorrect:

A. Increasing storage capacity:Does not address the rate of operations, only storage volume.

C. Disabling encryption:Unwise due to security risks and does not significantly impact rate limits.

D. Consolidating data into one table:Likely increases the rate of operations, worsening the problem.

Primary Distinction:

The primary difference betweenBaseDB on a VMandBare Metalis how the underlying hardware is allocated:

BaseDB on VM:The infrastructure issharedamong multiple tenants, using virtualization to isolate instances.

Bare Metal Database Service:The server'sphysical hardware is dedicatedexclusively to a single tenant, offeringmaximum performance and isolation.

This exclusive access to hardware in Bare Metal allows forbetter performanceand control compared to VM-based instances.

Why the other options are incorrect:

A:Binaries are not always pre-installed in both cases; it depends on the configuration.

B:Oracle handles hypervisor configuration, not the user.

D:Both VM and Bare Metal allow multiple database homes if configured properly.

AutoML in MySQL HeatWave:

TheAutoML featurein MySQL HeatWave integratesmachine learning capabilitiesdirectly within the database, allowing users to:

Build, train, and deploy modelswithout moving data to external systems.

Automate the entire ML pipeline, includingdata preprocessing, model selection, and hyperparameter tuning.

This makes it easier for data engineers and analysts to performpredictive analyticswithout requiring data science expertise.

Why the other options are incorrect:

A:AutoML does not focus on server tuning; it focuses on machine learning.

C:Generating SQL queries from natural language is not within AutoML’s scope.

D:AutoML is unrelated to database backup.

E:Visualization is not the primary function; it focuses on model building.

B. Manual patching for GI and ASM:

In auser-managed environment, the DBA is responsible for downloading and applying patches forGrid Infrastructure (GI)andAutomatic Storage Management (ASM).

These patches are distinct fromdatabase patchesand need to be applied using tools likeopatchorOracle Universal Installer (OUI).

The process involves:

Downloading the patch from Oracle Support.

Staging the patch on the server.

Applying the patch using the appropriate commands.

Why the other options are incorrect:

A. Fully automated by OCI:OCI does not automatically patch GI and ASM in user-managed environments.

C. Integrated with database patching:GI and ASM patching is handled separately.

D. Required only during OS upgrade:Incorrect, as patching is required independently for security and stability.

C. Utilizing OCI Database backups:

Integrated withOracle Cloud Infrastructure (OCI), providing consistent and complete backups.

Supports both theMySQL Database System and the HeatWave cluster, ensuring data integrity.

Automates backup scheduling and retention policies.

Facilitates easy restoration in case of data loss or corruption.

Why the other options are incorrect:

A. Manual copying:Prone to errors and lacks consistency.

B. Manual dumps to Object Storage:Labor-intensive and not automated.

D. MySQL replication:Suitable for high availability, but not a substitute for regular backups.

E. MySQL Enterprise Backup on nodes:Complex and not designed for HeatWave's distributed environment.

A:Exadata VM Clusters can be managed independently from the Exadata Infrastructure. This means you can start or stop the cluster without affecting the infrastructure, which provides flexibility for maintenance and performance tuning.

E:The VM Cluster can be terminated without impacting the Exadata Infrastructure. This feature is useful when you want to reassign the infrastructure resources to a new or different cluster.

Why the other options are incorrect:

B:While some adjustments might not need a reboot, core count scaling often requires restarting.

C:Patching the infrastructure and the VM Cluster are separate processes.

D:Changing the infrastructure shape does not automatically adjust VM Cluster resources. Manual reconfiguration is needed.

Comprehensive Monitoring (C):

Database Management supportsdetailed performance monitoringfor Autonomous Databases, including metrics likeCPU usage, I/O statistics, and SQL performance data.

Data Retention Limitation (D):

Theretention period for performance dataon Autonomous Databases is typically shorter than that of manually managed databases due toautomated data management policies.

Why the other options are incorrect:

A:Database Management covers more than just CPU monitoring.

B:Monitoring does not require enabling additional features on the Autonomous Database.

A. Block Volumes provide the primary storage and are directly attached to the VM.

Block Volumes:

These are persistent, durable block storage volumes that are attached to the VM instance.

Used to store database datafiles, redo logs, and other database-related files.

Standard and most common way to provision storage for BaseDB VMs.

Why the other options are incorrect:

B. Object Storage as the default for database datafiles:Object Storage is used for backups and unstructured data, not the primary database files.

C. Local NVMe as the default:Local NVMe provides high performance but is not always the default. Block Volumes are standard.

D. File Storage is mandatory for backups:Not mandatory. Block Volumes or Object Storage can also be used.

D. Dropping the entire table:

Deleting a table is adestructive operationthat permanently removes the data.

Requires the highest level of permissions due to the potential fordata lossand disruption.

Usually restricted toadministrators or highly privileged users.

Why the other options are incorrect:

A. Simple read operation:Basic permission, often granted to most users.

B. Inserting a row:Requires write permissions, but not as critical as table deletion.

C. Updating a row:Similar to insertion, modifies existing data but does not destroy the table.

C. Defines CPU, memory, and network bandwidth:

TheCompute Shapespecifies the resources allocated to the VM.

Shapes vary in the number ofOCPUs, amount ofRAM, andnetwork performance.

Selecting an appropriate shape ensures the database has enough computational power and memory to meet workload demands.

Why the other options are incorrect:

A. Number of databases:Limited by storage and resource capacity, not the shape itself.

B. Availability domain:Chosen separately during provisioning.

D. Pre-installed software version:The shape does not determine the database version.