Oracle Cloud Infrastructure 1z0-1093-25 Reddit Questions

B:Database Management directly queries the database to gather performance data, such as SQL performance and active session history. It also integrates with OCI Monitoring for infrastructure-level metrics like CPU, memory, and storage utilization.

C:Database Management can function independently of OCI Monitoring since it has its own data collection mechanisms.

Why the other options are incorrect:

A:Database Management does not rely solely on OCI Monitoring.

D:It does not require custom metrics from the user.

B. Automation of provisioning and management:

Cloud Tooling automates key tasks such asprovisioning, patching, scaling, and maintenance.

Reduces manual configuration errors and saves time.

Ensures consistency in setup and updates, minimizing downtime.

Greatly simplifies lifecycle management, making cloud deployments more efficient than on-premises.

Why the other options are incorrect:

A. More granular hardware control:Cloud tooling abstracts low-level hardware management.

C. No DBA intervention:While reduced, DBAs still handle application-specific configurations and performance tuning.

D. Using older database versions:Exadata Cloud Service supportsonly supported versions, not deprecated ones.

HeatWave's Columnar Processing:

HeatWave improves OLAP performance by storing data in acolumnar formatin memory. This format is particularly efficient foranalytical queriesbecause:

It minimizes the amount of data read by only scanning thenecessary columns.

Columnar storage supportsvectorized processing, which significantly speeds up aggregation operations.

Beingin-memory, it eliminates disk I/O bottlenecks, crucial for high-speed analytics.

Why the other options are incorrect:

A:Indexing is useful, but columnar storage is the primary driver of speed.

C:Caching improves access times but does not address the fundamental OLAP challenge of processing large datasets.

D:HeatWave distributes workload usingparallel processing, not simple sharding.

E:AI-powered indexing is not a core feature of HeatWave.

B. Using Data Guard for physical standby and switchover:

This method enablesminimal downtimemigration.

Steps:

Configure Data Guard to synchronize thestandby databasewith the primary on-premises database.

Once synchronized, perform aswitchoverto make the standby the new primary.

Downtime is limited to the switchover duration.

This approach leveragesreal-time replicationto minimize disruption.

Why the other options are incorrect:

A. Export/Import with Data Pump:Too time-consuming for large databases.

C. Full backup and restore:High downtime due to the time required for data transfer and restoration.

D. Copying via SQL Developer:Not feasible for mission-critical and large databases due to slow transfer speeds.