Full Access Oracle 1z0-931-25 Tutorials

Management operations for Autonomous Databases on Shared Exadata Infrastructure are limited due to its fully managed nature. The correct statement is:

You cannot configure the scheduling for your Autonomous Databases on Shared Exadata Infrastructure (C):In shared infrastructure, Oracle fully controls maintenance scheduling (e.g., patching, upgrades). Unlike dedicated infrastructure, where users can set maintenance windows, shared ADB users cannot adjust timing. Oracle notifies users of upcoming maintenance (e.g., via email or console), typically in a 7-day window, but the exact schedule is Oracle-driven to optimize the shared Exadata platform. For example, a quarterly patch might occur on a Tuesday at 2 AM UTC, and users must adapt, not reschedule.

The incorrect options are:

You can skip a scheduled maintenance run... (A):False. Shared infrastructure does not allow skipping maintenance runs, even for two quarters. This flexibility exists only in dedicated infrastructure, where users have more control (e.g., skipping up to two consecutive updates). In shared mode, Oracle enforces updates for security and stability across all tenants.

You can perform a "rolling restart"... (B):False. Rolling restarts (restarting nodes sequentially for availability) are not user-initiated in ADB shared infrastructure. Restarts, if needed, are managed by Oracle during maintenance, and users cannot control the process orensure node-by-node availability.

You can choose to use Release Update or Release Update Revision updates... (D):False. In shared infrastructure, Oracle applies Release Updates (RUs) uniformly across all databases; users cannot choose between RU or Release Update Revisions (RURs), a feature reserved for dedicated deployments.

This reflects the trade-off of shared infrastructure: lower cost and management effort for less control.

When an Autonomous Database is stopped, limited actions are available:

Correct Answer (B):Startis possible to bring the database back online via the OCI Console or API.

Correct Answer (C):Update License type(e.g., from License Included to Bring Your Own License) can be performed while stopped, as it’s a configuration change not requiring database activity.

Incorrect Options:

A: Changing the admin password requires the database to be running for security validation.

Addressing a storage I/O bottleneck for insert throughput in Autonomous Database involves resource adjustments:

Correct Answer (C): “Increase the number of OCPUs allocated to the database” boosts processing power, which directly improves I/O performance. In Autonomous Database, OCPUs handle both compute and I/O operations; more OCPUs increase the I/O bandwidth, reducing the bottleneck for insert-heavy workloads.

Incorrect Options:

A: Removing non-JSON data may optimize storage use but doesn’t directly addressI/O throughput for inserts.

B: “Noisy neighbors” is a shared infrastructure concern, but migration isn’t a standard solution for I/O bottlenecks and requires Oracle intervention, not user control.

Migrating to Autonomous Database requires robust tools:

Correct Answer (B):Oracle Zero Downtime Migration (ZDM)minimizes downtime by synchronizing data and schema changes while the source remains online, ideal for critical systems.

Correct Answer (C):GoldenGateprovides real-time replication, enabling near-zero downtime migration by continuously syncing data to Autonomous Database.

Correct Answer (D):Data Pumpexports data and schema to dump files, which are then imported into Autonomous Database, suitable for offline migrations.

Incorrect Options:

A: SFTP with CSV files is not a comprehensive migration method; it lacks schema migration and automation for complex databases.