1z0-931-25 Oracle Autonomous Database Cloud 2025 Professional Free Practice Exam Questions (2025 Updated)

Migrating to Autonomous Database supports multiple methods. The three correct options are:

GoldenGate on-premise installation (A):Oracle GoldenGate (on-prem) replicates data from source databases (e.g., Oracle, MySQL) to ADB, supporting real-time or batch migration. You install GoldenGate on-prem, configure extract/replicat processes (e.g., extracting from an Oracle 19c source), and target an ADB instance using credentials and wallet. For example, it might sync an on-prem ORDERS table to ADB with near-zero latency, ideal for live migrations.

GoldenGate Cloud Service (D):GoldenGate Cloud Service, a managed OCI offering, performs the same replication but runs in the cloud. You provision it via OCI Marketplace, configure it to pull from a source (e.g., on-prem or another cloud), and push to ADB. For instance, it could replicate a SaaS database to ADB for analytics, minimizing on-prem overhead. Both GoldenGate options support initial loads and continuous sync.

Data Pump export/import (E):Data Pump exports data/schemas from a source (e.g., expdp hr/hr schemas=HR directory=DATA_PUMP_DIR) to a dump file, which you upload to OCI Object Storage. Then, import into ADB using DBMS_CLOUD.COPY_DATA (e.g., targeting a HR schema). It’s great for one-time migrations, like moving a 12c database to ADB, with flexibility to exclude objects (e.g., indexes).

The incorrect options are:

RMAN Cross-Platform backup and restore (B):RMAN restores physical backups, but ADB’s managed nature prevents direct RMAN restores—users can’t access the file system. RMAN is used for ADB backups internally by Oracle, not customer migrations.

Data Guard Physical Standby (C):Data Guard creates physical standbys for HA, not migration to ADB. ADB uses Autonomous Data Guard internally, but it’s not a migration tool from external sources.

PDB unplug/plug operation (F):Unplugging/plugging PDBs requires file-level access, unsupported in ADB due to its managed storage. You’d use Data Pump instead for PDB data.

These methods offer robust, flexible migration paths to ADB.

Full Detailed In-Depth Explanation:

The correct sequence for Oracle Machine Learning (OML) is:

Create Oracle Machine Learning User:First step to enable OML access.

Create Workspaces:Containers for organizing projects.

Create Projects:Groups for related notebooks within a workspace.

Create Notebooks:Environments for coding and analysis.

Run SQL Scripts:Executed within notebooks.

In the given list,Create Projects (2)comes beforeCreate Workspaces (3), which is reversed. Workspaces must exist before projects. Thus, C and D are out of order.

Moving resources between compartments in OCI has specific rules:

Correct Answer (C): “Autonomous Exadata Infrastructure instances and Autonomous Container Databases have no dependent resources that move with them. Associated (non-dependent) resources remain in their current compartments” is correct. For dedicated deployments, moving these resources leaves related items (e.g., backups, network configurations) in their original compartments unless explicitly moved.

Incorrect Options:

A: Backups move with the database instance in shared infrastructure, not dedicated.

B: Permissions are required for both source and target compartments.