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PAS-C01 Migration Practice Question

A company is planning to migrate a legacy Oracle database to Amazon RDS for Oracle. The database is 500 GB and has a 24/7 workload. The company needs minimal downtime. Which AWS service should be used for the migration?

Answer choices

Why each option matters

Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.

Correct answer & explanation

✓

AWS Database Migration Service (DMS)

AWS Database Migration Service (DMS). AWS DMS supports homogeneous migrations (Oracle to Oracle) and can perform minimal-downtime migrations by using change data capture (CDC) to replicate ongoing changes after the initial full load. Option A (AWS CLI) is not a migration service; it's a command-line tool for managing AWS services. Option B (AWS Schema Conversion Tool) is used for converting schema when migrating between different database engines, not for data migration itself. Option C (AWS Snowball) is a physical data transfer device for large datasets, but it does not support minimal-downtime online migrations for a 24/7 workload.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

  • ✗

    AWS Command Line Interface (CLI)

    Why it's wrong here

    CLI is for managing AWS services, not for database migration.

  • ✗

    AWS Schema Conversion Tool (SCT)

    Why it's wrong here

    SCT only converts schema, not data.

  • ✗

    AWS Snowball

    Why it's wrong here

    Snowball is for offline data transfer, not minimal-downtime online migration.

  • ✓

    AWS Database Migration Service (DMS)

    Why this is correct

    DMS supports minimal-downtime migrations with ongoing replication.

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Written by Johnson Ajibi, MSc IT Security

Senior Network & Security Engineer · founder of Courseiva

This PAS-C01 practice question is part of Courseiva's free Amazon Web Services certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the PAS-C01 exam.