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DBS-C01 Deployment and Migration Practice Question

A company wants to migrate an on-premises Oracle database to Amazon RDS for Oracle with minimal downtime. Which AWS service should be used for the initial data load and ongoing replication?

⚠ Common exam trap

Watch out — candidates often confuse AWS Snowball (a bulk data transfer appliance) with a migration tool suitable for minimal-downtime scenarios, failing to recognize that Snowball cannot handle ongoing replication or CDC from a live database.

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) is the correct choice because it supports both full-load migration and ongoing change data capture (CDC) replication from Oracle to Amazon RDS for Oracle. DMS uses Oracle LogMiner or binary reader to capture incremental changes from the source database's redo logs, enabling near-zero downtime migration without requiring application modifications.

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 Database Migration Service (DMS)

    Why this is correct

    DMS supports full load and ongoing replication for minimal downtime.

  • ✗

    AWS Snowball

    Why it's wrong here

    Snowball is offline data transfer; does not support ongoing replication.

  • ✗

    AWS Direct Connect

    Why it's wrong here

    Direct Connect provides dedicated network connection, not data migration.

  • ✗

    AWS Schema Conversion Tool (SCT)

    Why it's wrong here

    SCT is for schema conversion, not replication.

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JA

Written by Johnson Ajibi, MSc IT Security

Senior Network & Security Engineer · founder of Courseiva

This DBS-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 DBS-C01 exam.