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PAS-C01 Migration Practice Question

A company is migrating a 5 TB Oracle data warehouse to Amazon Redshift. They need to minimize downtime and ensure data consistency. Which migration approach should they use?

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

✓

Use AWS DMS with ongoing replication and perform a cutover

Using AWS DMS with ongoing replication and performing a cutover ensures data consistency and minimizes downtime during the migration. DMS replicates changes in real-time, allowing a final cutover with zero data loss. Option A (Oracle UNLOAD and COPY) requires significant downtime for export/import. Option C (Amazon Kinesis) is for streaming, not bulk migration. Option D (AWS SCT for schema conversion) only handles schema, not data transfer.

Answer analysis

Option-by-option breakdown

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

  • ✗

    Export data using Oracle UNLOAD and COPY into Redshift

    Why it's wrong here

    Requires application downtime during export.

  • ✓

    Use AWS DMS with ongoing replication and perform a cutover

    Why this is correct

    DMS can replicate continuously and then apply final changes.

  • ✗

    Stream data using Amazon Kinesis and then load into Redshift

    Why it's wrong here

    Kinesis is for real-time streaming, not bulk historical data.

  • ✗

    Use AWS SCT to convert schema and then manually copy data

    Why it's wrong here

    Manual copy is slow and error-prone.

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