DBS-C01 Deployment and Migration Practice Question
A company is migrating a 200 GB Oracle database to Amazon RDS for Oracle. Which TWO steps should be taken to ensure a successful migration? (Choose two.)
⚠ Common exam trap
Test-takers frequently assume AWS DMS is only for heterogeneous migrations (e.g., Oracle to Aurora) and overlook its homogeneous capabilities, leading them to choose Oracle Data Pump (Option D) or incorrectly dismiss DMS (Option B).
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 full load and ongoing replication.
AWS DMS supports both homogeneous and heterogeneous migrations, and for a 200 GB Oracle database, using full load plus ongoing replication minimizes downtime by continuously applying changes from the source to the target RDS instance. This approach is ideal for migrating large databases with minimal disruption.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Enable TDE encryption on the source database before migration.
Why it's wrong here
Unnecessary and may complicate migration.
- ✗
Use AWS DMS only for heterogeneous migrations; use Oracle Data Pump instead.
Why it's wrong here
DMS supports homogeneous migrations like Oracle to Oracle.
- ✓
Use AWS DMS with full load and ongoing replication.
Why this is correct
Minimizes downtime by replicating ongoing changes.
- ✗
Export the database using expdp and import using impdp.
Why it's wrong here
Causes downtime and does not handle ongoing changes.
- ✓
Use AWS Schema Conversion Tool (SCT) to assess and convert the schema.
Why this is correct
SCT helps identify compatibility issues and convert schema.
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