- A
Use AWS Schema Conversion Tool (SCT) to convert the schema and then copy data files directly.
Why wrong: SCT is for schema conversion, not data movement; copying data files is not supported.
- B
Use AWS Database Migration Service (DMS) with ongoing replication from the source Oracle database.
DMS supports full load + CDC, reducing downtime.
- C
Take a physical backup of the on-premises database and restore to RDS.
Why wrong: RDS does not support restoring on-premises physical backups directly.
- D
Export data using Oracle Data Pump and import into RDS.
Why wrong: This approach requires significant downtime for export and import.
Question 518 of 1,730
DBS-C01 Workload-Specific Database Design Practice Question
This DBS-C01 practice question tests your understanding of workload-specific database design. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A company wants to migrate their on-premises Oracle database to Amazon RDS for Oracle. They have a complex data loading process that uses Oracle Data Pump. Which migration approach is MOST efficient and minimizes downtime?
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 Database Migration Service (DMS) with ongoing replication from the source Oracle database.
AWS DMS with ongoing replication (change data capture, CDC) is the most efficient approach for migrating an Oracle database to Amazon RDS for Oracle with minimal downtime. It allows a full load of the existing data followed by continuous replication of changes from the source until cutover, reducing the outage window to seconds or minutes. This directly addresses the requirement to minimize downtime while handling complex data loading processes.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Use AWS Schema Conversion Tool (SCT) to convert the schema and then copy data files directly.
Why it's wrong here
SCT is for schema conversion, not data movement; copying data files is not supported.
- ✓
Use AWS Database Migration Service (DMS) with ongoing replication from the source Oracle database.
Why this is correct
DMS supports full load + CDC, reducing downtime.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Take a physical backup of the on-premises database and restore to RDS.
Why it's wrong here
RDS does not support restoring on-premises physical backups directly.
- ✗
Export data using Oracle Data Pump and import into RDS.
Why it's wrong here
This approach requires significant downtime for export and import.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often assume Oracle Data Pump (Option D) is the fastest because it is a native Oracle tool, but they overlook the requirement to minimize downtime, which DMS with CDC addresses by allowing the source to remain operational until the final cutover.
Detailed technical explanation
How to think about this question
AWS DMS for Oracle uses Oracle LogMiner or binary reader to capture ongoing changes from the redo logs, enabling near-real-time replication with minimal latency. The full load phase uses parallel table loading and can handle large datasets efficiently, while the CDC phase ensures zero data loss during cutover. In practice, DMS can achieve sub-second replication lag for most workloads, but it requires supplemental logging to be enabled on the source Oracle database to capture all changes.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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Workload-Specific Database Design — study guide chapter
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FAQ
Questions learners often ask
What does this DBS-C01 question test?
Workload-Specific Database Design — This question tests Workload-Specific Database Design — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Use AWS Database Migration Service (DMS) with ongoing replication from the source Oracle database. — AWS DMS with ongoing replication (change data capture, CDC) is the most efficient approach for migrating an Oracle database to Amazon RDS for Oracle with minimal downtime. It allows a full load of the existing data followed by continuous replication of changes from the source until cutover, reducing the outage window to seconds or minutes. This directly addresses the requirement to minimize downtime while handling complex data loading processes.
What should I do if I get this DBS-C01 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jul 4, 2026
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