SAP-C02 Practice Question: Accelerate Workload Migration and Modernization
A company is planning to migrate its on-premises Oracle database to Amazon RDS for Oracle. Which actions should the company take to minimize downtime during the migration? (Choose TWO.)
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 Schema Conversion Tool (SCT) to convert the schema and optimize for RDS.
Options D and E are correct. AWS Schema Conversion Tool (SCT) converts the schema to be compatible with Amazon RDS for Oracle, reducing compatibility issues. AWS Database Migration Service (DMS) with ongoing replication allows continuous sync from the source to target, minimizing downtime during migration. Option A (full backup and restore) requires downtime during the restore. Option B (Direct Connect) improves transfer speed but does not directly minimize downtime; it's a network enhancement. Option C (increased storage) improves write performance but does not minimize migration downtime.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Take a full backup of the on-premises database and restore it to RDS during a maintenance window.
Why it's wrong here
This causes significant downtime.
- ✗
Use AWS Direct Connect to establish a dedicated network connection for faster data transfer.
Why it's wrong here
Direct Connect improves speed but does not minimize downtime by itself.
- ✗
Increase the allocated storage on the target RDS instance to improve write performance.
Why it's wrong here
Storage increase does not directly minimize migration downtime.
- ✓
Use AWS Schema Conversion Tool (SCT) to convert the schema and optimize for RDS.
Why this is correct
SCT helps convert schema and identify potential issues, reducing downtime.
- ✓
Use AWS Database Migration Service (DMS) with ongoing replication to keep the target in sync.
Why this is correct
Ongoing replication allows near-zero downtime cutover.
Visual reference
Quick reference
AWS S3 Storage Class Comparison
| Storage Class | Min Duration | Retrieval | Use Case |
|---|---|---|---|
| S3 Standard | None | Immediate | Frequently accessed data |
| S3 Standard-IA | 30 days | Immediate | Infrequent access, rapid retrieval |
| S3 One Zone-IA | 30 days | Immediate | Non-critical infrequent data |
| S3 Intelligent-Tiering | None | Immediate–hours | Unknown or changing access patterns |
| S3 Glacier Instant | 90 days | Milliseconds | Archive with instant retrieval |
| S3 Glacier Flexible | 90 days | Minutes–hours | Archive, flexible retrieval |
| S3 Glacier Deep Archive | 180 days | Hours | Long-term compliance archive |
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