PAS-C01 Migration Practice Question
A company is migrating a critical Oracle database to Amazon RDS for Oracle. The database is 2 TB in size and has a high transaction rate. The migration must have minimal downtime. Which TWO AWS services or features should be used to achieve this? (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
✓
AWS Database Migration Service (DMS) with ongoing replication
AWS Database Migration Service (DMS) with ongoing replication (change data capture) is the correct approach for minimal downtime migration. AWS Schema Conversion Tool (SCT) is used for schema conversion, which is necessary when moving to RDS Oracle. Option A (AWS DataSync) is for file/object transfers, not suitable for database migration. Option C (AWS Snowball) is for large offline data transfer, not suitable for minimal downtime. Option D (AWS Server Migration Service) is for server migration, not databases.
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 DataSync
Why it's wrong here
DataSync is used for moving large amounts of data to and from AWS storage services, not for database replication.
- ✓
AWS Database Migration Service (DMS) with ongoing replication
Why this is correct
AWS DMS supports ongoing replication to keep the target database in sync with the source, enabling minimal downtime migration.
- ✗
AWS Snowball
Why it's wrong here
Snowball is for offline data transfer, which would cause significant downtime.
- ✗
AWS Server Migration Service (SMS)
Why it's wrong here
SMS is for migrating on-premises servers to AWS as AMIs, not for database migration.
- ✓
AWS Schema Conversion Tool (SCT)
Why this is correct
SCT is needed to convert the source Oracle schema to Amazon RDS Oracle compatible format.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This PAS-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 PAS-C01 exam.