DBS-C01 Management and Operations Practice Question
A company is migrating an on-premises Oracle database to Amazon RDS for Oracle. Which TWO methods can the database specialist use to minimize downtime during the migration?
⚠ Common exam trap
Many candidates assume any backup-and-restore or export/import method (like RMAN or Data Pump) can be performed with minimal downtime, but these methods inherently require the source database to be offline or in a consistent state for a significant period, unlike continuous replication technologies such as GoldenGate or DMS with CDC.
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 Oracle GoldenGate to replicate data continuously.
Oracle GoldenGate enables continuous, real-time data replication from the source Oracle database to Amazon RDS for Oracle, allowing the source to remain fully operational during the migration. When the cutover is performed, only a brief pause is needed to apply any final transactions, minimizing downtime to seconds or minutes.
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 Oracle Recovery Manager (RMAN) to back up and restore.
Why it's wrong here
RMAN is not supported for RDS.
- ✓
Use Oracle GoldenGate to replicate data continuously.
Why this is correct
GoldenGate provides real-time replication with minimal downtime.
- ✓
Use AWS Database Migration Service (DMS) with ongoing replication.
Why this is correct
DMS with replication minimizes downtime.
- ✗
Take a full database backup and restore to RDS.
Why it's wrong here
Backup and restore causes downtime.
- ✗
Use Oracle Data Pump to export and import the database.
Why it's wrong here
This method requires downtime.
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