DBS-C01 Monitoring and Troubleshooting Practice Question
A company is migrating its on-premises Oracle database to Amazon RDS for Oracle. The database specialist needs to monitor the migration process and ensure data consistency. Which TWO AWS services should be used together to continuously monitor the replication lag and data integrity?
⚠ Common exam trap
Test-takers frequently confuse AWS DMS with AWS Glue or SCT, thinking those services also handle continuous replication monitoring, but only DMS provides CDC metrics that CloudWatch can monitor for lag and integrity.
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 (AWS DMS)
AWS DMS is the correct service because it is specifically designed for database migrations and provides built-in monitoring of replication lag via the 'CDC latency' metric. Amazon CloudWatch is the correct complementary service because it collects and visualizes DMS metrics, including replication lag and task status, and can trigger alarms if data integrity or latency thresholds are breached.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Amazon RDS Performance Insights
Why it's wrong here
Performance Insights is for database load analysis, not replication lag.
- ✗
AWS Schema Conversion Tool (AWS SCT)
Why it's wrong here
SCT converts schema, does not monitor replication.
- ✓
AWS Database Migration Service (AWS DMS)
Why this is correct
DMS provides replication tasks and publishes latency metrics.
- ✗
AWS Glue
Why it's wrong here
Glue is for ETL jobs, not real-time replication.
- ✓
Amazon CloudWatch
Why this is correct
CloudWatch collects DMS replication metrics for monitoring.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This DBS-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 DBS-C01 exam.