DBS-C01 Monitoring and Troubleshooting Practice Question
An e-commerce application uses Amazon Aurora MySQL. During a flash sale, the database experiences a surge in write operations, and the application reports 'Lock wait timeout exceeded' errors. The DBA suspects a long-running transaction is blocking others. Which AWS tool or feature should the DBA use to identify the blocking transaction?
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
✓
Amazon Aurora Performance Insights with the 'Wait for lock' dimension
Amazon Aurora Performance Insights with the 'Wait for lock' dimension can identify blocking sessions by showing which sessions are waiting on locks and which session holds the lock. Option B (Amazon Inspector) is a security assessment tool and does not provide database lock information. Option C (CloudWatch Logs Insights) can analyze logs but does not directly identify blocking transactions. Option D (Amazon RDS Enhanced Monitoring) provides OS-level metrics, not database-level lock information.
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 Aurora Performance Insights with the 'Wait for lock' dimension
Why this is correct
Performance Insights can display blocking sessions and wait events.
- ✗
Amazon Inspector
Why it's wrong here
Inspector is for security vulnerabilities, not database performance.
- ✗
CloudWatch Logs Insights
Why it's wrong here
Logs Insights can query logs but cannot directly show blocking transactions.
- ✗
Amazon RDS Enhanced Monitoring
Why it's wrong here
Enhanced Monitoring shows OS metrics, not database locks.
Go deeper
Related to this question
About these practice questions
This DBS-C01 question is part of Courseiva's 1,663-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. Learn why practice questions differ from exam dumps →
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.