DBS-C01 Monitoring and Troubleshooting Practice Question
A company is monitoring an Amazon RDS for Oracle instance. CloudWatch alarms show that FreeableMemory is consistently below 256 MB. The database has high read and write I/O. Which THREE steps should the database specialist take to diagnose the issue?
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
✓
Check the MemoryPressure and LogFileSyncDuration metrics in CloudWatch.
Options A, B, and E are correct diagnostic steps. A: Checking MemoryPressure and LogFileSyncDuration helps identify memory pressure and I/O bottlenecks. B: Reviewing V$MEMORY_TARGET_ADVICE provides Oracle's memory sizing recommendations. E: Querying V$SGASTAT and V$PGASTAT reveals detailed memory allocation within SGA and PGA. Option C (enabling storage auto scaling) addresses storage, not memory. Option D (increasing instance class) is a remediation step, not a diagnostic step.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Check the MemoryPressure and LogFileSyncDuration metrics in CloudWatch.
Why this is correct
These metrics indicate memory pressure and potential performance impact.
- ✓
Review the Oracle memory advisor (V$MEMORY_TARGET_ADVICE).
Why this is correct
Memory advisor provides recommendations for sizing.
- ✗
Enable storage auto scaling to increase allocated storage.
Why it's wrong here
Storage auto scaling does not affect memory.
- ✗
Increase the DB instance class to allocate more memory.
Why it's wrong here
This is a remediation, not a diagnostic step.
- ✓
Query V$SGASTAT and V$PGASTAT to understand memory allocation.
Why this is correct
These views show SGA/PGA usage.
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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.