DBS-C01 Monitoring and Troubleshooting Practice Question
A company is using Amazon Aurora MySQL. The database performance has degraded, and the DBA wants to identify the queries that are waiting for locks. Which system table should be queried to find information about locking conflicts?
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
✓
information_schema.INNODB_LOCKS
Information_schema.INNODB_LOCKS. This table shows current locks held by InnoDB transactions, including lock type, mode, and which transactions are waiting for locks. Option A (information_schema.TABLES) provides metadata about tables, not locks. Option B (information_schema.PROCESSLIST) shows current running processes but not lock details. Option C (performance_schema.events_waits_current) shows current wait events but is not specific to InnoDB lock conflicts; INNODB_LOCKS is the correct source for identifying locking conflicts in Aurora MySQL.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
information_schema.TABLES
Why it's wrong here
TABLES shows table metadata, not locks.
- ✗
information_schema.PROCESSLIST
Why it's wrong here
PROCESSLIST shows active queries but not lock information.
- ✗
performance_schema.events_waits_current
Why it's wrong here
This table shows wait events, but not specifically locks.
- ✓
information_schema.INNODB_LOCKS
Why this is correct
INNODB_LOCKS shows current InnoDB 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.