DEA-C01 Data Operations and Support Practice Question
A data engineer is monitoring an Amazon Redshift cluster and notices that some queries are experiencing high disk usage and slow performance. The engineer wants to identify the queries that are causing the most disk spills to temporary files. Which system table should the engineer query to get this information?
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
✓
SVL_QUERY_SUMMARY
SVL_QUERY_SUMMARY. This system view provides information about disk spills for each query step, including the number of bytes spilled to temporary files. It is used to identify queries causing high disk usage and slow performance due to spills. Option B, SYS_QUERY_DETAIL, contains general query execution details but not spill information. Option C, STL_SCAN, tracks table scan operations, not disk spills. Option D, STV_TBL_PERM, shows permanent table storage statistics, not temporary spill data.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
SVL_QUERY_SUMMARY
Why this is correct
SVL_QUERY_SUMMARY includes bytes spilled to disk per query step.
- ✗
SYS_QUERY_DETAIL
Why it's wrong here
SYS_QUERY_DETAIL does not include spill data.
- ✗
STL_SCAN
Why it's wrong here
STL_SCAN shows scan activity, not spills.
- ✗
STV_TBL_PERM
Why it's wrong here
STV_TBL_PERM shows permanent table sizes, not spills.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This DEA-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 DEA-C01 exam.