This PAS-C01 practice question tests your understanding of design of sap workloads on aws. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A company runs SAP ERP 6.0 on an Oracle database on EC2. The system is experiencing high CPU usage on the database server during peak hours. Analysis shows that the CPU is consumed by log writes. Which configuration change can reduce CPU usage?
Disable archiving of redo logs.
Why wrong: Disabling archiving is not safe and may cause data loss.
Switch from EBS gp3 to io2 Block Express volumes.
Why wrong: Improves I/O but not CPU.
Upgrade to a larger EC2 instance type with more vCPUs.
Why wrong: Does not reduce log write CPU usage.
Increase the Oracle log buffer size to reduce the number of log write operations.
Larger log buffer reduces write frequency, lowering CPU usage.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Increase the Oracle log buffer size to reduce the number of log write operations.
High CPU usage from log writes indicates that the database is spending excessive CPU cycles on writing redo log entries to disk. Increasing the Oracle log buffer size reduces the frequency of log write operations by allowing more redo data to accumulate before a write is triggered, thereby lowering CPU overhead. This directly addresses the root cause without changing storage or compute capacity.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Disable archiving of redo logs.
Why it's wrong here
Disabling archiving is not safe and may cause data loss.
Switch from EBS gp3 to io2 Block Express volumes.
Why it's wrong here
Improves I/O but not CPU.
Upgrade to a larger EC2 instance type with more vCPUs.
Why it's wrong here
Does not reduce log write CPU usage.
Increase the Oracle log buffer size to reduce the number of log write operations.
Why this is correct
Larger log buffer reduces write frequency, lowering CPU usage.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
The trap here is that candidates often confuse storage performance improvements (like faster EBS volumes) with database-level tuning, assuming that faster I/O reduces CPU usage, when in fact the CPU is consumed by the overhead of too many small write operations, not by slow I/O.
Detailed technical explanation
The Oracle log buffer is a memory area in the SGA that caches redo entries before they are written to online redo log files by the LGWR process. When the log buffer is too small, LGWR flushes frequently (e.g., every 3 seconds or when one-third full), causing high CPU usage from repeated write system calls. Increasing the log buffer size (via the `LOG_BUFFER` parameter) allows larger batch writes, reducing context switches and CPU overhead, especially under heavy DML workloads typical in SAP ERP.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
What to study next
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FAQ
Design of SAP Workloads on AWS — This question tests Design of SAP Workloads on AWS — Read the scenario before looking for a memorised answer..
The correct answer is: Increase the Oracle log buffer size to reduce the number of log write operations. — High CPU usage from log writes indicates that the database is spending excessive CPU cycles on writing redo log entries to disk. Increasing the Oracle log buffer size reduces the frequency of log write operations by allowing more redo data to accumulate before a write is triggered, thereby lowering CPU overhead. This directly addresses the root cause without changing storage or compute capacity.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 24, 2026
This PAS-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 PAS-C01 exam.
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