Oracle Linux 8: System Administration III — Lesson 4: Performance Analysis, Kernel Tuning, Troubleshooting, and Recovery

Technical Scope

• CPU, memory, I/O, process, and systemd performance analysis
• kernel parameters, limits, tuned profiles, and change control
• boot recovery, rescue targets, GRUB, initramfs, and service repair
• incident runbooks, root-cause evidence, rollback, and prevention

Instructor Demonstration

Demonstrate CPU, memory, I/O, process, and systemd performance analysis within an enterprise Oracle Linux estate standardized through automation, hardened services, storage changes, performance incidents, and controlled recovery, then capture the exact configuration, command, transaction, report, trace, or code evidence that proves the expected result.

Applied Workshop

Implement a controlled workshop covering kernel parameters, limits, tuned profiles, and change control and boot recovery, rescue targets, GRUB, initramfs, and service repair, then test a failure, exception, or business-control scenario involving incident runbooks, root-cause evidence, rollback, and prevention.

1. Confirm the environment, identities, data, dependencies, controls, and expected result.
2. Complete the product-specific configuration, development, analysis, or business-process task.
3. Capture commands, configuration, output, logs, transactions, reports, or test evidence.
4. Explain the operational, security, performance, data-quality, or business trade-off.

Validation Standard

The Performance Analysis, Kernel Tuning, Troubleshooting, and Recovery result must be reproducible, traceable to approved inputs, and consistent with expected Oracle product or business-process behavior.

• The intended target, scope, and ownership are verified.
• The result is supported by reproducible evidence and expected-value checks.
• Security, performance, reliability, data quality, and support impact are reviewed.
• Unexpected behavior is investigated before acceptance or release.

Failure Analysis

Diagnose issues in CPU, memory, I/O, process, and systemd performance analysis, kernel parameters, limits, tuned profiles, and change control, boot recovery, rescue targets, GRUB, initramfs, and service repair, or incident runbooks, root-cause evidence, rollback, and prevention without making an unverified production change.

Learners isolate the smallest proven cause, apply a reversible correction, rerun validation, and record the preventive action.

Practical Outcome

Complete a validated implementation or analysis for Performance Analysis, Kernel Tuning, Troubleshooting, and Recovery and defend the result with documented evidence.