Kernel upgrades used to terrify me — until I mastered the process. This blog walks through how I now upgrade SAP kernels with minimal disruption and maximum confidence.
Subtopics & Answers:
Why kernel upgrades matter Security patches, performance improvements, and compatibility fixes.
Pre-upgrade prep Checking OS versions, backup strategies, and downloading the right SAR files.
Live kernel switch vs. downtime upgrade I explain both methods and when to use each.
Step-by-step upgrade process From extracting the kernel to updating profiles and restarting services.
Post-upgrade validation SM51 checks, version confirmation, and log analysis.
Rollback plan and contingency tips How I prepare for failure scenarios — and the one time I had to roll back.
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