Oracle Linux 10 – Common Problem 039 – Diagnosis and Fix

📖 ~1 min read

Table of contents

1. Symptom & Impact
2. Environment & Reproduction
3. Root Cause Analysis
4. Quick Triage
5. Step-by-Step Diagnosis
6. Solution – Primary Fix
7. Solution – Alternative Approaches
8. Verification & Acceptance Criteria
9. Rollback Plan
10. Prevention & Hardening
11. Related Errors & Cross-Refs
12. References & Further Reading

Symptom & Impact

Crash dump capture is disabled unexpectedly after update.

Environment & Reproduction

systemctl status kdump reports failed reservation or inactive state.

Root Cause Analysis

Check grub cmdline for crashkernel parameter and journalctl -u kdump.

Quick Triage

crashkernel memory reservation missing or too small.

Step-by-Step Diagnosis

Set appropriate crashkernel in GRUB, regenerate config, reboot.

Solution – Primary Fix

Confirm kdump service active and kdumpctl showmem output valid.

Solution – Alternative Approaches

Validate crashkernel after each kernel rollout.

Verification & Acceptance Criteria

Revert to previous boot entry if reservation causes instability.

Rollback Plan

Use compliance checks for kdump enabled state.

Prevention & Hardening

grubby –info=ALL; systemctl enable –now kdump

Related Errors & Cross-Refs

Attach boot cmdline and kdump journal logs.

Related tutorial: View the step-by-step tutorial for oracle-linux-10.

View all oracle-linux-10 tutorials on the Tutorials Hub →

Browse all common problems & solutions on the Tutorials Hub.

References & Further Reading

Reserved memory requirements vary by workload and RAM size.