The blog
Practical, vendor-neutral Oracle engineering — verified against real systems.
- HA & DR •
RAC Node Eviction: A Troubleshooting Checklist That Starts With "Why"
Oracle RAC node eviction explained from the logs up: the three heartbeats, misscount vs disktimeout, split-brain and voting disks, rebootless restart — and a checklist to find the real cause (interconnect, storage, or a starved node) and stop it recurring.
- Performance •
How to Read an AWR Report Without Drowning
A practitioner field guide to Oracle AWR and ASH: DB Time as the master metric, the five sections that matter, the wait events decoded, the ratios to ignore — and a free hands-on lab to generate a real report.
- HA & DR •
The Oracle HA Decision Tree: RAC vs Data Guard vs Both
RAC survives node failure; Data Guard survives site loss and corruption; only backups survive a bad DELETE. A practical RAC-vs-Data-Guard decision framework with RTO/RPO, MAA tiers, switchover/failover, and a free lab.