Independent Oracle systems architect. Practical guides on RAC, Data Guard, RMAN, performance tuning, OCI and Azure migration, 23ai/26ai, and database security — for teams running mission-critical Oracle.https://uptimearchitect.com/https://uptimearchitect.com/blog/how-to-read-an-awr-report/https://uptimearchitect.com/blog/how-to-read-an-awr-report/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.Sat, 06 Jun 2026 00:00:00 GMThttps://uptimearchitect.com/blog/oracle-ha-decision-tree-rac-vs-data-guard/https://uptimearchitect.com/blog/oracle-ha-decision-tree-rac-vs-data-guard/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.Sat, 30 May 2026 00:00:00 GMThttps://uptimearchitect.com/blog/oracle-rac-node-eviction-troubleshooting/https://uptimearchitect.com/blog/oracle-rac-node-eviction-troubleshooting/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.Sun, 07 Jun 2026 00:00:00 GMT