Upgrade

Migrating from Exadata X7 to X11M is not a simple hardware swap — it is a generational architectural shift. The X11M introduces RoCE (RDMA over Converged Ethernet) replacing InfiniBand, PCIe Gen5 NVMe replacing earlier NVMe tiers, and a new compute architecture with AMD EPYC processors. This article provides an in-depth, end-to-end playbook for architects and senior DBAs planning this migration. Reference Environment All commands in this article use the following concrete hostnames and roles. Every code block identifies which server and user account the command runs from. ...

Oracle Real Application Testing (RAT) is the authoritative tool for validating changes to an Oracle database before production deployment. It enables you to replay a real production workload against a test system and measure the performance impact of changes such as database upgrades, parameter changes, hardware migrations, or schema modifications. This article walks through both RAT components — Database Replay and SQL Performance Analyzer (SPA) — with step-by-step procedures. RAT Component Overview Component What It Tests Best For Database Replay Entire production workload (concurrent sessions, timing, interactions) Database upgrades, hardware changes, OS upgrades SQL Performance Analyzer (SPA) Individual SQL statements from AWR SQL Tuning Set Optimizer changes, parameter tuning, index changes Both require the Oracle Real Application Testing licence option in addition to Enterprise Edition. ...