Oracle 26ai Data Guard & Data Guard Broker
A Complete Step-by-Step Implementation Guide — RAC Primary to Standalone Physical Standby on ASM Oracle Data Guard remains Oracle's flagship enterprise solution for High Availability (HA) and Disaster Recovery (DR). This guide walks through a real, end-to-end Oracle 26ai implementation that connects a 2-node RAC primary running on ASM to a standalone physical standby — including parameter setup, RMAN duplication, Data Guard Broker configuration, and a successful switchover. It also highlights what is genuinely new in 26ai Data Guard. Table of Contents Introduction — Why Data Guard Still Matters Architecture Overview Objectives of This Implementation Prerequisites & Readiness Checklist Primary Database Configuration Initialization Parameters & Standby Redo Logs Network Configuration (hosts, tnsnames, listener) Password File & PFILE Setup Creating the Standby with RMAN Duplicate Starting Redo Apply Verification & Real-Time Apply Test Data Guard Broker Configurat...