Oracle AI Database 26ai is shipping on-premises Linux x86-64 as RU 23.26.1, bringing GROUP BY ALL, DATEDIFF, expanded AI Vector Search, deeper True Cache integration, and a monthly Critical Security Patch Update (CSPU) cadence starting May 2026. Here is the engineer's view of what is actually new, what it changes for your maintenance windows, and the cleanest upgrade path from 19c or 23ai.

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Oracle AI Database 26ai is the biggest release since 12c — and 3 things will break when you upgrade from 19c. In this post, I break down the top 5 features every DBA must know: AI Vector Search & RAG, JSON Duality Views, PDB-Level Data Guard, SQL Firewall, and True Cache. Plus the complete 19c → 26ai upgrade path using AutoUpgrade.

Oracle AI Database 26ai installation on Oracle Linux 9 is one of the most searched topics among Oracle DBAs as Oracle introduces its next-generation AI-enabled database platform. In this detailed guide, you’ll learn how to install Oracle Database 26ai on Oracle Linux 9 using the GUI installer, followed by creating the database using DBCA (Database Configuration Assistant). This article is written for: Oracle DBA beginners Working professionals Interview preparation Lab and re