The transition from Oracle Database 23ai to 26ai is more than a generational shift; it represents a fundamental reimagining of how data and AI intersect. Unlike traditional database upgrades, which often require complex migrations or application re-certifications, moving to 26ai is seamless. Existing users can adopt the new capabilities by simply applying the October 2025 release update, with no additional cost for the advanced AI features. Beyond the ease of transition, Oracle AI Database 26ai introduces a robust, long-term support release designed to fully integrate AI into multicloud environments, redefining how organizations harness data for intelligent, scalable, and secure operations. This isn’t just a new name—this update is a foundational leap in AI-integrated architecture.
The Architecture of "Zero-Mover" AI: Eliminating Multicloud Latency with a Converged Data Engine
Oracle Database 26ai introduces the groundbreaking concept of "Zero-Mover" AI, a design philosophy that keeps vectors, JSON, and relational data all in one engine. By consolidating numerous data types on a single platform, 26ai removes the latency and complexity that are common in multicloud designs, allowing enterprises to innovate faster and more efficiently.
One Database for All Data Types
At the heart of this architecture is a converged data model. Oracle 26ai allows applications to store and access relational tables, JSON documents, and graph data within the same engine, without duplicating data or maintaining separate pipelines. This convergence brings several critical advantages:
JSON-Relational Duality and Graph Views: Applications can interact with the same dataset through multiple models—relational queries, JSON operations, or graph traversals—without moving or transforming the data.
Unified Analytics Across Data Shapes: Because all data types coexist in the same engine, complex analytics can be performed across relational, semi-structured, and graph data seamlessly.
Simplified App Migration: Existing MongoDB applications can be transitioned to Oracle 26ai using MongoDB-compatible APIs, reducing friction and preserving developer workflows.
Flexible Querying: Developers can query relational tables, JSON documents, or graph structures directly, allowing a single dataset to power multiple workloads simultaneously.
True Caching with Real-Time Consistency
Traditional databases often require manual caching layers to maintain performance, demanding constant code updates and synchronization. 26ai changes this paradigm with automatic, consistent caching:
Data in cache is always up-to-date with the underlying database.
Changes propagate in real time without developer intervention.
Performance-sensitive applications benefit from faster access without compromising data integrity.
Globally Distributed, High-Availability Architecture
Oracle 26ai supports breaking a single logical database into multiple physical nodes across the globe, enhancing scalability and availability. Key innovations include:
Raft-Based Replication: Provides robust consensus protocols for distributed environments.
Multimaster, Active-Active Deployments: Achieves failover in approximately 3 seconds with zero data loss, enabling true continuous availability.
Enhanced Security: Built-in SQL firewall capabilities protect against SQL injection attacks, safeguarding critical enterprise data.
Expanding Beyond Traditional Data Limitations
Historically, databases were limited to structured and semi-structured queries. Oracle 26ai transcends these limitations, allowing organizations to query, analyze, and operationalize vector, JSON, relational, and graph data all within a single engine. This integrated approach significantly streamlines development, minimizes latency in multicloud settings, and enhances the speed of AI-driven insights.
With its “Zero-Mover” architecture, Oracle 26ai enhances performance while also reshaping the potential of AI-native multicloud database systems—enabling organizations to innovate faster than ever before.
Vector Search Deep Dive: Understanding the VECTOR Data Type and HNSW/IVF Indexes
In today’s enterprise environments, customer data is often distributed across multiple technologies: relational databases, document stores, graph databases, etc. Oracle Autonomous Database 26ai addresses this challenge by providing a single, converged platform where AI, analytics, and transactional workloads coexist seamlessly. One of the key enablers of this architecture is Vector Search, which allows organizations to leverage unstructured and structured data together while scaling efficiently, securely, and with high performance.
The VECTOR Data Type: Making Unstructured Data Usable
The VECTOR data type is designed to represent complex, high-dimensional data—think embeddings generated from text, images, or other AI models. These vectors capture semantic relationships, enabling sophisticated AI applications such as personalized recommendations, similarity searches, and retrieval-augmented generation (RAG) for LLMs.
By integrating VECTOR storage natively within the database, Oracle 26ai eliminates the need to move data between silos. You can combine relational, JSON, text, spatial, graph, and vector data in a single query—unlocking powerful insights without duplicating or migrating data.
High-Performance Vector Indexing: HNSW and IVF
To efficiently search vectors, Oracle 26ai uses advanced indexing techniques:
HNSW (Hierarchical Navigable Small World): Optimized for high recall and low latency, HNSW enables fast approximate nearest neighbor (ANN) searches, ideal for recommendation engines or AI-driven personalization.
IVF (Inverted File Index): Well-suited for large-scale datasets, IVF partitions vectors into clusters for efficient retrieval, improving performance and scalability for massive AI workloads.
These indexing methods allow Oracle to deliver high-speed, low-latency vector queries, even at scale, without compromising accuracy.
AI Vector Search in Action
Oracle 26ai combines vector search with a broad range of functionality, including:
Structured + Unstructured Queries: Run queries that seamlessly combine relational tables, JSON documents, text, spatial data, and vectors.
Personalized AI Recommendations: Embed vectors from user activity or content, and combine with LLMs for RAG-based insights.
Exadata Acceleration: Offload vector queries to Exadata Intelligent Storage for faster execution, leveraging both legacy and new Exadata Exascale architectures for extreme elasticity at low cost.
Natural Language to SQL (MCP Support): LLMs can query your database in natural language using Model Context Protocol (MCP). The protocol allows the LLM to understand your schema, try multiple query paths, and retrieve additional context dynamically—reducing hallucinations and improving accuracy.
Enterprise-Ready AI Capabilities
Oracle 26ai delivers the industrial-strength features enterprises demand:
Scalability & Performance: Handle massive datasets with low-latency queries.
High Availability & Security: Protect sensitive business data with built-in safeguards, including SQL firewalling and globally distributed active-active deployments.
Full Generative AI Pipeline: From document ingestion and embedding generation to similarity search and LLM integration for RAG, Oracle 26ai provides a complete AI workflow natively within the database or accessible via APIs.
With Oracle AI Vector Search, enterprises can bring AI to the data rather than moving the data to AI, enabling faster innovation, simplified architecture, and real-time intelligence at scale.
Beyond RAG: Introducing Select AI Agents—Automating Multi-Step Workflows with 26ai
Oracle Database 26ai goes beyond retrieval-augmented generation (RAG) with Select AI Agents, a fully integrated autonomous agent framework that automates complex, multi-step workflows directly inside the Autonomous AI Database. These intelligent agents leverage advanced reasoning, tool use, reflection, and memory to perform tasks without requiring separate infrastructure, enabling enterprises to operationalize AI safely, efficiently, and at scale.
What is Select AI Agent?
Select AI Agent is a program for creating and managing interactive and autonomous agents within the database. Each agent:
Reasons for requests using the ReAct (Reasoning + Acting) pattern.
Calls tools such as RAG, Natural Language to SQL (NL2SQL), custom PL/SQL procedures, and external REST APIs.
Reflects on results to adjust strategies and improve outcomes.
Maintains context with short-term session memory and long-term memory for personalization, preferences, and historical interactions.
This framework enables context-aware generative AI that integrates directly with enterprise data and workflows, supporting applications that are intelligent, secure, and scalable.
Key Features of Select AI Agents
Integrated Intelligence
Agents continuously loop through reasoning, acting, evaluating, and adjusting. This approach reduces rework, increases accuracy, and ensures agents respond confidently to complex queries.
Flexible Tooling
Agents can access a broad range of tools:
Built-in RAG and NL2SQL capabilities for AI-driven query and retrieval.
Custom PL/SQL procedures for database operations.
External REST APIs to integrate third-party services.
Context-Aware Conversations
Short-term memory maintains coherence across multi-turn dialogues.
Long-term memory stores preferences and historical outcomes to support personalization, human-in-the-loop oversight, and progressive learning.
Scalable and Secure
Agents inherit the database’s enterprise-grade security, auditing, and performance. They support distributed workloads while ensuring governance, minimizing data duplication, and reducing infrastructure overhead.
Faster Development
Developers can define agents using familiar SQL and PL/SQL, reuse existing logic, and deploy sophisticated AI capabilities quickly without building separate services.
The ReAct Agentic Pattern
Select AI Agents follow the ReAct (Reasoning + Acting) pattern:
Planning: Interprets user requests, breaks tasks into actionable steps, and selects appropriate tools.
Tool Use: Executes built-in, custom, or external tools to retrieve or act on data.
Reflection: Evaluates results, corrects errors, and refines actions to improve accuracy.
Memory Management: Maintains both short-term session context and long-term knowledge to ensure continuity, personalization, and smarter future interactions.
Use Cases for Select AI Agents
External API Integration:
Agents can connect to REST services—such as shipping, messaging, or knowledge bases—merge external data with enterprise data, and deliver timely, actionable responses.
Task-Specific Automation with PL/SQL
Developers can build agents that run PL/SQL tools for validations, updates, or transformations, keeping logic close to the data for higher performance, simpler maintenance, and consistent transactional control.
Conversational Data Access
Agents allow users to ask questions in natural language. Using NL2SQL, the agents convert queries into secure, governed SQL statements, returning results with clear summaries and recommended next steps.
Building AI Agents and Applications with 26ai
Oracle 26ai empowers developers to create AI-driven applications that leverage live business data directly:
Build agents that query data, run AI/ML models, and return insights in real time.
Combine similarity search with relational, JSON, text, spatial, and graph data—all within a single database.
Support RAG workflows that guide LLMs using private enterprise data, reducing hallucinations.
Use preferred development tools, frameworks, AI models, and programming languages to build AI applications your way.
With Select AI Agents, Oracle 26ai enables enterprise-grade AI automation—bringing intelligence, context, and multi-step reasoning to business processes while reducing complexity and infrastructure overhead.
OCI-Azure Setup: The Integrated Ecosystem
The Oracle Database@Azure partnership focuses on deep software integration and a unified management experience, treating OCI resources as if they were native to the Azure environment.
1. Strategic Benefits
Unified Management: Provision and monitor Exadata and Autonomous Database services directly from the Azure Portal.
Identity Federation: Native integration with Microsoft Entra ID (formerly Azure AD) for consistent security across clouds.
Collaborative Support: A joint support model where Oracle and Microsoft engineers work together on a single ticket.
2. Architectural Building Blocks
Oracle Database Service (PaaS): Managed OCI database services running on OCI hardware co-located in Azure data centers.
Azure VNet Integration: Direct plumbing into your existing Azure Virtual Networks, making the OCI database appear as a local resource.
App Service Interop: Ideal for .NET applications, Azure DevOps, and PowerBI dashboards requiring low-latency data access.
3. Technical Implementation
OCI-Azure Interconnect: A private, high-speed bridge between the two clouds.
BGP Routing: Uses Border Gateway Protocol for dynamic routing between OCI VCNs and Azure VNets.
Redundancy: Standard setups require two BGP sessions; additional circuits can be added for mission-critical failover.
4. Bandwidth & Cost Considerations
Feature | OCI-Azure Metrics |
Max Throughput | Up to 10 Gbps (Symmetrical) |
OCI Pricing | Fixed FastConnect port fees; zero ingress/egress charges. |
Azure Pricing | ExpressRoute charges based on SKU, region, and data plan. |
OCI-AWS Setup: The Performance Powerhouse
The Oracle Database@AWS deployment focuses on placing OCI’s specialized Exadata hardware directly inside AWS Availability Zones to serve high-performance, cloud-native AWS applications.
1. Strategic Benefits
Minimized Latency: By placing OCI hardware inside AWS infrastructure, latency is reduced to sub-millisecond levels.
AWS Service Synergy: Seamlessly connect Oracle Database 23ai to AWS SageMaker for AI/ML or Lambda for serverless functions.
Data Sovereignty: Maintain OCI-grade security and compliance while leveraging AWS’s global footprint.
2. Architectural Building Blocks
ODB Network: A dedicated foundation layer in AWS that defines subnets for database traffic and backups.
Exadata Infrastructure: The physical layer (X9M/X11M) is deployed within the AWS AZ.
VM Cluster: The virtualization layer where you define CPU, memory, and storage allocations for your 23ai instances.
3. Technical Implementation
Partner Links/Direct Connect: Utilizes high-speed dedicated links via AWS Direct Connect to interface with OCI resources.
CIDR Constraints: Unlike Azure, AWS deployments have strict IP range restrictions (e.g., avoiding reserved ranges like 100.106.0.0/16).
IAM Onboarding: Requires an AWS private offer acceptance and mapping of AWS IAM roles to OCI policies.
4. Bandwidth & Cost Considerations
Feature | OCI-AWS Metrics |
Max Throughput | Scalable based on Direct Connect partner capacity. |
OCI Pricing | Fixed FastConnect fees; first 10 TB of monthly egress is free. |
AWS Pricing | Direct Connect port hours + egress data transfer fees. |
Direct Comparison Table: OCI-Azure vs. OCI-AWS
Layer | OCI-Azure | OCI-AWS |
Primary Interface | Azure Portal (Native experience) | OCI Console (Integrated with AWS) |
Identity | Microsoft Entra ID (Native) | OCI IAM is mapped to AWS IAM |
Network Logic | OCI-Azure Interconnect Bridge | OCI Resources inside AWS AZ |
Performance | Optimized for "near-local" speed | Optimized for "co-located" speed |
Egress Logic | No egress fees for Interconnect | First 10 TB free (OCI side) |
Conclusion: Why Oracle Database 26ai is the Foundation for the Next Decade of AI-Native Enterprises
Oracle Database 26ai represents a significant shift in how businesses use and implement AI. Rather than treating AI as an "add-on," 26ai incorporates intelligence directly into the database kernel, transforming AI into a native core function. The three main issues that contemporary businesses face are addressed by this fundamental strategy:
Eliminates Data Sprawl: By replacing fragmented silos with a single Converged Database, 26ai simultaneously handles relational, document, and vector data. Organizations can unify analytics, AI, and operational workloads without moving or duplicating data.
Operationalizes AI: In-database LLMs and Select AI Agents empower businesses to progress beyond basic chatbots. Enterprises can deploy autonomous systems capable of executing complex, multi-step tasks securely within the data tier, leveraging AI as an integral part of business operations.
Enables True Multicloud Portability: With deep, seamless integration across OCI, AWS, and Azure, 26ai provides a consistent architectural “north star,” allowing organizations to deploy, scale, and innovate in any cloud environment without compromising performance or security.
In essence, Oracle Database 26ai changes the enterprise's attention from developing AI infrastructure to creating business value by providing a unified, intelligent, and scalable platform. For enterprises that want to be fully AI-native, 26ai is more than simply a database; it is the operating system for the next decade of innovation.
