Oracle AI Database@Azure: Why It Matters and When to Use It

Oracle Database@Azure was announced by Oracle and Microsoft in September 2023. The picture shows the regions having oracle database@azure.

 We may wonder that we have option of running Oracle database in Azure VM or we can create interconnect (Fast connect + Express Route) between OCI and Azure and the applications in Azure can access the database in OCI, then what is benefit of choosing Oracle database@Azure model. We are going to discuss in detail in this article.

Oracle AI Database@Azure in simple terms, it is a jointly integrated Oracle and Microsoft offering that allows organizations to deploy Oracle database services inside Microsoft Azure data centers. The underlying database infrastructure remains based on Oracle Cloud Infrastructure technologies, but the infrastructure is physically located in Azure facilities. Applications running on services such as Azure Virtual Machines or Azure Kubernetes Service can therefore access Oracle databases through Azure networking rather than treating the database as a remote workload hosted in another public cloud. Unlike Oracle database in Azure VM where oracle is installed and managed manually in Azure environment, Oracle provides its database cloud services on Oracle infrastructure physically deployed inside Azure data centers and integrated with Azure. Some Important features of this model:

· Oracle database infrastructure is colocated in Azure data centers.
· Networking uses Azure Virtual Network.
· Azure identity and authorization mechanisms participate in service access.
· Database metrics, logs, events, and telemetry can be surfaced within Azure.
· Oracle operates and maintains the underlying Oracle infrastructure.
· Azure portal, APIs, SDKs, and Terraform can be used for many provisioning and management activities.

The above features make Oracle AI Database@Azure fundamentally different from installing Oracle Database software on a standard Azure VM.

In the Interconnect model, the connection between OCI and Azure is created and managed by users. But in the Oracle database@azure, the higher bandwidth connectivity is in-built.

	Oracle Database on Azure VM	Oracle AI Database@Azure	Oracle Database in OCI + Azure Interconnect
Oracle Database Location	Azure VM	On OCI database infrastructure colocated inside Azure datacenters	In an OCI region
Cloud model	Azure IaaS	Oracle DBaaS integrated into Azure	Azure + OCI
Infrastructure owner	Microsoft provides VM infrastructure	Oracle operates OCI database infrastructure inside Azure	Oracle operates OCI infrastructure in OCI
Patching	Customer handles OS/DB patching	Oracle handles infrastructure patching; DB patching varies by service	Oracle handles cloud infrastructure; DB patching varies by OCI service
Network	Native Azure networking	Private Azure-integrated connectivity	Azure ExpressRoute + OCI FastConnect
Latency between Azure app and DB	Azure-local	Very low latency; DB infrastructure colocated in Azure	Low latency, but traffic crosses Azur and OCI private interconnect
Cross-cloud network required	No	No traditional Azure-to-OCI interconnect needed for DB access	Yes
Exadata & Autonomous database	No	Yes	Yes, if using Exadata & Autonomous database in OCI
RAC availability	No	Available	Available with supported OCI database services.
Performance model	Depends on Azure VM + storage sizing	Oracle engineered infrastructure, especially Exadata	Oracle OCI database infrastructure
Billing	Azure compute/storage/network billing and Oracle database licensing separately	Purchased through Azure Marketplace and billing appear in Azure portal.	OCI DB billing + Azure services billing separately
Operational complexity	customer-managed	Lowest of the three for Azure centric Oracle DBaaS	Higher because two clouds, routing, identity and operations must be coordinated
Monitoring	Customer configures monitoring	Native Azure Monitor integration is supported	Requires integration, export & configuration across clouds
Best Fit	Lift-and-shift, Development and Testing, smaller/custom Oracle environments	Mission-critical Oracle workloads closely integrated with Azure	Existing OCI estate or workloads that need OCI services while applications stay in Azure

 Database@Azure becomes much more compelling when requirements have the below.

·       Mission critical Oracle Database: We will get fully managed Oracle hardware sitting right inside Azure data centers, giving us top tier speed and reliability without needing a hybrid setup.

·       Very high DB performance: The co-located hardware delivers low-latency, high-speed performance for demanding, data-heavy applications.

·       Exadata: Oracle database@azure provides Oracle Exadata Database Service to handle massive compute and storage demands effortlessly.

·       RAC: It is an Instance HA option. Oracle RAC distributes workloads across multiple server instances so the app stays online even if a server fails.

·       Data Guard: Oracle Data Guard keeps standby databases synced in real time to protect against outages and data loss.

·       Autonomous Database: Oracle Autonomous Database for handling routine work like provisioning, patching, scaling, and tuning automatically.

·       Oracle AI Database 26ai: The latest database version with AI features enabled which let us run vector searches and AI workloads directly alongside our existing enterprise data.

·       Azure applications + Oracle DB: Azure VMs, microservices on AKS and custom apps connect directly to Oracle databases over private, low-latency links.

·       Microsoft Fabric / AI integration: Integrate our Oracle data straight into Microsoft Fabric and Azure AI services for analytics and reporting.

·       Enterprise Oracle workload: Easily powers critical ERP, financial, and transactional systems right inside an Azure-based setup.

·       Low operational overhead: Oracle takes care of the underlying hardware and infrastructure management, freeing up our internal IT team.