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                     WHAT IS 
ORACLE 
FUNCTIONS IN 
OCI?
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INTRODUCTION
 Oracle Functions in Oracle Cloud Infrastructure (OCI) is a 
serverless, event-driven compute service that lets you run code 
without provisioning.
 Managing servers It’s built on the open-source Fn Project, 
which makes it portable and easy to integrate with other cloud 
or on-premises environments.
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What is Oracle Functions?
 Oracle Functions is a serverless compute 
service provided by Oracle Cloud 
Infrastructure (OCI) that allows you to run 
code without having to manage servers or 
infrastructure. It's designed to execute small, 
single-purpose functions in response to 
events, HTTP requests, or on-demand.
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How It Works
Trigger the Function Deploy to OCI
 Manually via Fn CLI or REST API.  Build the function (turns code into 
 Automatically by OCI Events a Docker image).
Service (e.g., object uploaded,  Push the image to OCI Container 
instance stopped). Registry.
 Through an API Gateway (like a  Deploy the function to Oracle 
REST endpoint). Functions, which stores and 
 Scheduled with OCI's Resource manages it.
Scheduler or other services.
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Supported Languages
 Since Oracle Functions runs your code in Docker containers, any language can be used 
as long as:
 You can build a Docker image.
 The function listens for input via stdin and responds via stdout.
 This gives you full flexibility — want to use Rust, PHP, or .NET? Just package it properly in 
a container.
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Key Features
 Serverless & Fully Managed
o No need to provision, scale, or manage infrastructure.
o OCI handles everything behind the scenes: servers, patching, availability, etc.
o Focus purely on your code and logic.
 Based on Open Source Fn Project
o Uses the Fn Project, an open-source serverless platform.
o Portable: Functions can run locally, on-prem, or in other clouds.
o Developer-friendly CLI tools and local testing environment.
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Integration with OCI 
Services
One of the biggest strengths of Oracle Functions is its tight integration with other OCI 
services, making it easy to build event-driven, cloud-native applications.
Here's a rundown of how Oracle Functions integrates across the OCI ecosystem:
 OCI Events Service
   Trigger functions automatically when events occur in OCI.
 Examples:
 Object uploaded to Object Storage
 Compute instance created/stopped
 Database backup completed
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Security Features
Oracle Functions provides several built-in security features to ensure your serverless 
applications are secure, isolated, and compliant with best practices.
Here are the key security features of Oracle Functions:
  Isolation with Containers
 Each function runs in its own isolated Docker container, providing security at 
the runtime level.
 This isolation helps prevent unauthorized access between functions.
 Functions don’t share resources (e.g., memory, CPU) with other functions.
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Summary & Conclusion
 Oracle Functions is a serverless compute service on Oracle Cloud Infrastructure (OCI) 
that allows developers to build, deploy, and run event-driven applications without 
managing servers. It’s based on the Fn Project, which makes it portable and open-
source. Here’s a recap of its key features and benefits:
 Security Highlights:
o Isolation: Each function runs in an isolated Docker container, ensuring no resource 
sharing.
o IAM Integration: Fine-grained control over who can access and invoke your 
functions.
o Secrets Management: Integrates with OCI Vault for secure handling of credentials 
and secrets.
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