Oracle cloud

Oracle Exadata Cloud at Customer – The Complete Guide

Oracle Exadata Cloud at Customer is:

  • Hybrid Cloud Solution: This solution combines Oracle Exadata’s high-performance features with the flexibility of cloud deployment in your data center.
  • Performance: Delivers enhanced database performance and efficiency.
  • Security: Offers robust security features for data protection.
  • Scalability: Easily scalable to meet growing business needs.
  • Integration: Seamlessly integrates with Oracle Cloud services for a unified cloud experience.

Read our 10-step plan for how to migrate to Oracle Cloud at customer solutions.

Key Insights:

  • Technical Architecture: ExaC@C consists of Oracle Exadata Database Servers and Storage Servers, interconnected via a high-speed, low-latency RDMA fabric network. Currently, Gen2 is the latest platform.
  • Licensing Options: ExaC@C provides flexible licensing options, including a complete package or using your existing Oracle Database software licenses.
  • Supported Database Editions and Versions: ExaC@C supports various Oracle Database software releases, including Oracle Database 19c, 12c Release 1 and 2, and 11g Release 2.
  • Pros and Cons: ExaC@C offers benefits such as colocation and reduced capital expenditure but also comes with challenges like a minimum four-year contract commitment and potential scalability issues.

Oracle Exadata Cloud at Customer: A Detailed Exploration

Oracle Exadata Cloud at Customer, known to the tech-savvy as ExaC@C, is a unique offering in database services.

It’s part of the more extensive Oracle Cloud Infrastructure, providing autonomous and co-managed Oracle Database solutions.

The essence of this service lies in its perfect blend of customer control and Oracle management.

Oracle Cloud at Customer - What is it?

What’s in the Exadata C@C Box?

When you delve into Oracle Exadata Cloud at Customer, you uncover a treasure trove of features:

  • Integrated system: ExaC@C integrates the prowess of Oracle Exadata and Oracle Cloud Infrastructure. It brings this stellar combination right into your data center while Oracle retains the responsibility of managing the Exadata infrastructure.
  • Performance and scalability: You get full access to Oracle Database features and the remarkable performance and scalability of Oracle Exadata.
  • Manageable through Oracle Cloud Infrastructure console: The management of ExaC@C is akin to other cloud resources. You can use Oracle Cloud Infrastructure’s console and APIs, maintaining total sovereignty over your data.

Breaking Down the Exadata Technical Architecture

Breaking Down the Exadata Technical Architecture

Delving deeper into the technical architecture of ExaC@C, it is constituted of several interconnected components:

  • Oracle Exadata Database Servers and Storage Servers are interconnected via a high-speed, low-latency RDMA fabric network and intelligent Oracle Exadata software.
  • Virtual Machine Technology: This separates the customer-managed and Oracle-managed components on each database server. While you have root privileges for the Exadata database server VMs, Oracle administers the physical database server hardware.
  • Oracle Exadata Storage Servers: These servers handle database storage and are allocated to disk groups managed by Oracle Automatic Storage Management (Oracle ASM). You have full admin access to Oracle ASM disk groups, while Oracle manages the Exadata Storage Server hardware and software.

Additional Infrastructure Components Managed by Oracle

In addition to the database server hardware and Exadata Storage Servers, Oracle manages other infrastructure components of ExaC@C.

This includes network switches, power distribution units (PDUs), and integrated lights-out management (ILOM) interfaces.

What is Oracle Exadata?

What is Oracle Exadata2

Oracle Exadata is a database machine, an integrated system designed by Oracle Corporation. It is primarily intended to host Oracle Database and aims to deliver optimized performance, scalability, and reliability compared to traditional database deployment methods.

It’s worth noting that Oracle Exadata is not a standalone database. Instead, it’s a combination of hardware and software that works in unison to enhance the capabilities of the Oracle Database.

It includes a blend of servers, storage, networking, and software, all optimized to work together seamlessly.

While Oracle Exadata is widely recognized for its high performance and efficiency, it’s essential to understand that these benefits depend on various factors, including specific workloads, configurations, and management practices.

Like any technological solution, its effectiveness ultimately hinges on its alignment with the specific needs and context of the organization using it.

Licensing Options for Oracle Exadata Cloud at Customer

Licensing Options for Oracle Exadata Cloud at Customer

When licensing Oracle Exadata Cloud at Customer, you’re offered flexibility that suits your organization’s unique needs.

Here’s a snapshot of the options available:

  • Complete Package: A full subscription to ExaC@C includes all necessary Oracle Database software licenses.
  • Bring Your Licenses: Alternatively, you can utilize Oracle Database software licenses you already own.

You can access an all-inclusive package by incorporating Oracle Database software licenses into your ExaC@C subscription. This comprehensive bundle includes the following:

  • All features of Oracle Database Enterprise Edition
  • All database enterprise management packs
  • All Enterprise Edition options, such as Oracle Database In-Memory and Oracle Real Application Clusters (Oracle RAC)

In addition, ExaC@C comes equipped with cloud-specific software tools to aid you in administrative tasks. Whether you’re backing up, recovering, or patching, these tools make the process easy.

Oracle Exadata Cloud at Customer: Supported Database Editions and Versions

Oracle Exadata Cloud at Customer: Supported Database Editions and Versions

Oracle Exadata Cloud at Customer (ExaC@C) offers a seamless bridge between Oracle’s cloud and on-premises environments.

It enables users to leverage the full power of Oracle Exadata in their own data centers while benefiting from the agility and scalability of cloud services.

Fully Supported Versions

  • Oracle Database 19c (19.x): Oracle Database 19c represents the latest long-term support release. It is fully supported on ExaC@C and offers users the most updated features, security patches, and enhancements for Oracle databases. This version is recommended for users seeking the most robust and future-proof database solution within their ExaC@C environment.

Selectively Available Options

  • Oracle Database 12c Release 2 ( This version is available for ExaC@C but is designated as supported for approved customers only. It implies that access to this version may require specific eligibility criteria or approval from Oracle, making it a selectively available option for users with particular needs that align with the features and capabilities of 12c Release 2.

Supported with Specific Conditions

  • Oracle Database 12c Release 1 ( While this version is supported on ExaC@C, users must consider an important caveat. If you intend to create a new database or update an existing database with a Release Update (RU) later than July 2022, you must have a valid Market Driven Support (MDS) contract. This requirement ensures that users receive the necessary support and updates for their database beyond the standard support timeline.
  • Oracle Database 11g Release 2 ( Similar to, version is supported on ExaC@C with a condition related to updates. A valid MDS contract is required to create or update an database with a Patch Set Update (PSU) no later than April 2021. This stipulation allows users of older database versions to maintain compliance and support through Oracle’s Market Driven Support framework.

Key Considerations for ExaC@C Database Support

  • Future-Proofing: Organizations should aim to use the most current supported Oracle Database version to benefit from the latest features and security enhancements.
  • Compliance and Support: Understanding each version’s specific support requirements and conditions is crucial, especially for organizations using older versions that may require an MDS contract for continued support and updates.
  • Approval Process: For versions supported for approved customers only, engage with Oracle representatives early to understand the approval process and ensure compatibility with your ExaC@C deployment.

Oracle Exadata Cloud at Customer offers a flexible and powerful platform for running Oracle Databases on-premises with cloud-like capabilities.

By carefully selecting and managing your Oracle Database versions by Oracle’s support policies, you can maximize the value and performance of your ExaC@C deployment.

Comparison Between Oracle Exadata and Exadata Cloud at Customer

Comparison Between Oracle Exadata and Exadata Cloud at Customer

Oracle Exadata and Exadata Cloud at Customer (ExaC@C) represent two of Oracle’s premier solutions for running Oracle Database workloads.

While both platforms are built on the high-performance Exadata infrastructure, they cater to distinct operational models and customer needs.

Below is a detailed comparison of hardware differences, licensing models, and deployment scenarios.

Hardware Configuration

  • Oracle Exadata: A hardware and software platform designed to run Oracle Database workloads with optimal performance. The hardware is engineered to enhance database speed and reliability, featuring high-performance storage servers, network equipment, and scalable compute nodes. Customers purchase or lease this hardware for on-premises deployment, maintaining full control over the physical infrastructure.
  • Exadata Cloud at Customer (ExaC@C): While ExaC@C leverages the same high-performance hardware as traditional Exadata, the key difference lies in the management and operational model. With ExaC@C, Oracle deploys its Exadata hardware in the customer’s data center but manages it remotely, offering a cloud-like experience on-premises. This arrangement allows for tighter integration with Oracle Cloud services and management tools.

Licensing and Cloud Services

  • Oracle Exadata: Traditionally, Exadata is acquired through hardware purchase or lease and a separate Oracle Database software license. This model provides flexibility in software licensing, where customers can utilize existing Oracle Database licenses or purchase new ones as needed. The emphasis here is on the license-only approach, where the customer is responsible for the software’s installation, configuration, and management of the Exadata hardware.
  • Exadata Cloud at Customer (ExaC@C): ExaC@C introduces a more integrated approach to licensing and services. Customers can include Oracle Cloud services as part of their subscription, effectively bundling the hardware, software, and cloud services into a single package. This model offers two key benefits: the inclusion of Oracle Database software licenses as part of the cloud service subscription and the ability to apply existing on-premises Oracle Database licenses to the ExaC@C environment (Bring Your Own License – BYOL). This flexibility allows organizations to leverage cloud economics while complying with Oracle’s licensing policies.

Operational and Management Differences

  • Oracle Exadata: Customers who opt for Exadata manage and maintain the hardware and software stack. While this offers maximum control over the database environment, it requires significant in-house expertise and resources to optimize the platform’s performance and security.
  • Exadata Cloud at Customer (ExaC@C): ExaC@C shifts the operational burden to Oracle. Oracle manages the infrastructure, including hardware, software patches, and updates, directly mirroring the management model of Oracle’s public cloud services. This approach significantly reduces the management overhead for customers, allowing them to focus on strategic initiatives rather than day-to-day operational tasks.


The choice between Oracle Exadata and Exadata Cloud at Customer hinges on an organization’s specific needs for control, operational flexibility, and integration with cloud services.

Traditional Exadata offers a high-performance database platform with the flexibility of self-management and licensing.

In contrast, ExaC@C provides a cloud-managed experience in the customer’s data center, combining the benefits of Oracle’s cloud services with the option to utilize existing licenses or acquire new ones under a cloud service model.

Both platforms leverage Oracle’s advanced Exadata hardware but cater to different operational models and customer preferences regarding infrastructure management and cloud integration.

Exadata Cloud at Customer: Pros and Cons

Exadata Cloud at Customer Pros and Cons

Oracle’s Exadata Cloud at Customer (ExaCC) brings the power of Exadata into your data center. With this solution, Oracle deploys and manages the infrastructure, including monitoring, patching, and troubleshooting, right on your premises. 

This setup provides access to Oracle Cloud service offerings with the underlying infrastructure running on Exadata on-site.

To further understand the potential advantages and drawbacks of ExaCC, let’s break them down:

Colocation: ExaCC meets business requirements that mandate data to reside on a company’s premises, catering to needs for low latency connections or regulatory requirements.Lock-in: Customers must commit to a minimum four-year contract with Oracle to provide on-site hardware.
Autonomous Database: Oracle’s Autonomous database, a service offered on Oracle Cloud, can be deployed using ExaCC.Colocation: ExaCC meets business requirements that mandate data reside on a company’s premises, catering to needs for low-latency connections or regulatory requirements.
Reduced Capital Expenditure: Since Oracle owns the Exadata systems with ExaCC, the customer pays a subscription for the service used, potentially reducing costs compared to owning and managing Exadata on-site.Availability: While on-premises Exadata systems have built-in redundancy, they cannot match the high availability of Exadata systems deployed on Oracle’s public cloud.
Service Encapsulation: Oracle remotely patches hardware components in a rolling fashion, preserving service availability throughout the updating process.Costing Strategy: Customers pay a fixed monthly payment for Exadata infrastructure usage, plus payments for hourly OCPU consumption, which might result in a larger bill compared to an ExaCS deployment.

FAQs on Exadata Cloud at Customer

What is Oracle Exadata cloud at customer?

Oracle Exadata Cloud at Customer, also known as ExaCC, is a service provided by Oracle that brings together the power of Exadata with the flexibility of the cloud. It enables you to leverage Oracle Cloud Infrastructure services within your data center, ensuring you maintain complete control over your data.

Which database versions are supported by Exadata cloud at customer?

Exadata Cloud at Customer supports various Oracle Database software releases, including Oracle Database 19c, Oracle Database 12c Release 1 and 2 (for approved customers only), and Oracle Database 11g Release 2 (with certain contract requirements).

When customers are using the Exadata cloud service, what are they responsible for?

Customers are responsible for managing their databases, including Oracle Database, Oracle Grid Infrastructure, and Oracle Exadata system software. They also have administrative access to Oracle Automatic Storage Management (Oracle ASM) disk groups. However, they do not have administrative access to the physical server hardware, which Oracle administers.

Which security measure is implemented out of the box Exadata cloud at customer?

Exadata Cloud at Customer implements various security measures out of the box. It uses virtual machine technology to separate customer-managed and Oracle-managed components on each database server, ensuring a robust security infrastructure. Additionally, Oracle administers the Exadata hardware, adding an extra layer of security.

What is the benefit of Oracle Cloud at customer?

Oracle Cloud at Customer allows organizations to reap the benefits of Oracle Cloud Infrastructure while maintaining data sovereignty in their own data center. This satisfies regulatory compliance needs and enables low-latency connections between applications and databases.

What is the difference between Oracle and Exadata?

Oracle is a multinational corporation that offers a variety of software and hardware solutions, while Exadata is a specific product created by Oracle. Exadata is a database machine designed to provide superior performance and efficiency when running Oracle Database.

How many VMs are in Exadata?

The number of VMs in an Exadata system can vary based on the configuration and the customer’s requirements. Each Exadata system contains Oracle Exadata Database Servers and Oracle Exadata Storage Servers, which can host multiple VMs

Is Oracle Exadata also available in the public cloud?

Yes, Oracle Exadata is available on the cloud. Oracle offers services like Exadata Cloud Service and Exadata Cloud at Customer, allowing users to leverage the power of Exadata in a cloud environment. These services provide the same features of on-premises Exadata but with the added flexibility and scalability of the cloud.

What are the costs involved?

You need to pay for the hardware for four years (fixed). The HW costs are approximately 100k $ for a quarter rack. The Universal Cloud Credits will be the high cost, and that is based on your annual commitment and assumed consumption.

If we are an existing Oracle customer, how to manage the support?

You can plan the migration before your support renewal is due. Oracle is often willing to offer a 6-month renewal instead of a 12-month renewal.

What are the major challenges with Oracle cloud at customer?

The major challenge is Oracle. Let them assess how much cloud space you will need and what type of server you will need. In every scenario we encounter, they always oversize and overcommit. You need an independent consultant to assess and help you with the right solution. I highly recommend that you read our blueprint guide.

What is the cost Oracle Exadata Cloud at Customer?

It depends on what type of hardware you need (starting from 100k $ a year) upwards. Software (cloud) services usually cost 2x the cost of the hardware. To avoid overpaying, you need to follow our recommendations.

Which are the main competitors to Oracle Cloud at Customer?

There is no competitor in our eyes, as no competitor can allow you to run Oracle cloud services except this solution. The competition maybe if you want to run non-Oracle workloads.

Which Industries can benefit of Oracle Cloud at Customer

Any Industry can benefit; so far, we see Telco, Finance, and other industries where regulation prevents Public Cloud migration, as well as Retail, Automotive, Manufacturing, Healthcare, and E-commerce. Much depends on your specific requirements.

How Can Redress Compliance Help

Oracle Exadata Cloud at Customer Migration and Implementation:

  1. Assessment & Planning: Our team starts by comprehensively analyzing your current infrastructure, database systems, and business requirements to create a detailed roadmap for migrating to Oracle Exadata Cloud at Customer.
  2. Design & Architecture: We design a robust, scalable, and secure Exadata Cloud at Customer architecture tailored to your business needs, ensuring optimal performance and efficiency.
  3. Database Migration: We handle the seamless migration of your existing databases to the new Exadata Cloud in the customer environment, minimizing downtime and ensuring data integrity.
  4. Infrastructure Setup: Our experts set up the necessary infrastructure within your data center for Oracle Exadata Cloud at Customer, including network configuration, storage setup, and compute resources.
  5. System Configuration: To optimize performance, we configure your Oracle Exadata Cloud in the customer system, including Oracle Exadata Database Servers and Oracle Exadata Storage Servers.
  6. Security Implementation: We implement stringent security measures, including virtual machine (VM) technology, to separate customer-managed and Oracle-managed components, ensuring your data remains secure at all times.
  7. Performance Tuning: We fine-tune your Oracle Exadata Cloud in the customer system for optimal performance, leveraging Exadata’s intelligent performance features.
  8. Testing: We perform extensive testing to validate that all migrated databases and applications work correctly in the new environment and are fully optimized.
  9. Training: Our team provides hands-on training to your IT staff on managing and maintaining your new Oracle Exadata Cloud at Customer system, empowering them to handle day-to-day operations efficiently.
  10. Ongoing Support: We offer ongoing technical support after the migration, ensuring your Oracle Exadata Cloud at Customer system operates smoothly and efficiently.

Expert advice on Oracle Exadata Cloud at Customer.

Oracle Cloud at Customer - Expert Advice


  • Fredrik Filipsson

    Fredrik Filipsson brings two decades of Oracle license management experience, including a nine-year tenure at Oracle and 11 years in Oracle license consulting. His expertise extends across leading IT corporations like IBM, enriching his profile with a broad spectrum of software and cloud projects. Filipsson's proficiency encompasses IBM, SAP, Microsoft, and Salesforce platforms, alongside significant involvement in Microsoft Copilot and AI initiatives, improving organizational efficiency.

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