The best database for the digital era

IBM Db2® for z/OS is still the undisputed leader for storing and harnessing mission-critical data. It remains the “gold standard” for system availability, scalability, security and cost effectiveness. A majority of Fortune 500 companies, including the world’s top banks, retailers and insurance providers trust Db2 for z/OS for storing their data. Built on the core capabilities of Db2 11, Db2 12 provides businesses the capabilities needed to meet rapidly changing business demands:

  • Providing scale and speed for the next era of mobile and interconnected devices
  • Supporting cloud, analytics and mobile
  • Delivering faster analytical insights
  • Promoting in-memory database performance, while reducing costs


The foundation for business-critical analytics and machine learning

Db2 delivers real-time insights at the point of impact by bringing analytics to where the data and transactions originate. This reduces latency, complexity and costs, while improving data quality and governance. It also provides the proven reliability of IBM z Systems® — the highest levels of availability, scalability and performance — to support agile, integrated on-premises and cloud environments.

Db2 for z/OS is at the core of the mobile era

Mobile applications for business-critical activities continue to grow in number and importance. Securely connecting those mobile applications to enterprise data, while maintaining the agility and simplicity of development models, is critical. Db2 can now store JSON data, retaining development flexibility and simplicity while adding security, resiliency and consolidated system and operation management.

Availability, business resiliency and scalability

Clients choose Db2 for z/OS for its real-world-proven resiliency and security. Db2 for z/OS continues to raise the bar with capabilities for even higher availability and resiliency. With the explosion of data-scalability enhancements in Db2 for z/OS, it’s the right choice for large and growing databases.

Total cost of ownership — the heart of machine learning

When 80 percent of world’s corporate data resides or originates on the mainframe, Db2 for z/OS is at the core of machine learning. Offering up to 23 percent lower CPU cost because of advanced in-memory techniques, Db2 12 is the platform of choice.

Featured resource

Db2 12 for z/OS has arrived

Catch the wave early and stay ahead of the competition with faster analytics, scalability and speed for the mobile era. Achieve 20 percent or better CPU savings. Benefit from in-memory database performance and much more.

Db2 12 for z/OS


Db2 12 for z/OS

An enterprise database for mission-critical data, providing security-rich, seamless integration for analytics, mobile and cloud

IBM Db2 AI for z/OS

Empowers the optimizer to determine the best-performing query access paths, based on workload characteristics, using machine-learning technology

Db2 11 for z/OS

Leverages improved data-serving capabilities to drive down risk and reduce business costs

Db2 Query Management Facility

Increases exponentially your ability to distribute reporting information quickly throughout the enterprise through the IBM WebSphere® component of IBM QMF™ Enterprise Edition

Db2 Analytics Accelerator for z/OS

Combines IBM System z® quality of service and Netezza® technology to accelerate complex queries in a highly secure and available environment

IBM Machine Learning for z/OS

A machine-learning solution that infuses continuous intelligence throughout your enterprise

Db2 Tools for z/OS

Db2 database management tools that can help optimize management, maximize performance and lower operating costs

Db2 for z/OS Value Unit Edition

Deploys new application workloads on the System z platform

What's new

Continuous delivery of Db2 enhancements

You can benefit from new capabilities and enhancements sooner, without waiting for — and migrating to — full new-product releases.

One such continuously delivered enhancement is the LISTAGG built-in function. It improves productivity for developers and supports faster delivery of business-critical information — in the optimal format — to decision makers.

DevOps: Simplify the deployment of applications

With IBM UrbanCode® Deploy, you can easily automate the deployment and configuration of database schema changes in Db2 11 and 12. Reduce the time, costs and complexity of deploying and configuring your business-critical applications to achieve business value faster and more efficiently.

Modern language support for application development

Db2 11 and 12 support application development in many modern programming and scripting languages. Application developers can use languages such as Python, Perl and Ruby on Rails to write Db2 for z/OS applications.

Db2 RESTful services

The Db2 REST service provider, available in Db2 11 and 12, unleashes your enterprise data and applications on Db2 for z/OS for the API economy. Efficiently create consumable, scalable and RESTful services to more securely interact with business-critical data and transactions, without special Db2 for z/OS expertise.

Dynamic SQL plan stability

Make your dynamic SQL perform as efficiently as your static SQL, with the same level of access-path stability.


The latest version of IBM Db2 AI for z/OS

It offers intelligent SQL concurrency and Db2-generated, machine-learning models. See how IBM Db2 AI for z/OS maximizes operational performance while minimizing operational costs.

Db2 12 for z/OS — ebook overview

Learn how Db2 12 for z/OS addresses business and technological needs, and better understand the capabilities of Db2 12 pertinent to architects and IT professionals.

Db2 12 for z/OS — IBM Mobile tutorial

This book shares an overview of how Db2 12 and z/OS addresses business and technological needs and will also help architects and IT professionals understand the capabilities of Db2 12. 

Db2 12 technical overview

Join IBM Distinguished Engineer John Campbell for a technical overview of Db2 12 for z/OS that covers goals, highlights and performance enhancements in a two-part webcast.

Modern application development language support

Db2 for z/OS supports a wide variety of programming and scripting languages for developing applications. Programming applications for Db2 for z/OS are now more accessible than ever before.

Db2 for z/OS — RESTful API enabling the mobile economy

With the reliability and security of Db2 for z/OS and System z, enhance your web, mobile or cloud applications by using Db2 RESTful services to access Db2 data directly.

Product roadmap

Learn what's new and coming soon for IBM Data and AI products.