IBM Db2 Database vs IBM Informix vs Oracle Database comparison

IBM Db2 Database and IBM Informix are both solutions in the Relational Databases Tools category. IBM Db2 Database is ranked #7 with an average rating of 8.2, while IBM Informix is ranked #25 with an average rating of 4.0. IBM Db2 Database holds a 6.6% mindshare in SQL, compared to IBM Informix’s 1.8% mindshare. Additionally, 90% of IBM Db2 Database users are willing to recommend the solution, compared to 85% of IBM Informix users who would recommend it.

IBM Db2 Database

Read 76 IBM Db2 Database reviews

6,703 Views
6,502 Comparison Views

90% willing to recommend

IBM Informix

Read 17 IBM Informix reviews

2,035 Views
1,893 Comparison Views

85% willing to recommend

Oracle Database

Read 293 Oracle Database reviews

15,675 Views
14,578 Comparison Views

92% willing to recommend

IBM Db2 Database

IBM Informix

Oracle Database

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Executive Summary

We performed a comparison between IBM Db2 Database, IBM Informix, and Oracle Database based on real PeerSpot user reviews.

Find out what your peers are saying about Microsoft, Oracle, SAP and others in Relational Databases Tools.

To learn more, read our detailed Relational Databases Tools Report (Updated: May 2026).

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Relational Databases Tools

May 2026

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Review summaries and opinions

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:

Mindshare comparison

As of June 2026, in the Relational Databases Tools category, the mindshare of IBM Db2 Database is 6.6%, down from 7.1% compared to the previous year. The mindshare of IBM Informix is 1.8%, up from 1.8% compared to the previous year. The mindshare of Oracle Database is 10.5%, down from 12.5% compared to the previous year. It is calculated based on PeerSpot user engagement data.

Relational Databases Tools Mindshare Distribution
Product	Mindshare (%)
Oracle Database	10.5%
IBM Db2 Database	6.6%
IBM Informix	1.8%
Other	81.1%

Relational Databases Tools

Featured Reviews

Sathyan K

Founder, Director at perfTech Solutions Pvt Ltd

Database has secured high-volume transactions and supports fast, compliant workflow processing

Sterling B2B Integrator is a highly transactional-oriented application, which can be described as an OLTP application. Any data that flows through the application is stored in the database for each step that it performs. IBM Db2 Database helps the application work much faster from an OLTP perspective. IBM Db2 Database is SSL enabled, which means that from the security point of view, any access to the database is through SSL. Additionally, all compliance-related aspects have been taken care of from the database point of view, including database encryption and security-related features. It is highly scalable, and its performance related to database pruning is very good. It can be scaled vertically or horizontally so that data insertions and data access are much faster and more secure compared to how Oracle or other databases work.

Read full review

Nasir Niamat

DB Consultant at i2c

Has offered a cost-effective option despite frequent technical issues and limited market demand

We find some bugs in IBM Informix. Maybe we are using it more aggressively than others. Every month or every second month, we find some bugs in it, which is not ideal. It should be rare, not this frequent. The good thing is they cover those bugs in the next release within weeks or days on demand. IBM Informix should become hybrid and should include AI features similar to other DBMS systems such as Snowflake, Redshift, and DataBricks. This would help its value rise with the market.

Read full review

Muhammad Usman Muzaffar

Senior Vice President IT Operations at ZTBL

Running secure internal banking applications has been reliable and supports fast deployments

I am still working with Oracle products. I am still using Enterprise Manager 14c. I am using Oracle Database, Oracle ExaCC, Oracle EBS, Oracle WebLogic, Oracle Enterprise Manager, and Oracle Linux. I can answer questions about my experience with WebLogic Suite. I use it in my company. I have not used WebLogic's diagnostic tools. I do not utilize its lifecycle management features. I do not have much experience with WebLogic Java EE support, as I just deploy the application and the other team utilizes this server. I am not directly involved in WebLogic. I have been using Oracle Linux myself. The deployment is local, on-premises. I have been working with Enterprise Manager as well. All the components of Oracle I am using are on-premises. I use Oracle 19c database, Oracle ExaCC, Exadata on Cloud at Customer. I have been using Oracle Linux, Enterprise Manager, and databases as well. I have been working with Oracle Database for about 20 years. My experience has been 100% positive with Oracle Database. I have utilized its Real Application Clusters along with Data Guard. I do not use Oracle's Advanced Analytics and machine learning features right now. I have given this review an overall rating of 9 out of 10.

Read full review

Quotes from Members

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:

Pros

"In summary, this is a good solution and one that I recommend."

"The solution has many beneficial features, such as security, support, and stability."

"Its robustness, scalability, availability, and performance are valuable. All these are the major attributes of a relational database for supporting a very high-volume business, and Db2 is very good in all those areas and in all those attributes."

"Data structure -- easy access batch or interface."

"The most valuable aspect of this solution is its stability. We have never had any problems and have never had to contact technical support."

"The solution is a very stable relational database and has integration with legacy systems. It is a great product."

"It has a good, stable performance, and it's not Oracle."

"IBM Db2 was much cheaper as a package than using other products. This is because IBM supplied a package with its product. It's an application. So it was much more efficient and a stronger competitor in that regard."

More IBM Db2 Database pros

"Every version is faster than the previous."

"The initial setup is pretty easy."

"It supports multiple applications and business intelligence tools."

"IBM Informix benefits users with high availability and good integration capabilities."

"The solution is quite stable and reliable; we use it mainly due to its general stable nature."

"The scalability is very good."

"Not looking at Informix would really mean a shot in your own leg before walking a long distance."

"The most valuable feature is concurrency and locking because my customers usually use databases in OLTP mode. So, for a large number of competitive users. Other features that are well valued are quick large-scale data types. It is better than Oracle."

More IBM Informix pros

"Power of Oracle combined with robust Unix platforms like Linux or AIX makes it powerful and secure as compared to MS SQL on Windows."

"We are fine with the performance and everything they offer."

"Oracle Database is the most widely accepted database, and it has built-in technical and security capabilities. It supports the new object in the database. The performance and security are very good, and it is user-friendly. There are a lot of people trained to use this solution which makes it simple to find assistance."

"There is no other database that supports us like Oracle."

"The backup system is good; we back up all our key marketing data, and the integration is a good aspect of Oracle."

"The initial setup isn't too difficult."

"It stores a lot of data in a short time."

"Oracle RDBMS has a lot of features and is extremely stable, but all this come with a price, and in this case a big one."

More Oracle Database pros

Cons

"The problem with this environment is that any software that you install is very costly because there are no free tools for this environment."

"Db2 interface could be improved a bit. Comparing it to Oracle, Db2's interfaces could be improved."

"Applications are used within the boundaries of their functionality and/or business purposes. While there are different situations that may occur either on a daily basis or once in a while, solutions are limited to the scope of their usage."

"They could enhance the product's cloud integration and general-purpose database capabilities."

"In other countries, different to US or Canada, the support is not straightforward."

"It might be slightly slower than other database vendors, but it works well since banks typically do not move quickly with leading-edge technology."

"Not very solid compared to its competitors' products."

"IBM Db2 Database could improve the user-defined functions. There are some user-defined functions that are missing, such as the spring functions. I used to have Teradata for my projects and I was used to working in the environment. They had a good set of user-defined functions."

More IBM Db2 Database cons

"For me, it's always too expensive. The problem is that Informix sometimes competes with free products, so yes, it's very expensive, but when we're talking about licensed products like SQL Server or anything, the midsize pricing could be significantly improved."

"There should be more intelligence surrounding discovering data to be able to automatically create indexes."

"I really would love to have a QT plugin."

"This product could be made easier to use for beginners."

"In my opinion, the packages could be improved. The version I use doesn't allow for packages. I can do some general procedures, but no packages like in Oracle. So, develop separate modules in SQL language. This would be most beneficial for me."

"The support team could include local engineers to establish efficient communication. It will help us speed up the escalation process."

"The solution should offer replication. It would be helpful if the solution would allow us to access third-party tools."

"Every month or every second month, we find some bugs in it, which is not ideal."

More IBM Informix cons

"The additional options are expensive. If you want to buy a rack, partitioning, diagnostics, or tuning, those options are expensive, but it is difficult to say if it is a negative or not."

"Problems can arise if there are too many requirements or a lot of details which must be applied to connect the software to the database."

"Customers are concerned about the license policy, especially in virtualization in combination with VMware."

"The main issue where I feel that Oracle still has a problem is with the licensing."

"It needs to be more stable, as recently we have experienced some issues."

"My reason for not recommending it to others is because of their bad license policy and how they've treated their customers badly, in the past."

"The high price of the product is an area of concern where improvements are required."

"The pricing of the product could be better. It's too expensive right now. They need to bring down the cost."

More Oracle Database cons

Pricing and Cost Advice

"There is a license for this solution and we pay every three years."

"I think that everyone knows that with IBM the standard price is higher than the others."

"They are competitive and honest (compared to how peer firms approach licensing conversations). "

"It is expensive when compared to other products."

"I rate the price of the IBM Db2 Database an eight out of ten."

"It's very expensive."

"Licensing fees are on a yearly basis."

"We normally handle large size businesses and as far as I am aware, the license is negotiable based on the number of users and the quantitative data."

More IBM Db2 Database pricing and cost advice

"For me, it's always too expensive."

"The free edition can be enough to handle moderate-size implementations, but you may want a pay for edition to benefit from more functionality, such as replication."

"The product has reasonable pricing. We purchase its yearly license."

"I am not aware of the licensing costs or terms."

"The main issue where I feel that Oracle still has a problem is with the licensing. Licensing is still expensive and the reason why today most startups use other, cheaper databases. Those other databases are much less sophisticated than Oracle."

"The tool's pricing is high and yearly."

"The licensing costs are on a yearly basis."

"It is quite expensive."

"My company has opted for perpetual licensing. We only need to make payments toward the licensing of the product."

"Definitely, it's an expensive product."

"The product is costly."

"We pay for an annual license as well as monthly support."

More Oracle Database pricing and cost advice

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Top Industries

By visitors reading reviews

Financial Services Firm

19%

Manufacturing Company

Government

Construction Company

11%

Comms Service Provider

Financial Services Firm

Manufacturing Company

Financial Services Firm

13%

Construction Company

12%

Manufacturing Company

Comms Service Provider

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

By reviewers
Company Size	Count
Small Business	21
Midsize Enterprise	13
Large Enterprise	48

By reviewers
Company Size	Count
Small Business	9
Midsize Enterprise	2
Large Enterprise	8

By reviewers
Company Size	Count
Small Business	87
Midsize Enterprise	66
Large Enterprise	179

Questions from the Community

What is your experience regarding pricing and costs for IBM Db2 Database?

IBM Db2 is an expensive solution. While I am not heavily involved with pricing, additional companies provide capabili...

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What needs improvement with IBM Db2 Database?

A potential area of improvement is better documentation. From an educational perspective, it is difficult for people ...

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What is your primary use case for IBM Db2 Database?

We use IBM Db2 Database for B2B Integrator, specifically Sterling B2B Integrator, which requires a database to store ...

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What is your experience regarding pricing and costs for IBM Informix?

There is a cost reason to move from IBM Informix. It is relatively cheaper than Oracle. The second reason is that mov...

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What needs improvement with IBM Informix?

We find some bugs in IBM Informix. Maybe we are using it more aggressively than others. Every month or every second m...

See all answers

What is your primary use case for IBM Informix?

We are using IBM Informix for OLTP systems. We are using IBM Informix although it is a technology that is not very po...

See all answers

How do you run Oracle Database at your organization and why?

My company has been using Oracle Exadata Database Service for some years now, and we are happy with it. I will allow ...

See all answers

Do you know of any disadvantages of Oracle Database?

Undoubtedly, Oracle Database is a top product in its category. But it does have its disadvantages, and for me and my ...

See all answers

What is the best use for Oracle Database?

Oracle Database is flexible and can be used for many things. My company's main use case for this product is for stori...

See all answers

Comparisons

SQL Server vs IBM Db2 Database

Compared 40% of the time

MySQL vs IBM Db2 Database

Compared 6% of the time

SAP HANA vs IBM Db2 Database

Compared 6% of the time

Teradata vs IBM Db2 Database

Compared 5% of the time

Amazon Aurora vs IBM Db2 Database

Compared 2% of the time

More IBM Db2 Database Competitors

SQL Server vs IBM Informix

Compared 20% of the time

Actian Ingres vs IBM Informix

Compared 9% of the time

SAP HANA vs IBM Informix

Compared 7% of the time

Oracle Database In-Memory vs IBM Informix

Compared 7% of the time

MySQL vs IBM Informix

Compared 5% of the time

More IBM Informix Competitors

SAP HANA vs Oracle Database

Compared 20% of the time

SQL Server vs Oracle Database

Compared 9% of the time

Teradata vs Oracle Database

Compared 6% of the time

MySQL vs Oracle Database

Compared 6% of the time

Tibero vs Oracle Database

Compared 3% of the time

More Oracle Database Competitors

Product Reports

Buyer's Guide

IBM Db2 Database

June 2026

Download IBM Db2 Database product report

Buyer's Guide

IBM Informix

June 2026

Download IBM Informix product report

Buyer's Guide

Oracle Database

May 2026

Download Oracle Database product report

Also Known As

DB2

Informix

Oracle 12c, RDBMS

Overview

IBM Db2 Database provides a robust SQL dialect, multi-platform support, self-tuning memory, and strong security. Its capabilities in handling structured and unstructured data while offering high uptime make it reliable for diverse applications.

IBM Db2 Database is known for its robust performance, seamless integration, and effective data replication. It supports diverse environments and applications, leveraging its advanced features like automatic storage, data compression, and efficient resource management. Despite its strengths, complexities in learning, costly licensing, and a need for better interfaces and advanced analytics support are noted. It requires improvements in AI features, management simplification, and cloud compatibility to effectively address the dynamic needs of businesses.

What are the important features of IBM Db2 Database?

Powerful SQL Dialect: Offers extensive SQL capabilities for varied database tasks.
Multi-platform Support: Compatible with different operating systems for flexible deployment.
Self-tuning Memory: Automatically optimizes memory usage for improved performance.
High Availability: Ensures continuous service with minimal downtime.
Strong Security: Provides advanced security measures for data protection.

What benefits should users consider when evaluating IBM Db2 Database?

Ease of Use: Simplifies database management and operation.
Autonomic Features: Automatically performs optimization and recovery tasks.
Robust Performance: Maintains high efficiency in data processing and management.
Seamless Integration: Easily integrates with existing systems and applications.
Effective Data Replication: Ensures data consistency and reliability across platforms.

Organizations leverage IBM Db2 Database in financial and banking applications, including core banking systems, card management, and transaction management. It also serves as a data warehouse supporting ERP systems, e-commerce projects, and data integration. Its robustness is utilized in mainframe environments across sectors like entertainment, retail, and public cloud deployments.

IBM

IBM Informix is renowned for its high performance and reliability, especially optimized for OLTP settings. Supporting large data volumes with scalability and advanced data management features, Informix efficiently integrates SQL and NoSQL capabilities within hybrid environments.

IBM Informix provides comprehensive capabilities tailored for robust database management and industry applications. Designed for handling concurrent data processing, its advanced replication, data compression, and seamless scalability are key highlights. Despite facing challenges such as less replication enhancement and SQL compatibility, Informix remains crucial for sectors like healthcare, banking, and government, integrating effectively with Unix-based systems. While some users seek improved AI features, enhanced tools, and simpler administration, Informix stands as a reliable choice for demanding data tasks.

What are the main features of IBM Informix?

Advanced Data Replication: Facilitates efficient data management across different environments.
Scalability: Offers both horizontal and vertical scaling for handling growth and complexity.
Data Compression: Reduces storage needs, saving resources while enhancing performance.
Hybrid Data Capabilities: Allows integration of SQL and NoSQL for varied data needs.

What benefits should users expect from IBM Informix?

High Performance: Optimized for OLTP, ensuring quick data transactions and processing.
Reliability: Stable performance even under demanding conditions, maintaining data integrity.
Cost Efficiency: Handles large data volumes with minimal resources, reducing overall costs.
Ease of Management: Simplifies complex database scenarios, enhancing operational efficiency.

IBM Informix plays a central role in sectors such as healthcare, banking, telecommunications, and government by supporting crucial operations through data processing, replication, and backup tasks. Its ability to integrate into Unix-based systems makes it widely adopted for applications, analytics, and real-time industry needs, especially in organizations focusing on OLTP systems.

IBM

Oracle Database is renowned for its reliability, scalability, and performance, delivering high availability and security. It integrates seamlessly with other systems, providing exceptional data protection and backup, suitable for managing multiple applications and supporting large datasets.

Oracle Database offers a powerful platform for managing data across industries such as finance, manufacturing, and agriculture. It is particularly beneficial for ERP systems, data warehouses, and transactional processing. Users can harness advanced security measures, automation, and integration capabilities, though high pricing and complex licensing can deter smaller enterprises. The database's flexible yet intricate setup process requires advanced skills, while limited integration with other databases and cloud platforms can be a drawback. User interface improvements, along with enhancements in query optimization and support services, are areas for potential development.

What are Oracle Database's key features?

Reliability and Scalability: Delivers consistent performance and can handle increasing workloads.
High Availability: Features like Data Guard ensure database uptime and disaster recovery.
Advanced Security: Protects sensitive data with robust security measures.
Seamless Integration: Works well with existing systems and applications.
Data Management: Supports large datasets and complex computations for varied applications.

What benefits can users expect?

Security: Offers comprehensive data protection mechanisms.
Scalability: Easily adapts to changing data processing needs.
Performance: Provides strong transactional and analytical processing capabilities.
Flexibility: Supports diverse applications, from CRM to e-commerce.
Disaster Recovery: Ensures continuity with reliable backup solutions.

Industries like finance, manufacturing, and agriculture utilize Oracle Database for its ability to handle extensive transactions and data analyses. It's essential for ERP systems, supporting CRM, e-commerce, and healthcare applications with its robust infrastructure and disaster recovery options. Despite its challenges in pricing and complexity, it remains a top choice for organizations requiring reliable and high-performing databases.

Oracle

Sample Customers

Knorr-Bremse, Mizuho Bank Ltd., Australian Government Department of Defence, SCHWENK Zement, Friedhelm Loh Group, YAZAKI Europe Limited, Ekornes ASA, Baldor Electric, VSN Systemen BV, Lion Brewery (Ceylon) PLC, PLANSEE Group, TE Connectivity, Hansgrohe SE, Openmatics, University of Toronto

Shaspa, Hildebrand, Kaifa, Ranhill Powertron, Federaci‹ Farmacutica (FedeFarma), Camden Council, The German Aerospace Center (DLR), Myers, Votorantim Group, Doosan Infracore, GreenIvory

Agncia Nacional de guas, Anbima, Aria Systems, Asiana Airlines, Astelit LLC, Australian Finance Group, Banco Occidental de Descuento, Bharat Petroleum Corporation Limited, BT, Caja de Seguros S.A., Casas GEO S.A.B. de C.V., Comic Relief UK, Corsair Components Inc., CSAM Health AS, CSOB Group, Datacraft Solutions, DenizBank A.S., Department of Treasury and Finance WA, Office of State Revenue, Deutsche B_rse AG, Deutsche Lufthansa AG, Deutsche Messe AG, Digicel Haiti, DPR COSEA, Essar Group, Essatto Software Pty Ltd, Farmšcia e Drogaria Nissei Ltda., Fomento Econ‹mico Mexicano S.A.B. de C.V. (FEMSA), FundaÊo Petrobras de Seguridade Social, Future Group, GFKL Financial Services AG, Grupo Posadas S.A.B. de C.V., Grupo Sinosserra, Guerra S.A. Implementos Rodovišrios, Hanatour International Service, Hays plc, Henan Mobile Co. Ltd, Hochschule Hof, Hong Kong and China Technology (Wuhan) Co. Ltd (Towngas Technology), Industries Corpa_al C.A., Infrastructure Development Finance Company Limited, Instituto Brasileiro de Geografia e Estatstica, Instituto Mexicano de la Propiedad Industrial, Kcell, LinkShare Corporation, MercadoLibre Inc., MetLife Inc., Nextgen Distribution, €BB-IKT GmbH, Octagon Research Solutions, Pacific Lutheran University, Paragon Data GmbH, Ping ltd., PJSC Trustbank, Prodaub _ Processamento de Dados de Uberl_ndia, Purdue University, Redknee Inc., Robi Axiata Limited, Shanghai Infoservice Technology Co. Ltd, Shanghai Sihua Technologies Co. Ltd, Sistema de Aguas de la Ciudad de M_xico, Solihull Metropolitan Borough Council, Suddenlink Communications, Suprajit Engineering Limited, Tallink Grupp, Terminales Ro de la Plata S.A., Therap Services LLC, Think Passenger Inc., Trafigura, Transmed S.A.L Lebanon, ValeShop, VelQuest Corporation, Vodafone Group plc, West Virginia Network, WIND Hellas Telecommunications S.A

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May 2026

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