IBM Db2 Database vs IBM Informix comparison

Why PeerSpot?

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 8.1, while IBM Informix is ranked #26 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

8,748 Views
8,573 Comparison Views

90% willing to recommend

IBM Informix

Read 17 IBM Informix reviews

2,613 Views
2,404 Comparison Views

85% willing to recommend

IBM Db2 Database

IBM Informix

Comparison Buyer's Guide

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Executive SummaryUpdated on Mar 4, 2025

IBM Db2 and Informix compete in the database management systems category. Db2 appears to have the upper hand due to its comprehensive platform support and strong integration capabilities.

Features: Db2 offers extensive platform support, powerful SQL dialects, and self-tuning memory management that enhances performance and usability. It integrates well with various IBM tools and features robust security options. Informix is known for flexible data management, ease of use, and strong capabilities in hybrid data and replication, efficiently supporting large-scale data with minimal resources.

Room for Improvement: Db2 has a steep learning curve and a complex licensing process, with a need for a more user-friendly interface. Informix needs a stronger marketing presence and improved integration with modern tools, as well as advanced features like data anonymization. Both require enhanced support structures and more intuitive setup processes.

Ease of Deployment and Customer Service: Db2 mainly focuses on-premises deployment with hybrid cloud options, but users find its setup and interface challenging. Informix offers similar deployment flexibility with fewer reported issues. Db2 enjoys broad customer service access but experiences vary in support quality. Informix's support is adequate but requires better global reach and proactive engagement.

Pricing and ROI: Db2 is considered expensive but more cost-effective than Oracle in terms of long-term ROI due to its strong performance and security. Informix, while perceived as high-priced, is competitive within the industry, offering various editions for different enterprise scales. Both solutions need careful license management to maximize ROI and control costs.

To learn more, read our detailed IBM Db2 Database vs. IBM Informix Report (Updated: September 2026).

Buyer's Guide

IBM Db2 Database vs. IBM Informix

September 2026

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Helped 913,806 peers since 2012

Review summaries and opinions

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

Categories and Ranking

IBM Db2 Database

Ranking in Relational Databases Tools

7th

Average Rating

8.2

Reviews Sentiment

6.6

Number of Reviews

Ranking in other categories

No ranking in other categories

IBM Informix

Ranking in Relational Databases Tools

26th

Average Rating

8.2

Reviews Sentiment

7.5

Number of Reviews

Ranking in other categories

Embedded Database (10th)

Mindshare comparison

As of September 2026, in the Relational Databases Tools category, the mindshare of IBM Db2 Database is 6.6%, down from 7.3% compared to the previous year. The mindshare of IBM Informix is 1.8%, up from 1.8% compared to the previous year. It is calculated based on PeerSpot user engagement data.

Relational Databases Tools Mindshare Distribution
Product	Mindshare (%)
IBM Db2 Database	6.6%
IBM Informix	1.8%
Other	91.6%

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

Quotes from Members

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

Pros

"The availability, reliability, consistency, security, performance, and methodology of the solution are all excellent."

"It is quite a stable solution."

"The solution's initial setup is straightforward."

"Scales well enough for a relational database."

"It is a scalable solution."

"Db2 database scalability and performance capabilities match our database needs. It covers pretty much everything a database administrator or engineer might need."

"It's very easy to figure out how the data is present, I can check what the keys in the table are, and I can easily export that to further work on it in Snowflake."

"It's very secure."

More IBM Db2 Database pros

"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."

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

"This solution has made financial reporting possible by allowing financial people the opportunity to set Informix to "Auto Pilot" so that they can attend other duties."

"Flexible Grid provides the ability to automatically create database objects, such as tables, indexes, and stored procedures on all nodes within the grid as a single operation."

"The scalability is very good."

"For IoT business cases, having Informix Enterprise Edition work on edge computers, like Raspberry Pi and using Informix replication, makes complex situations simple to build and maintain."

"The initial setup is very simple."

"The initial setup is pretty easy."

More IBM Informix pros

Cons

"The command line part of this solution could be much better."

"The solution no longer supports POWER8."

"The price should be lower."

"I would say that the tool has to be made more cloud-friendly and should have agreements with AWS, Microsoft, or Google to run things on hyperscalers."

"Right now, the setup for AWS/Azure licensing is very confusing and not cost-effective."

"We just want a bit more integration with Linux. That said, we are already seeing Linux more readily available on the mainframe environment."

"The initial set up was complex, but that was a long time ago."

"It would be helpful to have a hybrid data storage facility that includes NoSQL technologies."

More IBM Db2 Database cons

"The technical support services need substantial improvement."

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

"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."

"The pricing is a bit expensive."

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

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

"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."

"I experienced poor input/output (IO) performance."

More IBM Informix cons

Pricing and Cost Advice

"The solution costs less than other products."

"It is expensive when compared to other products."

"I rate the product pricing a nine out of ten."

"The solution's hardware and subscription model for support are very expensive."

"Compared to other databases, Db2 is relatively cheaper."

"Db2 is less expensive than Oracle."

"Among Microsoft SQL Server, Oracle, and Db2, Microsoft SQL Server is the cheapest one, and Oracle is the most expensive one. Db2 is in the middle. As compared to SQL Server, its price could go down. It will be good for customers."

"Clients are required to purchase a license."

More IBM Db2 Database pricing and cost advice

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

"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."

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

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Top Industries

By visitors reading reviews

Financial Services Firm

19%

Manufacturing Company

Government

Construction Company

Comms Service Provider

12%

Construction Company

11%

Outsourcing Company

Financial Services Firm

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

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 capabilities or products like those from BMC, which many installations might also purchase.

See all answers

What needs improvement with IBM Db2 Database?

A potential area of improvement is better documentation. From an educational perspective, it is difficult for people to understand IBM Db2 Database much faster compared to databases such as Oracle ...

See all answers

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 all configuration details. Any workflow that is created, any configuration messa...

See all answers

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 moving the whole application to a new database would require significant cost. The ...

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What needs improvement with IBM Informix?

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 popular compared to others. We are using it because our application was initially ...

See all answers

Comparisons

SQL Server vs IBM Db2 Database

Compared 44% of the time

Oracle Database vs IBM Db2 Database

Compared 10% of the time

MySQL vs IBM Db2 Database

Compared 5% of the time

Teradata vs IBM Db2 Database

Compared 5% of the time

Oracle Database In-Memory vs IBM Db2 Database

Compared 2% of the time

More IBM Db2 Database Competitors

SQL Server vs IBM Informix

Compared 16% of the time

Oracle Database vs IBM Informix

Compared 16% of the time

Actian Ingres vs IBM Informix

Compared 7% of the time

SAP HANA vs IBM Informix

Compared 6% of the time

Oracle Database In-Memory vs IBM Informix

Compared 6% of the time

More IBM Informix Competitors

Product Reports

Buyer's Guide

IBM Db2 Database

September 2026

Download IBM Db2 Database product report

Buyer's Guide

IBM Informix

September 2026

Download IBM Informix product report

Also Known As

DB2

Informix

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

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

Buyer's Guide

IBM Db2 Database vs. IBM Informix

September 2026

Free Report: IBM Db2 Database vs. IBM Informix

Find out what your peers are saying about IBM Db2 Database vs. IBM Informix and other solutions. Updated: September 2026.

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