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IBM Db2 Database vs IBM Informix comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Mar 4, 2025

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
6th
Average Rating
8.2
Reviews Sentiment
6.7
Number of Reviews
75
Ranking in other categories
No ranking in other categories
IBM Informix
Ranking in Relational Databases Tools
24th
Average Rating
8.2
Reviews Sentiment
7.5
Number of Reviews
17
Ranking in other categories
Embedded Database (10th)
 

Mindshare comparison

As of October 2025, in the Relational Databases Tools category, the mindshare of IBM Db2 Database is 7.6%, up from 7.0% compared to the previous year. The mindshare of IBM Informix is 1.9%, up from 1.7% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Relational Databases Tools Market Share Distribution
ProductMarket Share (%)
IBM Db2 Database7.6%
IBM Informix1.9%
Other90.5%
Relational Databases Tools
 

Featured Reviews

Michael Raz - PeerSpot reviewer
Efficient access path optimization and performance excellence with helpful support
IBM Db2 for zOS serves as the central database for all the core business applications in the two banks I work with. All applications use Db2 as a data server. We fully implement and utilize most of Db2's functionalities and capabilities for core banking business applications IBM Db2 has…
Nasir Niamat - PeerSpot reviewer
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.

Quotes from Members

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

Pros

"The solution can scale."
"It is quite a stable solution."
"When you submit a ticket the response time is quick."
"Very good for performance and scalability."
"Its functionality and availability are valuable. Its availability is great. It is available 99.99% of the time."
"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."
"The most valuable feature of the IBM Db2 Database is the ease of use, and the ability to do query writing of any SQL statement and have an output."
"It's the best solution in terms of security, performance, and availability because the system is available 24/7."
"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."
"The scalability is very good."
"Replication, all levels of replication, query charting, and the MongoDB embedded are the most valuable features of this solution."
"The solution's stability, performance, enhanced functionality, and replication are all great features."
"Every version is faster than the previous."
"It is very easy to install IBM Informix, very easy to scale, and support is quite better."
"Replication is a valuable feature and easy to use."
"The stability is incredible. I have customers with uptimes of several years."
 

Cons

"Db2 interface could be improved a bit. Comparing it to Oracle, Db2's interfaces could be improved."
"I would like to see some artificial intelligence brought into the solution."
"The user interface is old and needs to be improved."
"The initial set up was complex."
"The initial setup could be improved."
"The product needs to improve its configuration and storage."
"There are some issues with Db2's database file system not being readable. The storage could also be increased, and the monitoring could be improved."
"The licensing fees can be reduced."
"The support team could include local engineers to establish efficient communication. It will help us speed up the escalation process."
"It would be helpful to have IBM salespeople know that Informix exists, and sell it. Currently, it is completely ignored by IBM."
"I would like to see backups from secondary servers."
"I experienced poor input/output (IO) performance."
"The solution really doesn't add new features very often."
"There should be more intelligence surrounding discovering data to be able to automatically create indexes."
"The pricing is a bit expensive."
"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."
 

Pricing and Cost Advice

"If I consider the price of IBM Db2 Database, I would say there are cheaper products in the market."
"Compared to other databases, Db2 is relatively cheaper."
"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."
"It is expensive."
"I think that everyone knows that with IBM the standard price is higher than the others."
"Db2 is less expensive than Oracle."
"The solution costs less than other products."
"Licensing fees are on a yearly basis."
"I am not aware of the licensing costs or terms."
"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."
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Top Industries

By visitors reading reviews
Financial Services Firm
20%
Manufacturing Company
10%
Computer Software Company
9%
Government
9%
Financial Services Firm
10%
Computer Software Company
10%
Manufacturing Company
7%
Comms Service Provider
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business20
Midsize Enterprise13
Large Enterprise48
By reviewers
Company SizeCount
Small Business9
Midsize Enterprise2
Large Enterprise8
 

Questions from the Community

What do you like most about IBM Db2 Database?
Db2 database scalability and performance capabilities match our database needs. It covers pretty much everything a database administrator or engineer might need.
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.
What needs improvement with IBM Db2 Database?
The IBM Db2 Database is a good solution, but now there is a high maintenance charge. The IBM Db2 Database needs improved support, and there are many difficulties in using it. We tend to use the clo...
What do you like most about IBM Informix?
It supports multiple applications and business intelligence tools.
What is your experience regarding pricing and costs for IBM Informix?
The product has reasonable pricing. We purchase its yearly license.
What needs improvement with IBM Informix?
The key areas for improvement revolve around understanding the current customer trends and demands, particularly in software and database requirements. The product's performance could be better com...
 

Comparisons

 

Also Known As

DB2
Informix
 

Overview

 

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‹ Farmacutica (FedeFarma), Camden Council, The German Aerospace Center (DLR), Myers, Votorantim Group, Doosan Infracore, GreenIvory
Find out what your peers are saying about IBM Db2 Database vs. IBM Informix and other solutions. Updated: September 2025.
868,706 professionals have used our research since 2012.