Citus Data vs IBM Db2 Database comparison

Citus Data and IBM are both solutions in the Relational Databases Tools category. Citus Data is ranked #25, while IBM is ranked #5 with an average rating of 8.4. Citus Data holds a 2.6% mindshare in SQL, compared to IBM’s 6.6% mindshare. Additionally, 100% of Citus Data users are willing to recommend the solution, compared to 90% of IBM users who would recommend it.

Citus Data

Read 3 Citus Data reviews

1,344 Views
1,250 Comparison Views

100% willing to recommend

IBM Db2 Database

Read 75 IBM Db2 Database reviews

3,607 Views
3,463 Comparison Views

90% willing to recommend

Citus Data

IBM Db2 Database

Comparison Buyer's Guide

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Executive SummaryUpdated on Mar 4, 2025

IBM Db2 Database and Citus Data are competing in the relational databases category. Citus Data seems to have the upper hand due to its robust horizontal scaling capabilities and high-performance features.

Features: IBM Db2 Database is known for its advanced data management, broad integration options, and comprehensive analytics capabilities. Citus Data is recognized for its ability to handle large volumes through distributed database systems, horizontal scalability, and massive parallel processing.

Ease of Deployment and Customer Service: IBM Db2 Database provides a traditional deployment model with extensive documentation and support, suitable for enterprises with complex infrastructures. Citus Data offers a straightforward deployment model leveraging PostgreSQL for easier setup and customization, benefiting from open-source community support.

Pricing and ROI: IBM Db2 Database has a higher setup cost with significant investments in maintenance and training, providing substantial ROI for enterprises with traditional infrastructure. Citus Data is competitively priced, especially in cloud-based environments, with lower initial costs and quick ROI through performance gains and efficient scaling.

To learn more, read our detailed Citus Data vs. IBM Db2 Database Report (Updated: December 2025).

Buyer's Guide

Citus Data vs. IBM Db2 Database

December 2025

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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:

Categories and Ranking

Citus Data

Ranking in Relational Databases Tools

25th

Average Rating

8.0

Reviews Sentiment

7.3

Number of Reviews

Ranking in other categories

No ranking in other categories

IBM Db2 Database

Ranking in Relational Databases Tools

5th

Average Rating

8.2

Reviews Sentiment

6.7

Number of Reviews

Ranking in other categories

No ranking in other categories

Mindshare comparison

As of January 2026, in the Relational Databases Tools category, the mindshare of Citus Data is 2.6%, up from 1.9% compared to the previous year. The mindshare of IBM Db2 Database is 6.6%, down from 6.8% compared to the previous year. It is calculated based on PeerSpot user engagement data.

Relational Databases Tools Market Share Distribution
Product	Market Share (%)
IBM Db2 Database	6.6%
Citus Data	2.6%
Other	90.8%

Relational Databases Tools

Featured Reviews

Arucy Lionel

Co-Founder at Afriziki

Efficiently handles high-traffic scenarios and compatible with PostgreSQL extensions, offering flexibility in database management

There are many areas of improvement , especially in terms of DDL query routing. Even though it's masterless, DDL queries need to be sent to the coordinator node. Also, setting up a multi-node environment could be more straightforward. Currently, setting up a multi-node environment is challenging. It's a bit tricky. Installation on each PostgreSQL node can lead to communication issues between nodes. An automatic rebalancing feature would be a significant improvement. Currently, I have to manually command the rebalance. It would be more convenient if it was rebalanced automatically. The dashboard and monitoring capabilities are good, but it would be helpful to have an integrated availability dashboard.

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reviewer2708292

Associate Director, Data Architecture at a financial services firm with 10,001+ employees

Support improves setup and maintenance while pricing influences decision

If you have a similar use case and the same deal with IBM as our company, it is definitely a good option and choice. The company I work with has more than 50,000 people and more than 500 support staff. We are not locked into one database vendor. We typically work with multiple database vendors simultaneously, selecting the top choice based on the deals we make and other considerations. We do not use IBM Db2 Database related to AI at this moment because our AI project PLC is still very small scale. We may consider it in the future if we have enough scale. Overall rating for IBM Db2 Database is 8.5 out of 10.

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Quotes from Members

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

Pros

"It's very straightforward to implement the solution. It took us two days to set up everything."

"You can use Citus Data to write complex scripts. I like its version upgrades and disaster recovery as well."

"Its distributed processing capabilities are a standout feature. It requires minimal changes to get up and running if you already have a system on PostgreSQL. Citus can run in its natural state."

"The most valuable feature of the solution is its compatibility with IBM Power Systems."

"The self-management and optimization features are probably the best on the market"

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

"The structure is straightforward, consisting of the test file and the logical and physical files. You have one physical file and many logical files related to it."

"The setup process has become much easier recently."

"I can easily export that to further work on it in Snowflake."

"When you submit a ticket the response time is quick."

"The solution can scale."

More IBM Db2 Database pros

Cons

"There are many areas of improvement , especially in terms of DDL query routing. Even though it's masterless, DDL queries need to be sent to the coordinator node. Also, setting up a multi-node environment could be more straightforward."

"Citus Data needs to improve its stability. Do not consider this product if you have the budget. It is still developing and has a lot of issues."

"More features in monitoring and the reporting could make it better."

"The IBM Db2 Database needs improved support, and there are many difficulties in using it."

"The product’s user interface is not easy to use."

"End-to-end encryption specifically is something the solution needs to have in the next release."

"The solution could improve by providing more integration."

"The solution no longer supports POWER8."

"The management of Db2 should be simplified because there are not too many specialists in this area, and the learning curve of Db2 specialists is very long. After the courses, probably it takes one and a half or two years to get to the point when you are using the product properly in the production systems. So, the complexity is very high, and the most important thing is to simplify the management of the product, including self-maintenance. They should simplify the installation, management, and monitoring to simplify the product. It takes too long for a person to be a specialist in this product."

"The only drawback that we see in Db2 Database is the crash recovery. When there is a crash and somebody has to do the recovery, Db2 Database first stops, and then it does any crash recovery. In Oracle Database, crash recovery happens within the database. The database is not shut down."

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

More IBM Db2 Database cons

Pricing and Cost Advice

"Citus Data is an open-source product."

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

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

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

"I would rate the pricing a five out of ten. It's not super expensive, but also not cheap."

"We did not buy it. It came with our hardware without any complimentary maintenance. If I compare Db2 Database with Oracle Database, its price is lower than Oracle Database."

"We purchase the product's yearly license."

"The solution's pricing is fine."

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

More IBM Db2 Database pricing and cost advice

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Top Industries

By visitors reading reviews

Computer Software Company

15%

Financial Services Firm

10%

Comms Service Provider

Consumer Goods Company

Financial Services Firm

19%

Manufacturing Company

Computer Software Company

Government

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

No data available

By reviewers
Company Size	Count
Small Business	20
Midsize Enterprise	13
Large Enterprise	48

Questions from the Community

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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.

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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?

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...

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Comparisons

CockroachDB vs Citus Data

Compared 21% of the time

Neon vs Citus Data

Compared 14% of the time

YugabyteDB vs Citus Data

Compared 14% of the time

SQL Server vs Citus Data

Compared 9% of the time

Oracle Database vs Citus Data

Compared 8% of the time

More Citus Data Competitors

SQL Server vs IBM Db2 Database

Compared 40% of the time

Oracle Database vs IBM Db2 Database

Compared 17% of the time

SAP HANA vs IBM Db2 Database

Compared 9% of the time

Teradata vs IBM Db2 Database

Compared 9% of the time

MySQL vs IBM Db2 Database

Compared 5% of the time

More IBM Db2 Database Competitors

Product Reports

Buyer's Guide

Relational Databases Tools

January 2026

Download Citus Data product report

Buyer's Guide

IBM Db2 Database

January 2026

Download IBM Db2 Database product report

Also Known As

No data available

DB2

Overview

Citus is a distributed database that extends PostgreSQL, allowing you to continue using all the powerful Postgres features while still scaling.

Whether you're running into a ceiling on a single node, or need more performance for real-time analytical queries Citus can help.

Citus Data

DB2 Enterprise for Linux, UNIX, and Windows is the ideal data server for the most demanding workloads. New XML support is designed to help firms minimize the time and effort it takes to persist and use their XML data reducing development costs and improving business agility.

IBM

Sample Customers

Cloud Flare, Agari, Mix Rank, Heap

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

Buyer's Guide

Citus Data vs. IBM Db2 Database

December 2025

Free Report: Citus Data vs. IBM Db2 Database

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