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IBM Db2 Database vs SQL Server comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Jan 12, 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
6.8
Number of Reviews
73
Ranking in other categories
No ranking in other categories
SQL Server
Ranking in Relational Databases Tools
1st
Average Rating
8.4
Reviews Sentiment
6.8
Number of Reviews
268
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of March 2025, in the Relational Databases Tools category, the mindshare of IBM Db2 Database is 7.0%, up from 6.5% compared to the previous year. The mindshare of SQL Server is 19.3%, down from 23.2% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Relational Databases Tools
 

Featured Reviews

SimonHiggins - PeerSpot reviewer
Very scalable with high availability and excellent technical support
The good thing is that there are improvements coming with later function levels for the z/OS Db2. I'd like it if, with the operating system that we've got, z/OS, on the mainframe, it would allow us to refresh the hardware to run Linux dockers on the mainframe. This means this might give us opportunities for different ways of coming into the Db2 environment in the future. We just want a bit more integration with Linux. That said, we are already seeing Linux more readily available on the mainframe environment. Not only have we got the premium operating systems on OS. We can run LPARs on the same mainframe footprint that is also supporting Linux. This is what has improved and made the mainframe environment more competitive. We're also looking at AI for Db2 as well, and machine learning for the future. We know that AI has come out, that we're going to get that, and we're going to evaluate that product next year for Db2. That said, I haven't got any real complaints about Db2 on the mainframe. For the most part, a lot of the problems we have nowadays are to do with communication between the various teams that you would class as stakeholders.
Azizul Haque - PeerSpot reviewer
It has eliminated all kinds of inconsistencies, and it is reliable, secure, and fast
I don't know whether SQL Server can support large organizations where the database size is more than 100 GB. It might be because of SQL Server, or it might be because of the programming of the software vendor, but a lot of people think that it is a problem with SQL Server. It can't handle a large amount of data or large data size. In terms of its usage, about 90% of our applications are running on the SQL Server database. We have around 1,600 users for our software, and all the applications are connected to the SQL Server database.

Quotes from Members

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

Pros

"The solution's security is very tough and impenetrable."
"It has a good feature called pureScale, which is just for scalability. It is a perfect solution for environments where scalability is going to be an issue."
"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."
"IBM DB2 pureScale Feature is valuable."
"It's the best solution in terms of security, performance, and availability because the system is available 24/7."
"The most valuable feature of the solution is its compatibility with IBM Power Systems."
"When you submit a ticket the response time is quick."
"The most valuable feature is PowerPC support."
"The feature that I have found most valuable is that it is easy to code."
"SQL Server and their offers are very good. You can switch over, export, and do other things."
"SQL Server is easy to manage."
"The solution seems to be pretty flexible."
"It is easy to use for a BI specialist."
"I value the ability it gives me to test on small machines and easily scale up to larger devices for live applications."
"SQL Server is similar to other Microsoft products, such as BI, they are easy to use. You do not need to have an expensive BD to maintain them. All the useful intuitive features you find in Microsoft solutions you will find in SQL Server."
"The replication feature, user interface, reporting services, and notification services are really good. They are providing SQL profiler and SQLCMD as their integrated software, so we don't find it difficult to integrate any of our third-party applications with MS SQL because all of them support MS SQL very clearly."
 

Cons

"They could enhance the product's cloud integration and general-purpose database capabilities."
"The licensing fees can be reduced."
"The pricing could be improved, it's expensive."
"We just want a bit more integration with Linux. That said, we are already seeing Linux more readily available on the mainframe environment."
"The solution could improve by providing more integration."
"GUI needs improvement."
"IBM Db2 Database is not ACID compliant, which would improve it. Db2 lacks Isolation, so when two people are trying to update the same field at the same time it can become stuck. Other newer databases do not have this issue, such as Microsoft SQL, Oracle DB, PostgreSQL, and SAP HANA."
"The technical support can be faster."
"The stability of the solution should be improved in the next release. Sometimes it is great, sometimes it is troublesome. I would also like data conversion and the code pages to be a bit more straightforward."
"The pricing of the product could be better."
"The maintenance and tasks should be improved so as to reduce database files."
"Scalability is an area that needs improvement, and the deployment is difficult, which why I'm looking for an appliance to deploy it in a much more scalable way."
"Third-party services from Redgate should be built-in to it, like SQL Search."
"Could have additional security."
"In the next releases, I would only like more enhanced backups and more restore points."
"Microsoft doesn't have active-active load balancing scenarios. It's always a failover cluster."
 

Pricing and Cost Advice

"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."
"They are competitive and honest (compared to how peer firms approach licensing conversations). ​"
"Clients are required to purchase a license."
"It is expensive when compared to other products."
"Licensing fees are on a yearly basis."
"It's very expensive."
"I would rate the pricing a five out of ten. It's not super expensive, but also not cheap."
"I rate the price of the IBM Db2 Database an eight out of ten."
"It is expensive, but you get what you pay for."
"The licensing is on an annual basis."
"The cost associated with SQL Servers is on the higher side."
"Some of our clients purchase the license and others do not, they use Express SQL Server."
"The price of SQL Server is great. In my company, SQL Server is part of the Microsoft Suite, we don't have to pay for any additional license costs, it's quite cost-effective for us."
"SQL Server has the best licensing price."
"It is expensive, especially when you have open-source products that are just about as functional and they're free. They might want to consider re-evaluating their pricing. We purchased it in retail. It was somewhere in the neighborhood of 9,000. There is just the standard licensing fee. If they migrate this product the way they're trying to do everything else, eventually, it is going to be subscription-based, which is going to suck, but that's the way the industry is going, so it is what it is."
"The price of the solution is fine."
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Top Industries

By visitors reading reviews
Educational Organization
62%
Financial Services Firm
8%
Computer Software Company
4%
Government
3%
Educational Organization
53%
Financial Services Firm
8%
Computer Software Company
6%
Manufacturing Company
5%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
 

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 user interface is old and needs to be improved. It doesn't match the responsive and suggestion-rich UI of cloud solutions. New functions don't come to mind.
Would you say the price of SQL Server is high compared to that of similar products?
SQL Server is fairly priced because it has various editions, depending on the number of users, servers, or core packs you are using. If you compare the product to others in this category, the price...
Has using SQL Server helped your organization in any way?
SQL Server has helped my organization through partitioning to distribute the workload, as it splits them up into smaller pieces so the machines can easily deal with it. However, this comes with a h...
Which authentication mode is best for SQL Server?
My company connects through SQL Server authentication. We have company Windows accounts, but we do not want to connect the two, out of security concerns and to keep things separated for our own pur...
 

Comparisons

 

Also Known As

DB2
Microsoft SQL Server, MSSQL, MS SQL
 

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
Microsoft SQL Server is used by businesses in every industry, including Great Western Bank, Aviva, the Volvo Car Corporation, BMW, Samsung, Principality Building Society, Wellmark Blue Cross and Blue Shield, and the Catholic District School Board of Eastern Ontario.
Find out what your peers are saying about IBM Db2 Database vs. SQL Server and other solutions. Updated: March 2025.
841,676 professionals have used our research since 2012.