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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 April 2025, in the Relational Databases Tools category, the mindshare of IBM Db2 Database is 7.1%, up from 6.6% compared to the previous year. The mindshare of SQL Server is 18.6%, down from 23.1% 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 newly added feature of ALSM is one of the top features"
"It's easy to search and extract data from the warehouse using queries."
"It's the best solution in terms of security, performance, and availability because the system is available 24/7."
"It's a very mature product."
"Its functionality and availability are valuable. Its availability is great. It is available 99.99% of the time."
"The solution's security is very tough and impenetrable."
"The most valuable aspect of this solution is its stability. We have never had any problems and have never had to contact technical support."
"I have found the most valuable feature to be its availability."
"The solution has the capability to scale."
"SQL Server provides good performance. Most of the SQL solutions can be integrated and this solution is no different, you are able to link other databases. For example, we have Oracle running a Postgres Server and it is linked. It follows the ISO standard when it comes to commands, it works well."
"Very stable relational database management system that offers ease of management, querying, and scaling. It has well-designed databases."
"SQL Server is widely used and it's simple. You cannot do without Microsoft if you want to manage IT for a business customer."
"The product is easy to use."
"The initial setup is time-efficient and can be done independently."
"The documentation and manuals are very good."
"The stability is fine, especially if you're hosting it on AWS or Azure. You can get up to 99.99% stability on AWS."
 

Cons

"Also, the website could be more intuitive. I didn't find it easy to find documentation on the website."
"It would be helpful to have more querying tools and more development tools for us to work easily with Microsoft."
"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."
"Their view of it is they're maintaining it, they're continuing to upgrade it, they're continuing to grow it, however, they don't go out and try and sell that as an architectural solution the way they do Linux and Unix."
"GUI needs improvement."
"There could be more user-friendly tools with features such as drag-and-drop functionality, visual basics, and low-code capabilities."
"The problem with this environment is that any software that you install is very costly because there are no free tools for this environment."
"We just want a bit more integration with Linux. That said, we are already seeing Linux more readily available on the mainframe environment."
"Database support could be improved."
"SQL Server could be improved with cheaper licensing because it's very expensive."
"We pay a license fee, it could always be cheaper."
"On the SQL Server Management Studio (SSMS) side, I have noticed more bugs in terms of being able to connect to our SQL servers. I can't tell how many times my recent server list got dropped or cleaned out. It is a pain, and it would be nice to have that recent connect list when you connect in. For whatever reason, once in a while, I get a hard error, and it'll close. When I go back in, everything is cleared out. It is annoying when you are working with more than a hundred database instances."
"I would like to see the performance improved. Migrating should be easier and the scalability needs improvement."
"When transferring data from the SQL Server to Excel, the data types are not copied correctly. This issue might be associated with the formatting of the data types."
"In terms of improvement, it could use more integration with other products."
"The tool's support needs to be improved."
 

Pricing and Cost Advice

"It's very expensive for West African countries like ours."
"I rate the price of the IBM Db2 Database an eight out of ten."
"The total cost of the solution depends upon the PVU licensing"
"Compared to other databases, Db2 is relatively cheaper."
"Db2 is less expensive than Oracle."
"The solution's hardware and subscription model for support are very expensive."
"There is a license for this solution and we pay every three years."
"We purchase the product's yearly license."
"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."
"For a brief period, approximately one year before 2018, I had experience working with the open-source version of SQL Server. During that time, I found SQL Server to be the preferred choice, in my opinion."
"For medium-sized customers who don't need some enterprise features, the tool would be available for 200 USD per month. For the enterprise segment, the tool's cost can go up to 6,000 USD."
"The licenses are really expensive. Their licensing model should be more simplistic."
"The price could be better. Aside from the basic features, if you need any additional features that can be extended, for example, if you want to connect with the heterogeneous databases, they are being managed as separate services and not included in the package. If you manage a database in Azure, it's not providing SFS and reporting services. However, on-premises, if you purchase the SQL Server license, it includes SFIS and SFRS services. If you take Postgre SQL and MySQL, they provide almost all the same features even though they are both open source databases."
"I don't know the exact prices because my focus is essentially technical and not on the bills. A few years ago, they changed the billing policy for the Enterprise Edition, and it became less attractive. But I believe they are still cheaper than Oracle. SQL Server isn't cheap, but it's not expensive either."
"Cost is a major derivative for any organization. It has a reasonable cost value, and its cloud support is also better than others. Comparatively, Oracle can do the same things or is even better in certain areas, but it is expensive. The cost along with the support are the plus factors for SQL Server."
"We have had to purchase the Enterprise version to the tune of a few hundred thousand dollars, which is just ridiculous."
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Top Industries

By visitors reading reviews
Educational Organization
61%
Financial Services Firm
8%
Computer Software Company
4%
Government
4%
Educational Organization
52%
Financial Services Firm
8%
Computer Software Company
7%
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: April 2025.
847,625 professionals have used our research since 2012.