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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 solution's security is very tough and impenetrable."
"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."
"Its robustness, scalability, availability, and performance are valuable. All these are the major attributes of a relational database for supporting a very high-volume business, and Db2 is very good in all those areas and in all those attributes."
"The most valuable aspect of this solution is its stability. We have never had any problems and have never had to contact technical support."
"The newly added feature of ALSM is one of the top features"
"Reliable, robust with great features."
"The most valuable feature of this solution is the integration with other IBM products."
"It's easy to search and extract data from the warehouse using queries."
"I love SQL Server's Common Table Expression. In addition to that, I like its lead and lag functions. That helped us reduce a lot of code when comparing rows in SQL Server."
"The interface for building the queries or writing the store procedures is good."
"SQL is very easy to manage."
"I have contacted technical support, and overall my experience with technical support was okay."
"There is no lack of features."
"This solution has proven stability and operational power."
"It is easy to manage for the administrator. It is also easy to use for applications that are Windows-based. It is a very stable product, and it has got backup and recovery tools."
"The solution has the capability to scale."
 

Cons

"IBM Db2 Database could improve with better security."
"The solution's UI hasn't been upgraded. The solution’s UI is an area to improve because the solution was developed long ago."
"I would like to see some artificial intelligence brought into the solution."
"They could enhance the product's cloud integration and general-purpose database capabilities."
"The usage of Db2 could be simplified, as it is quite complex and requires substantial knowledge of Db2 and zOS."
"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."
"It would be helpful to have more querying tools and more development tools for us to work easily with Microsoft."
"The solution no longer supports POWER8."
"Occasionally the performance, as good as it is, is a bit off. We sometimes experience memory spiking. If they could maybe fix that aspect of the solution, that would be quite helpful for our organization."
"The pricing in general could be better."
"The solution could use better governance on the management side, especially around data governance."
"Analysis services have a lot of room for improvement. Basically, manageability on the available tools. They should have improved them already. They are not very efficient. My main headache is with the analysis service, and it would be really good if Microsoft developed some additional tools that are more user-friendly to manage the analysis. This is both from the perspective of management, users' roles, and performance analysis. My main wish for SQL Server would be that management tools for analysis services grow and mature a bit."
"We would like to have a common storage option in the SQL Server. This option is available in Oracle Database. It would be great if Microsoft could create something like a columnstore that has not only indexing but also tables for common storage."
"SQL Server is an expensive solution"
"The documentation could be much better. It's lacking right now. If there are better help pages, for even complicated queries and stuff like that that would be quite a help for users."
"Performance could be improved."
 

Pricing and Cost Advice

"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."
"If I consider the price of IBM Db2 Database, I would say there are cheaper products in the market."
"They are competitive and honest (compared to how peer firms approach licensing conversations). ​"
"Licensing fees are on a yearly basis."
"I rate the price of the IBM Db2 Database an eight out of ten."
"Compared to other databases, Db2 is relatively cheaper."
"The total cost of the solution depends upon the PVU licensing"
"It is expensive. The price depends on the size of the machine on which you are installing the Db2 and the features you are using. It also depends on the country. IBM has different policies and different options for payment for this product."
"This is a downside of enterprise Microsoft products."
"To scale the solution there are additional costs."
"​We are a Microsoft shop, so we use Active Directory. That integrates well with this product, but we did look at Oracle. We also looked at IBM. This was the best price point for us for what we were getting.​"
"Some of our clients purchase the license and others do not, they use Express SQL Server."
"This solution is available at a much lower price point than Oracle."
"There is a license required for this solution and we pay monthly. The price is reasonable compared to other solutions."
"It comes with the bundle package that we have. We have Microsoft Volume Licensing, so we don't have to pay for it separately. It is a part of the package."
"I know the SQL Server pricing model, I believe, is based on CPU cores that your database server has, but I don't know what the solution's prices are though."
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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
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.
845,040 professionals have used our research since 2012.