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Oracle Database In-Memory vs kdb+ comparison

 

Comparison Buyer's Guide

Executive Summary

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

kdb+
Ranking in Relational Databases Tools
39th
Average Rating
9.0
Number of Reviews
1
Ranking in other categories
No ranking in other categories
Oracle Database In-Memory
Ranking in Relational Databases Tools
11th
Average Rating
8.8
Reviews Sentiment
7.1
Number of Reviews
33
Ranking in other categories
Embedded Database (2nd)
 

Mindshare comparison

As of August 2026, in the Relational Databases Tools category, the mindshare of kdb+ is 0.9%, up from 0.4% compared to the previous year. The mindshare of Oracle Database In-Memory is 2.2%, up from 1.7% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Relational Databases Tools Mindshare Distribution
ProductMindshare (%)
Oracle Database In-Memory2.2%
kdb+0.9%
Other96.9%
Relational Databases Tools
 

Featured Reviews

Nitin Garg - PeerSpot reviewer
Vice President - Financial Services at Evalueserve
An easy-to-deploy solution that can be used for data ingestion and usage
I work for a fintech company where we create several strategies generally built on finance data, which are like one-time series data. We deal with huge bulk data on a daily basis, and we use kdb+ for data ingestion and usage The most valuable feature of kdb+ is the speed at which it returns the…
Hosney Osman - PeerSpot reviewer
Technical Solution Architect at Vodafone
Real-time analytics have transformed response times and support huge data volumes with compression
I do not have any comment related to the improvement of the solution; for sure, it needs improvement, but for my use cases, it is very sufficient, and I think for the biggest companies, it needs a very powerful infrastructure. The area where improvement is required the most in the product is the UI. The problem with the UI is that it is not complex for understanding, but it needs some training to know what each button does, how it works, and the many variables needed.

Quotes from Members

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

Pros

"The solution returns data quickly, and data retrieval is fast in kdb+."
"Normally, every database server uses hard disks. In-Memory has a feature, apart from their database, which is very good. When we start our server, all your data needs loading memory. We can use that. It's a very good feature. I think they added this feature in 2019. We can mount memory in the partition, create partitions in there, and create table space from that spot to share. It's a really good feature. We use it a lot."
"The on-premise version is stable. We have different teams and resources for the server side, for admin, and for development. We can easily take care of all the services and applications."
"We can provide a high standard with this solution to our customers by using such products."
"The most valuable feature of Database In-Memory is that it's really fast."
"The most valuable feature is that Database-In-Memory is more consistent and faster than traditional databases as it requires fewer CPUs to process instructions."
"Oracle is the best database, but I love open-source software."
"We are using Oracle Database In-Memory as an indirect approach to improving response times, and in mixed-workload environments, we use the In-Memory column store to support OLAP-type queries without harming the latency-critical OLTP operations the systems earn money with."
"The Oracle database is easier to program and manage, and is secure."
 

Cons

"The solution should have a more user-friendly user interface."
"We use some partitions in In-Memory. We have a very large table and a low dose. It is very expensive in data to load all of them into In-Memory. It takes up more memory slots in the server, as well as a lot of RAM. We use last partitions on the table. We always need to create a script and make a schedule that can load a last partition in In-Memory. Oracle doesn't have features to do this automatically. I would like them to allow us to load last partitions, as well as other table partitions, in In-Memory. I think a good feature would do that automatically, letting you see a table, load a large partition, and monitor loading memory. It's quite a good feature."
"Oracle Database In-Memory is more expensive than Azure, and the support from the Oracle team is not very good, especially since they do not have a support team in our region."
"We have a very large table and a low dose. It is very expensive in data to load all of them into In-Memory. It takes up more memory slots in the server, as well as a lot of RAM."
"It's good and it functions, but it's not the easiest add-on to Database to work with."
"The area where improvement is required the most in the product is the UI."
"Multitenant, to be honest, is a little adolescent at this point."
"In the next release, Oracle should include column store or advanced query optimization so a database can be optimized by enabling analytic queries to run faster."
"The high cost of the product is an area of concern where improvements are required."
 

Pricing and Cost Advice

Information not available
"I rate the pricing a zero out of ten because Database In-Memory is too costly."
"The solution's pricing is high."
"The product is expensive."
"Oracle Database In-Memory is expensive."
"Database In-Memory is priced a bit higher than its competitors like Microsoft."
"It's quite costly and it comes with a fixed price."
"The pricing is pretty good so I rate it an eight out of ten."
"The platform's licensing cost needs improvement."
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Top Industries

By visitors reading reviews
Financial Services Firm
44%
Comms Service Provider
7%
Educational Organization
5%
Energy/Utilities Company
5%
Financial Services Firm
13%
Comms Service Provider
9%
Construction Company
7%
Outsourcing Company
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
By reviewers
Company SizeCount
Small Business6
Midsize Enterprise4
Large Enterprise23
 

Questions from the Community

Ask a question
Earn 20 points
What needs improvement with Oracle Database In-Memory?
I do not have any comment related to the improvement of the solution; for sure, it needs improvement, but for my use cases, it is very sufficient, and I think for the biggest companies, it needs a ...
What is your primary use case for Oracle Database In-Memory?
The major use case for Oracle Database In-Memory is real-time applications that need a fast response between the application and the database directly without any latency.
 

Comparisons

 

Overview

 

Sample Customers

UniCredit, AIRBUS
Shanghai Customs
Find out what your peers are saying about Microsoft, Oracle, SAP and others in Relational Databases Tools. Updated: August 2026.
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