Oracle Database In-Memory vs kdb+ comparison

Kx Systems and Oracle are both solutions in the Relational Databases Tools category. Kx Systems is ranked #33, while Oracle is ranked #10 with an average rating of 8.8. Kx Systems holds a 0.9% mindshare in SQL, compared to Oracle’s 1.9% mindshare. Additionally, 100% of Kx Systems users are willing to recommend the solution, compared to 100% of Oracle users who would recommend it.

kdb+

Read 1 kdb+ review

421 Views
370 Comparison Views

100% willing to recommend

Oracle Database In-Memory

Read 33 Oracle Database In-Memory reviews

1,410 Views
945 Comparison Views

100% willing to recommend

kdb+

Oracle Database In-Memory

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Executive Summary

We performed a comparison between Oracle Database In-Memory and kdb+ based on real PeerSpot user reviews.

Find out what your peers are saying about Microsoft, Oracle, SAP and others in Relational Databases Tools.

To learn more, read our detailed Relational Databases Tools Report (Updated: November 2025).

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Relational Databases Tools

November 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

kdb+

Ranking in Relational Databases Tools

33rd

Average Rating

9.0

Number of Reviews

Ranking in other categories

No ranking in other categories

Oracle Database In-Memory

Ranking in Relational Databases Tools

10th

Average Rating

8.8

Reviews Sentiment

7.1

Number of Reviews

Ranking in other categories

Embedded Database (4th)

Mindshare comparison

As of January 2026, in the Relational Databases Tools category, the mindshare of kdb+ is 0.9%, up from 0.3% compared to the previous year. The mindshare of Oracle Database In-Memory is 1.9%, up from 1.3% compared to the previous year. It is calculated based on PeerSpot user engagement data.

Relational Databases Tools Market Share Distribution
Product	Market Share (%)
Oracle Database In-Memory	1.9%
kdb+	0.9%
Other	97.2%

Relational Databases Tools

Featured Reviews

Nitin Garg

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…

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Hosney Osman

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.

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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

"The solution returns data quickly, and data retrieval is fast in kdb+."

"It accelerates query processing, which in turn speeds up operations and streamlines workflow, and ultimately enhancing productivity."

"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."

"We use the tool for real-time data transfer for risk management purposes. In a trading system, conversions happen fast. We use the product to handle fast transactions with low latency."

"We can integrate it with any data sources as well."

"The solution's ROI is excellent."

"The most valuable aspects of this solution are the fast caching and improved performance to the database"

"The benefits of data compression in Oracle Database In-Memory are great because we are using data, and it saves a lot regarding sizing."

"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."

More Oracle Database In-Memory pros

Cons

"The solution should have a more user-friendly user interface."

"The solution is quite expensive."

"Oracle Database In-Memory could improve by better supporting generative AI challenges, such as hallucination management."

"Oracle Database In-Memory appliance-based solutions can be restrictive for some applications, as they may require more flexibility in the database design to be tuned and sized to the customer's needs."

"It would be good if Oracle could reduce downtime when transferring from non-In-Memory to In-Memory."

"Oracle should include column store or advanced query optimization so a database can be optimized by enabling analytic queries to run faster."

"I would like Oracle Database In-Memory to include a data replication feature."

"Technical support is below our expectations currently. It could be improved."

"Lacks sufficient integration with other tools."

More Oracle Database In-Memory cons

Pricing and Cost Advice

Information not available

"Database In-Memory is priced a bit higher than its competitors like Microsoft."

"The platform's licensing cost needs improvement."

"There is a need to make a yearly payment towards the licensing costs, after which there is any to pay towards the support cost attached to the solution."

"The solution's pricing is high."

"It's quite costly and it comes with a fixed price."

"I rate the pricing a zero out of ten because Database In-Memory is too costly."

"The pricing is pretty good so I rate it an eight out of ten."

"Oracle Database In-Memory is expensive."

More Oracle Database In-Memory pricing and cost advice

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Top Industries

By visitors reading reviews

Financial Services Firm

42%

Computer Software Company

Comms Service Provider

Energy/Utilities Company

Financial Services Firm

19%

Comms Service Provider

Manufacturing Company

Pharma/Biotech Company

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

No data available

By reviewers
Company Size	Count
Small Business	6
Midsize Enterprise	4
Large Enterprise	23

Questions from the Community

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What do you like most about Oracle Database In-Memory?

We can integrate it with any data sources as well.

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What is your experience regarding pricing and costs for Oracle Database In-Memory?

The pricing for Oracle Database In-Memory is more affordable.

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What needs improvement with Oracle Database In-Memory?

I currently don't know how Oracle Database In-Memory has benefited my organization. We recently received this query from our high management to use this In-Memory function, so we are currently in p...

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Comparisons

SingleStore vs kdb+

Compared 23% of the time

Oracle Database vs kdb+

Compared 20% of the time

SQL Server vs kdb+

Compared 20% of the time

MariaDB vs kdb+

Compared 20% of the time

Kinetica vs kdb+

Compared 16% of the time

More kdb+ Competitors

SAP HANA vs Oracle Database In-Memory

Compared 13% of the time

DuckDB vs Oracle Database In-Memory

Compared 11% of the time

SQL Server vs Oracle Database In-Memory

Compared 10% of the time

Progress OpenEdge RDBMS vs Oracle Database In-Memory

Compared 8% of the time

Druid vs Oracle Database In-Memory

Compared 7% of the time

More Oracle Database In-Memory Competitors

Product Reports

Buyer's Guide

Relational Databases Tools

November 2025

Download kdb+ product report

Buyer's Guide

Oracle Database In-Memory

December 2025

Download Oracle Database In-Memory product report

Overview

Kx is the world leader in high-performance, in-memory computing, streaming analytics and operational intelligence. The company’s focus is on delivering the best possible performance and flexibility for high-volume, data-intensive analytics and applications. Kx software includes the time-series database kdb+ with a built-in programming language called q, and a robust suite of visualization tools built on top of the database platform providing business intelligence for all users.

Kx Systems

Oracle Database In-Memory transparently accelerates analytics by orders of magnitude while simultaneously speeding up mixed-workload OLTP. With Oracle Database In-Memory, users get immediate answers to business questions that previously took hours.

Oracle Database In-Memory delivers leading-edge in-memory performance without the need to restrict functionality, or accept compromises, complexity and risk. Deploying Oracle Database In-Memory with any existing Oracle Database compatible application is as easy as flipping a switch - no application changes are required. Oracle Database In-Memory is fully integrated with the Oracle Database’s renowned scale-up, scale-out, storage tiering, availability, and security technologies making it the most industrialstrength offering on the market.

The ability to easily perform real-time data analysis together with real-time transaction processing on all existing applications enables organizations to transform into Real-Time Enterprises that quickly make data-driven decisions, respond instantly to customer demands, and continuously optimize all key processes.

For more information on Oracle Database In-Memory, visit Oracle.com

Oracle

Sample Customers

UniCredit, AIRBUS

Shanghai Customs

Buyer's Guide

Relational Databases Tools

November 2025

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