Oracle Database In-Memory vs kdb+ comparison

Kx Systems and Oracle are both solutions in the Relational Databases Tools category. Kx Systems is ranked #25 with an average rating of 9.0, while Oracle is ranked #9 with an average rating of 8.9. Kx Systems holds a 0.5% mindshare in SQL, compared to Oracle’s 1.8% 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

344 Views
282 Comparison Views

100% willing to recommend

Oracle Database In-Memory

Read 32 Oracle Database In-Memory reviews

1,275 Views
880 Comparison Views

100% willing to recommend

kdb+

Oracle Database In-Memory

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Executive Summary

We performed a comparison between kdb+ and Oracle Database In-Memory 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: August 2025).

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Relational Databases Tools

August 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

25th

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

9th

Average Rating

8.8

Reviews Sentiment

7.6

Number of Reviews

Ranking in other categories

Embedded Database (2nd)

Mindshare comparison

As of September 2025, in the Relational Databases Tools category, the mindshare of kdb+ is 0.5%, up from 0.3% compared to the previous year. The mindshare of Oracle Database In-Memory is 1.8%, up from 1.2% 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	1.8%
kdb+	0.5%
Other	97.7%

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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Laksiri Bala

DB Architect / Consultant at Virtusa Global

Faster processing and improved memory operations have enhanced transaction and analytics efficiency

The valuable features of Oracle Database In-Memory include its capability to bypass disk storage for faster memory operations, which is critical for transactions and analytics. It also offers specific memory areas, like in-memory cache, that act as intermediaries between disk and buffer cache. This feature helps organizations handle real-time memory requirements effectively.

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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+."

"The solution is very fast."

"The solution's most valuable feature is its performance optimization within our hardware environment."

"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."

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

"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."

"The solution's ROI is excellent."

"It efficiently handles low-code data and supports read-and-write operations for clustering."

"We find the dashboard and the speed of data processing very valuable in Oracle Database In-Memory."

More Oracle Database In-Memory pros

Cons

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

"Lacks sufficient integration with other tools."

"The pricing could be improved. It would ideal if it was more reasonable."

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

"The high cost of the product is an area of concern where improvements are required."

"The dashboard requires some refreshment or configuration improvements."

"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."

"They should lower the price. My customers think that it's too expensive."

"The solution is quite expensive."

More Oracle Database In-Memory cons

Pricing and Cost Advice

Information not available

"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."

"The product is expensive."

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

"The platform's licensing cost needs improvement."

"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."

More Oracle Database In-Memory pricing and cost advice

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Top Industries

By visitors reading reviews

Financial Services Firm

40%

Retailer

Energy/Utilities Company

Computer Software Company

Financial Services Firm

19%

Computer Software Company

Comms Service Provider

Manufacturing 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	21

Questions from the Community

What do you like most about kdb+?

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

See all answers

What needs improvement with kdb+?

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

See all answers

What is your primary use case for kdb+?

See all answers

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

We can integrate it with any data sources as well.

See all answers

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

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

See all answers

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...

See all answers

Comparisons

SQL Server vs kdb+

Compared 51% of the time

Oracle Database vs kdb+

Compared 49% of the time

More kdb+ Competitors

SAP HANA vs Oracle Database In-Memory

Compared 17% of the time

DuckDB vs Oracle Database In-Memory

Compared 13% of the time

SQL Server vs Oracle Database In-Memory

Compared 12% of the time

Progress OpenEdge RDBMS vs Oracle Database In-Memory

Compared 9% of the time

SQLite vs Oracle Database In-Memory

Compared 8% of the time

More Oracle Database In-Memory Competitors

Product Reports

Buyer's Guide

Relational Databases Tools

August 2025

Download kdb+ product report

Buyer's Guide

Oracle Database In-Memory

August 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

August 2025

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