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DuckDB vs Oracle Database In-Memory 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

DuckDB
Ranking in Embedded Database
5th
Average Rating
9.0
Reviews Sentiment
6.5
Number of Reviews
1
Ranking in other categories
No ranking in other categories
Oracle Database In-Memory
Ranking in Embedded Database
4th
Average Rating
8.8
Reviews Sentiment
7.1
Number of Reviews
33
Ranking in other categories
Relational Databases Tools (9th)
 

Mindshare comparison

As of December 2025, in the Embedded Database category, the mindshare of DuckDB is 12.6%, up from 10.5% compared to the previous year. The mindshare of Oracle Database In-Memory is 9.7%, up from 9.0% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Embedded Database Market Share Distribution
ProductMarket Share (%)
Oracle Database In-Memory9.7%
DuckDB12.6%
Other77.7%
Embedded Database
 

Featured Reviews

AM
Head of Data Science center of excellence at Ameriabank CJSC
Highly efficient data processing, optimizes infrastructure, and offers good integrations
DuckDB is very fast. If we don't have enough memory, we can use swap. For instance, if we use a fast storage space, the system volume in Kubernetes could be a fast swap for DuckDB if we have memory limits. In our framework, DuckDB is five times faster than Spark in some cases. It has an extensive SQL dialect, many SQL Windows functions, and good integration with Polars. We can easily use SQL and Pandas framework in Python to process data.
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

"DuckDB is very fast."
"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."
"I like Oracle because it is a backward-compatible solution."
"Oracle Database In-Memory is a suite of features that improves performance for real-time analytics and mixed workloads."
"The benefits of data compression in Oracle Database In-Memory are great because we are using data, and it saves a lot regarding sizing."
"Security is the most valuable feature."
"The application development is very user-friendly."
"The solution is very fast."
"We have recently deployed our database on cloud with Oracle Database In-Memory; we have a single standby on cloud, and on contingency occasions, we switch over to cloud and use it for four to five months."
 

Cons

"Sometimes we have memory issues that cause job failures, which we don't fully understand why, but we can rerun the jobs without problems."
"The solution is quite expensive."
"It would be good if Oracle could reduce downtime when transferring from non-In-Memory to In-Memory."
"I would like Oracle Database In-Memory to include a data replication feature."
"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."
"The pricing could be improved. It would ideal if it was more reasonable."
"Technical support is below our expectations currently. It could be improved."
"Oracle should include column store or advanced query optimization so a database can be optimized by enabling analytic queries to run faster."
"They should lower the price. My customers think that it's too expensive."
 

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."
"It's quite costly and it comes with a fixed price."
"The platform's licensing cost needs improvement."
"The pricing is pretty good so I rate it an eight out of ten."
"The solution's pricing is high."
"I rate the pricing a zero out of ten because Database In-Memory is too costly."
"The product is expensive."
"Database In-Memory is priced a bit higher than its competitors like Microsoft."
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Top Industries

By visitors reading reviews
Financial Services Firm
13%
Computer Software Company
9%
Manufacturing Company
8%
Comms Service Provider
8%
Financial Services Firm
19%
Comms Service Provider
9%
Manufacturing Company
6%
Pharma/Biotech Company
6%
 

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

What is your experience regarding pricing and costs for DuckDB?
We use the open-source version of DuckDB and don't have costs associated with it. There is a company that provides commercial software, but we use the open-source library, not the services.
What needs improvement with DuckDB?
Sometimes we have memory issues that cause job failures, which we don't fully understand why, but we can rerun the jobs without problems. There were also problems with binary formats in the previou...
What is your primary use case for DuckDB?
We use the concept of a feature store. We need the engine, and we use Feast as our feature store framework to build our feature store. We use the DuckDB engine as a data engine, which helps us move...
What do you like most about Oracle Database In-Memory?
We can integrate it with any data sources as well.
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...
 

Comparisons

 

Overview

 

Sample Customers

Information Not Available
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