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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
2nd
Average Rating
8.8
Reviews Sentiment
7.4
Number of Reviews
32
Ranking in other categories
Relational Databases Tools (9th)
 

Mindshare comparison

As of October 2025, in the Embedded Database category, the mindshare of DuckDB is 12.4%, up from 8.5% compared to the previous year. The mindshare of Oracle Database In-Memory is 10.1%, down from 11.1% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Embedded Database Market Share Distribution
ProductMarket Share (%)
Oracle Database In-Memory10.1%
DuckDB12.4%
Other77.5%
Embedded Database
 

Featured Reviews

AM
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.
Laksiri Bala - PeerSpot reviewer
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.

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 solution's ROI is excellent."
"Security is the most valuable feature."
"The scalability is very good."
"The most valuable aspects of this solution are the fast caching and improved performance to the database"
"The scalability of the solution is very good. It's able to support large amounts of data."
"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 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 efficiently handles low-code data and supports read-and-write operations for clustering."
 

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."
"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."
"The solution should move to the new way of writing software code with AI that is intelligent and learns."
"Lacks sufficient integration with other tools."
"The platform’s pricing needs improvement."
"The high cost of the product is an area of concern where improvements are required."
"It would be good if Oracle could reduce downtime when transferring from non-In-Memory to In-Memory."
"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."
"We often have to find solutions on our own through the support site, so there's room for improvement in this regard."
 

Pricing and Cost Advice

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

By visitors reading reviews
Computer Software Company
15%
Financial Services Firm
11%
Manufacturing Company
8%
Government
7%
Financial Services Firm
19%
Computer Software Company
8%
Comms Service Provider
7%
Manufacturing Company
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
By reviewers
Company SizeCount
Small Business6
Midsize Enterprise4
Large Enterprise22
 

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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