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Keycloak vs Oracle Database

Keycloak logo

Keycloak

Developer Tools

Open-source identity and access management server.

From
Free
Free plan
Yes
Visit KeycloakFull review
Oracle Database logo

Oracle Database

Databases

From
Free
Free plan
Yes
Visit Oracle DatabaseFull review

The short version

  • Keycloak is an open-source IAM platform supporting OpenID Connect, OAuth 2; Oracle Database is a multi-model database management system produced.
  • Keycloak is free; Oracle Database starts at $47500/mo.
  • Where Keycloak falls short: requires self-hosted deployment and operational expertise to install, configure and maintain.
  • Where Oracle Database falls short: high licensing costs for Enterprise Edition with option packs potentially doubling the effective per-processor cost.
  • Prices and features on this page were last checked on 13 November 2026.

Where they differ

Only the attributes on which Keycloak and Oracle Database actually diverge.

Attributes where Keycloak and Oracle Database differ
AttributeKeycloakOracle Database
PlatformsSelf-hosted, Linux, Windows, APISelf-hosted, Web, Linux, Windows
CategoryDeveloper ToolsDatabases

Identical on both: starting price (Free), free tier (Yes).

Not yet recorded: pricing model for Oracle Database, founded for Keycloak.

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Keycloak

Nothing recorded that Oracle Database does not also cover.

Only in Oracle Database

  • PL/SQL
  • Real Application Clusters
  • Data Guard
  • Advanced Compression
  • Partitioning
  • In-memory Database
  • Multitenant Architecture
  • Oracle Cloud

What people use each for

The jobs each tool is most often brought in to do.

Keycloak

  • Organisations requiring self-hosted identity infrastructure for compliance or data residencynot Oracle Database
  • Companies with existing LDAP/Active Directory systems needing federated authenticationnot Oracle Database
  • Open-source projects and communities requiring free IAM without licensing costsnot Oracle Database
  • Enterprises building custom identity workflows requiring fine-grained authorisationnot Oracle Database
  • Teams with sufficient operational expertise to manage infrastructurenot Oracle Database

Oracle Database

  • Transaction processingnot Keycloak
  • Data storagenot Keycloak
  • Application backendnot Keycloak
  • Reportingnot Keycloak
  • Data analyticsnot Keycloak

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Keycloak

  • Requires self-hosted deployment and operational expertise to install, configure and maintain
  • No managed cloud option provided by Red Hat; organisations must operate infrastructure themselves or use third-party distributions
  • Clustering and high-availability configurations require additional operational knowledge
  • Community support only; commercial support requires third-party vendors or distributions

Oracle Database

  • High licensing costs for Enterprise Edition with option packs potentially doubling the effective per-processor cost
  • Requires skilled database administrators for proper setup, configuration, and maintenance
  • High hardware requirements increase infrastructure costs; less suitable for resource-constrained environments

Pricing, plan by plan

Keycloak

Free
  • Open-sourceFree
    • Full platform functionality
    • Self-hosted deployment
    • Community support

Oracle Database

Free

No published plan breakdown. See the Oracle Database review.

Which should you pick?

Choose Keycloak if

  • You want to start without paying.
  • You work on Self-hosted, Linux, Windows, API.
Keycloak review

Choose Oracle Database if

  • You need pl/sql.
  • You want to start without paying.
  • You work on Self-hosted, Web, Linux, Windows.
  • You also want real application clusters.
Oracle Database review

Questions people ask

Is Keycloak or Oracle Database better?
Neither clearly leads. Keycloak starts at Free and Oracle Database at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Keycloak or Oracle Database?
Keycloak starts at Free and Oracle Database at Free.
Does Keycloak or Oracle Database run on more platforms?
Keycloak runs on Self-hosted, Linux, Windows, API. Oracle Database runs on Self-hosted, Web, Linux, Windows.
Can I use Keycloak for free?
Both have a free tier, so you can try either at no cost before committing.
What is Keycloak best used for?
Keycloak is most often used for organisations requiring self-hosted identity infrastructure for compliance or data residency, companies with existing ldap/active directory systems needing federated authentication, open-source projects and communities requiring free iam without licensing costs, enterprises building custom identity workflows requiring fine-grained authorisation. Of those, organisations requiring self-hosted identity infrastructure for compliance or data residency and companies with existing ldap/active directory systems needing federated authentication are not what Oracle Database is typically brought in for.
What can Keycloak do that Oracle Database cannot?
Oracle Database covers PL/SQL, Real Application Clusters, Data Guard, Advanced Compression.

Answered from the vendors’ own pages

Keycloak: What protocols does Keycloak support?

Keycloak supports OpenID Connect, OAuth 2.0 and SAML 2.0 protocols for authentication and authorisation.

Source
Oracle Database: What is the licensing cost of Oracle Database Enterprise Edition?

Oracle Database Enterprise Edition is priced at 47,500 USD per processor as of April 2026. Named User Plus licensing costs 950 USD per user. Pricing varies based on licensing metric chosen.

Source
Keycloak: Can Keycloak integrate with existing user directories?

Yes. Keycloak supports user federation with LDAP and Active Directory systems, allowing organisations to leverage existing user directories.

Source
Oracle Database: Does Oracle Database offer a free tier or trial?

Oracle Database offers Oracle Database Free Edition, a no-cost version for development and testing. However, no free trial is available for paid editions.

Source
Keycloak: Is Keycloak free?

Yes. Keycloak is fully open-source and free to deploy and use. No licensing fees are required.

Source
Oracle Database: What are the deployment options for Oracle Database?

Oracle Database can be deployed on premises or through Oracle Cloud Infrastructure. Pricing and features vary based on deployment model selected.

Source
Oracle Database: What database management capabilities does Oracle Database provide?

Oracle Database is a converged, multi-model database management system offering in-memory computing, NoSQL, and MySQL database options with comprehensive data management and security features.

Source
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