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Oracle Database vs PostgreSQL

Oracle Database: The enterprise heavyweight: RAC, Data Guard and a converged engine for SQL, JSON, graph and vectors. PostgreSQL: The extensible, standards-first open-source relational database.

key differences

  • Licensing: Oracle Database is proprietary (Oracle commercial license); PostgreSQL is open source (permissive) (PostgreSQL License).
  • Oracle Database is built for larger datasets (≤ 1 PB) than PostgreSQL (≤ 10 TB).
  • Only Oracle Database has columnar storage, in-memory, encryption at rest, time travel, streaming ingest.

choose oracle-database for

  • +Core banking and payment systems
  • +Packaged ERP back ends (Oracle E-Business Suite, JD Edwards, PeopleSoft)
  • +Telecom billing and subscriber management
  • +Mixed OLTP plus in-database analytics and vector search

best at · OLTP, HTAP, Warehouse

choose postgresql for

  • +General-purpose application backend
  • +SaaS multi-tenant data
  • +Geospatial applications with PostGIS
  • +Semantic search alongside relational data with pgvector

best at · OLTP, Geo, Search

Oracle DatabaseThe enterprise heavyweight: RAC, Data Guard and a converged engine for SQL, JSON, graph and vectors.
PostgreSQLThe extensible, standards-first open-source relational database.
overview
Primary model
Relational
Relational
Also supports
Document, Graph, Vector, Spatial, XML
Document, Spatial
Type
Database engine
Database engine
Status
Active
Active
Developer
Oracle Corporation
PostgreSQL Global Development Group
First release
1979
1996
Latest version
23.26.4 (26ai RU) (Oct 2026)
18.6 (Aug 13, 2026)
License
ProprietaryOracle commercial license
Open source (permissive)PostgreSQL License
Free tier
✓
✓
popularity
WhichDB Score
56.9
93.2
Rank
#17
#1
GitHub stars
–
22.6K
Stack Overflow questions
152.3K
178.8K
scale & guarantees
Comfortable data size
Large (≤ 1 PB)
Medium (≤ 10 TB)
Horizontal scaling
Addon
Addon
Multi-region
Active active
Read replicas
ACID
Full
Full
Consistency
Strong
Strong
Schema
Strict
Strict
Architecture
Client server, Primary replica, Shared storage, Distributed
Single node, Primary replica, Client server
deployment
Self-hosted
✓
✓
Vendor-managed cloud
✓
—
Serverless
—
—
Embedded
—
—
Edge
—
—
Clouds
Oracle Cloud, AWS, Azure, Google Cloud
AWS, Google Cloud, Azure, Oracle Cloud, IBM Cloud, Alibaba Cloud
capabilities
Transactions
✓
✓
Joins
✓
✓
Secondary indexes
✓
✓
Full-text search
✓
✓
Vector search
✓
✓
Geospatial
✓
✓
JSON
✓
✓
Change data capture
✓
✓
Triggers
✓
✓
Stored procedures
✓
✓
Materialized views
✓
✓
TTL / expiry
—
—
Pub/Sub
✓
✓
Columnar storage
✓
—
In-memory
✓
—
Durable persistence
✓
✓
Compression
✓
✓
Encryption at rest
✓
—
Role-based access
✓
✓
Time travel
✓
—
Branching
—
—
Online schema changes
✓
✓
Streaming ingest
✓
—
Offline sync
—
—
Runs in WebAssembly
—
—
interfaces
Query languages
SQL, PL/SQL, SQL/PGQ
SQL, PL/pgSQL
Client languages
Java, Python, JavaScript, C#, Go, C, C++, PHP
C, Java, Python, JavaScript, Go, Rust, C#, Ruby
Best for
OLTP, HTAP, Warehouse, Vector search
OLTP, Geo, Search, Content
Add more to this comparisonNot sure either fits? Try smart match

Oracle Database vs PostgreSQL: FAQ

What is the difference between Oracle Database and PostgreSQL?

Oracle Database: The enterprise heavyweight: RAC, Data Guard and a converged engine for SQL, JSON, graph and vectors. PostgreSQL: The extensible, standards-first open-source relational database. Licensing: Oracle Database is proprietary (Oracle commercial license); PostgreSQL is open source (permissive) (PostgreSQL License). Oracle Database is built for larger datasets (≤ 1 PB) than PostgreSQL (≤ 10 TB). Only Oracle Database has columnar storage, in-memory, encryption at rest, time travel, streaming ingest.

When should I choose Oracle Database over PostgreSQL?

Choose Oracle Database for core banking and payment systems; packaged ERP back ends (Oracle E-Business Suite, JD Edwards, PeopleSoft); and telecom billing and subscriber management. Choose PostgreSQL for general-purpose application backend, SaaS multi-tenant data and geospatial applications with PostGIS.

Is Oracle Database or PostgreSQL more popular?

PostgreSQL ranks #1 on the WhichDB Score (93.2/100) and Oracle Database ranks #17 (56.9/100). Popularity is not fit: check the requirements that matter for your project.

Are Oracle Database and PostgreSQL open source?

No. Oracle Database is proprietary, closed-source software. License: Oracle commercial license. Yes. PostgreSQL is open source. License: PostgreSQL License.