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Dameng (DM) vs openGauss

Dameng (DM): China's leading home-grown RDBMS; DM9 (2026) adds distributed, HTAP and AI features. openGauss: Huawei-originated open-source RDBMS forked from PostgreSQL, with in-memory and column engines.

key differences

  • Licensing: Dameng (DM) is proprietary (Proprietary commercial license); openGauss is open source (permissive) (Mulan Permissive Software License v2).
  • Horizontal scaling is addon in Dameng (DM) and none in openGauss.
  • Only openGauss has vector search, geospatial, in-memory.

choose dameng for

  • +Replacing Oracle in government and state-owned enterprises
  • +Power-grid and energy management systems
  • +Financial back-office systems on domestic infrastructure

best at · OLTP, OLAP, HTAP

choose opengauss for

  • +Chinese banking and telecom core systems
  • +Domestic-database replacements for Oracle in China
  • +HTAP workloads mixing row and column tables
  • +On-prem deployments on ARM servers

best at · OLTP, HTAP, Vector search

Dameng (DM)China's leading home-grown RDBMS; DM9 (2026) adds distributed, HTAP and AI features.
openGaussHuawei-originated open-source RDBMS forked from PostgreSQL, with in-memory and column engines.
overview
Primary model
Relational
Relational
Also supports
Columnar / OLAP, Document
Columnar / OLAP, Vector, Document
Type
Database engine
Database engine
Status
Active
Active
Developer
Wuhan Dameng Database Co., Ltd.
openGauss Community (Huawei-led)
First release
1988
2020
Latest version
DM9 (Apr 22, 2026)
7.0.0 LTS (Sep 2026)
License
ProprietaryProprietary commercial license
Open source (permissive)Mulan Permissive Software License v2
Free tier
✓
✓
popularity
WhichDB Score
6.7
6.7
Rank
#355
#357
GitHub stars
–
795
Stack Overflow questions
–
–
scale & guarantees
Comfortable data size
Large (≤ 1 PB)
Large (≤ 1 PB)
Horizontal scaling
Addon
None
Multi-region
Read replicas
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, In memory
deployment
Self-hosted
✓
✓
Vendor-managed cloud
—
—
Serverless
—
—
Embedded
—
—
Edge
—
—
Clouds
–
Huawei 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, DMSQL (PL/SQL-compatible)
SQL, PL/pgSQL
Client languages
Java, C, C#, Python, Go, PHP
Java, C, Python, Go, C#
Best for
OLTP, OLAP, HTAP, Warehouse
OLTP, HTAP, Vector search
Add more to this comparisonNot sure either fits? Try smart match

Dameng (DM) vs openGauss: FAQ

What is the difference between Dameng (DM) and openGauss?

Dameng (DM): China's leading home-grown RDBMS; DM9 (2026) adds distributed, HTAP and AI features. openGauss: Huawei-originated open-source RDBMS forked from PostgreSQL, with in-memory and column engines. Licensing: Dameng (DM) is proprietary (Proprietary commercial license); openGauss is open source (permissive) (Mulan Permissive Software License v2). Horizontal scaling is addon in Dameng (DM) and none in openGauss. Only openGauss has vector search, geospatial, in-memory.

When should I choose Dameng (DM) over openGauss?

Choose Dameng (DM) for replacing Oracle in government and state-owned enterprises; power-grid and energy management systems; and financial back-office systems on domestic infrastructure. Choose openGauss for chinese banking and telecom core systems; domestic-database replacements for Oracle in China; and HTAP workloads mixing row and column tables.

Is Dameng (DM) or openGauss more popular?

Dameng (DM) ranks #355 on the WhichDB Score (6.7/100) and openGauss ranks #357 (6.7/100). Popularity is not fit: check the requirements that matter for your project.

Are Dameng (DM) and openGauss open source?

No. Dameng (DM) is proprietary, closed-source software. Yes. openGauss is open source. License: Mulan Permissive Software License v2.