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KingbaseES vs OceanBase

KingbaseES: Chinese PostgreSQL-derived RDBMS with Oracle, MySQL and SQL Server compatibility modes. OceanBase: Alipay-proven distributed SQL with MySQL (and Oracle, in Enterprise) compatibility, HTAP and vector search.

key differences

  • Licensing: KingbaseES is proprietary (Proprietary commercial license); OceanBase is open source (permissive) (Apache License 2.0 (Community Edition)).
  • OceanBase is built for larger datasets (Multi-PB) than KingbaseES (≤ 10 TB).
  • Horizontal scaling is addon in KingbaseES and native in OceanBase.
  • Only OceanBase has vector search, geospatial, change data capture, columnar storage, compression.

choose kingbase for

  • +Replacing Oracle in Chinese government systems
  • +Energy and utility enterprise applications
  • +Applications that must run on domestic Chinese hardware and OS

best at · OLTP, Warehouse

choose oceanbase for

  • +Core banking and payment systems
  • +Oracle-to-distributed-SQL migrations
  • +Consolidating many MySQL instances into one multi-tenant cluster
  • +HTAP reporting on live order data

best at · OLTP, HTAP, Real-time analytics

KingbaseESChinese PostgreSQL-derived RDBMS with Oracle, MySQL and SQL Server compatibility modes.
OceanBaseAlipay-proven distributed SQL with MySQL (and Oracle, in Enterprise) compatibility, HTAP and vector search.
overview
Primary model
Relational
Relational
Also supports
Document
Document, Columnar / OLAP, Vector, Spatial
Type
Database engine
Database engine
Status
Active
Active
Developer
CETC Kingbase (中电科金仓)
OceanBase (Ant Group)
First release
1999
2010
Latest version
V9R4C11 (Feb 2025)
5.0.1 CE (Aug 6, 2026)
License
ProprietaryProprietary commercial license
Open source (permissive)Apache License 2.0 (Community Edition)
Free tier
—
✓
popularity
WhichDB Score
0.0
19.4
Rank
#764
#168
GitHub stars
–
10.4K
Stack Overflow questions
–
20
scale & guarantees
Comfortable data size
Medium (≤ 10 TB)
Massive (Multi-PB)
Horizontal scaling
Addon
Native
Multi-region
Read replicas
Active active
ACID
Full
Full
Consistency
Strong
Strong
Schema
Strict
Strict
Architecture
Client server, Primary replica, Shared storage
Distributed, Client server, Single node
deployment
Self-hosted
✓
✓
Vendor-managed cloud
—
✓
Serverless
—
—
Embedded
—
—
Edge
—
—
Clouds
–
AWS, Google Cloud, Azure, Alibaba Cloud, Huawei Cloud, Tencent 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-compatible procedural SQL, PL/pgSQL
SQL, PL/SQL (Enterprise Oracle mode)
Client languages
Java, C, C#, Python, Go
Java, Python, Go, C, JavaScript, C#
Best for
OLTP, Warehouse
OLTP, HTAP, Real-time analytics, Vector search
Add more to this comparisonNot sure either fits? Try smart match

KingbaseES vs OceanBase: FAQ

What is the difference between KingbaseES and OceanBase?

KingbaseES: Chinese PostgreSQL-derived RDBMS with Oracle, MySQL and SQL Server compatibility modes. OceanBase: Alipay-proven distributed SQL with MySQL (and Oracle, in Enterprise) compatibility, HTAP and vector search. Licensing: KingbaseES is proprietary (Proprietary commercial license); OceanBase is open source (permissive) (Apache License 2.0 (Community Edition)). OceanBase is built for larger datasets (Multi-PB) than KingbaseES (≤ 10 TB). Horizontal scaling is addon in KingbaseES and native in OceanBase.

When should I choose KingbaseES over OceanBase?

Choose KingbaseES for replacing Oracle in Chinese government systems; energy and utility enterprise applications; and applications that must run on domestic Chinese hardware and OS. Choose OceanBase for core banking and payment systems; oracle-to-distributed-SQL migrations; and consolidating many MySQL instances into one multi-tenant cluster.

Is KingbaseES or OceanBase more popular?

OceanBase ranks #168 on the WhichDB Score (19.4/100) and KingbaseES ranks #764 (0.0/100). Popularity is not fit: check the requirements that matter for your project.

Are KingbaseES and OceanBase open source?

No. KingbaseES is proprietary, closed-source software. Yes. OceanBase is open source. License: Apache License 2.0 (Community Edition).