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OceanBase vs PolarDB-X

OceanBase: Alipay-proven distributed SQL with MySQL (and Oracle, in Enterprise) compatibility, HTAP and vector search. PolarDB-X: Alibaba's open-source, MySQL-compatible shared-nothing distributed SQL with Paxos and columnar indexes.

key differences

  • OceanBase is built for larger datasets (Multi-PB) than PolarDB-X (≤ 1 PB).
  • Only OceanBase has full-text search, vector search, geospatial, triggers, materialized views.
  • Only PolarDB-X has ttl / expiry.

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

choose polardb-x for

  • +Scaling large MySQL e-commerce databases
  • +High-concurrency order and payment systems
  • +Consolidating sharded MySQL into one logical database
  • +Operational analytics via columnar indexes

best at · OLTP, HTAP, Real-time analytics

OceanBaseAlipay-proven distributed SQL with MySQL (and Oracle, in Enterprise) compatibility, HTAP and vector search.
PolarDB-XAlibaba's open-source, MySQL-compatible shared-nothing distributed SQL with Paxos and columnar indexes.
overview
Primary model
Relational
Relational
Also supports
Document, Columnar / OLAP, Vector, Spatial
Document, Columnar / OLAP
Type
Database engine
Database engine
Status
Active
Active
Developer
OceanBase (Ant Group)
Alibaba Cloud
First release
2010
2021
Latest version
5.0.1 CE (Aug 6, 2026)
5.4.21 (Sep 20, 2026)
License
Open source (permissive)Apache License 2.0 (Community Edition)
Open source (permissive)Apache License 2.0
Free tier
✓
—
popularity
WhichDB Score
19.4
5.0
Rank
#168
#391
GitHub stars
10.4K
1.7K
Stack Overflow questions
20
–
scale & guarantees
Comfortable data size
Massive (Multi-PB)
Large (≤ 1 PB)
Horizontal scaling
Native
Native
Multi-region
Active active
Read replicas
ACID
Full
Full
Consistency
Strong
Strong
Schema
Strict
Strict
Architecture
Distributed, Client server, Single node
Distributed, Client server
deployment
Self-hosted
✓
✓
Vendor-managed cloud
✓
✓
Serverless
—
—
Embedded
—
—
Edge
—
—
Clouds
AWS, Google Cloud, Azure, Alibaba Cloud, Huawei Cloud, Tencent 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 (Enterprise Oracle mode)
SQL
Client languages
Java, Python, Go, C, JavaScript, C#
Java, Python, Go, PHP, JavaScript
Best for
OLTP, HTAP, Real-time analytics, Vector search
OLTP, HTAP, Real-time analytics
Add more to this comparisonNot sure either fits? Try smart match

OceanBase vs PolarDB-X: FAQ

What is the difference between OceanBase and PolarDB-X?

OceanBase: Alipay-proven distributed SQL with MySQL (and Oracle, in Enterprise) compatibility, HTAP and vector search. PolarDB-X: Alibaba's open-source, MySQL-compatible shared-nothing distributed SQL with Paxos and columnar indexes. OceanBase is built for larger datasets (Multi-PB) than PolarDB-X (≤ 1 PB). Only OceanBase has full-text search, vector search, geospatial, triggers, materialized views. Only PolarDB-X has ttl / expiry.

When should I choose OceanBase over PolarDB-X?

Choose OceanBase for core banking and payment systems; oracle-to-distributed-SQL migrations; and consolidating many MySQL instances into one multi-tenant cluster. Choose PolarDB-X for scaling large MySQL e-commerce databases; high-concurrency order and payment systems; and consolidating sharded MySQL into one logical database.

Is OceanBase or PolarDB-X more popular?

OceanBase ranks #168 on the WhichDB Score (19.4/100) and PolarDB-X ranks #391 (5.0/100). Popularity is not fit: check the requirements that matter for your project.

Are OceanBase and PolarDB-X open source?

Yes. OceanBase is open source. License: Apache License 2.0 (Community Edition). Yes. PolarDB-X is open source. License: Apache License 2.0.