whichdb
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Oracle TimesTen vs solidDB

Oracle TimesTen: Oracle's in-memory relational database: microsecond SQL, PL/SQL, and a cache tier for Oracle Database. solidDB: Low-latency in-memory plus on-disk SQL database with HotStandby failover, sold today by UNICOM.

key differences

  • Horizontal scaling is native in Oracle TimesTen and manual in solidDB.
  • Only Oracle TimesTen has materialized views.
  • Only solidDB has vector search, json, triggers.

choose oracle-timesten for

  • +Telecom online charging and policy control
  • +Trading and market-data applications
  • +Real-time fraud and authorisation checks
  • +In-memory cache tier in front of Oracle Database

best at · OLTP, Cache, Real-time analytics

choose soliddb for

  • +Telecom and network equipment control planes
  • +Embedded real-time data management in appliances
  • +Low-latency OLTP with hot-standby failover

best at · OLTP, Embedded, Cache

Oracle TimesTenOracle's in-memory relational database: microsecond SQL, PL/SQL, and a cache tier for Oracle Database.
solidDBLow-latency in-memory plus on-disk SQL database with HotStandby failover, sold today by UNICOM.
overview
Primary model
Relational
Relational
Also supports
–
Vector
Type
Database engine
Database engine
Status
Active
Active
Developer
Oracle Corporation
UNICOM Systems (UNICOM Global)
First release
1998
1992
Latest version
26.1.1 (Apr 2026)
201.0 (Feb 2025)
License
ProprietaryProprietary commercial license
ProprietaryProprietary commercial license
Free tier
—
—
popularity
WhichDB Score
9.5
4.7
Rank
#310
#398
GitHub stars
–
–
Stack Overflow questions
76
–
scale & guarantees
Comfortable data size
Medium (≤ 10 TB)
Medium (≤ 10 TB)
Horizontal scaling
Native
Manual
Multi-region
Read replicas
Read replicas
ACID
Full
Full
Consistency
Strong
Strong
Schema
Strict
Strict
Architecture
In memory, Distributed, Primary replica, Embedded
In memory, Primary replica, Embedded, Client server
deployment
Self-hosted
✓
✓
Vendor-managed cloud
—
—
Serverless
—
—
Embedded
✓
✓
Edge
—
—
Clouds
–
–
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
Client languages
C, C++, Java, Python, JavaScript
C, C++, Java
Best for
OLTP, Cache, Real-time analytics, Tick data
OLTP, Embedded, Cache
Add more to this comparisonNot sure either fits? Try smart match

Oracle TimesTen vs solidDB: FAQ

What is the difference between Oracle TimesTen and solidDB?

Oracle TimesTen: Oracle's in-memory relational database: microsecond SQL, PL/SQL, and a cache tier for Oracle Database. solidDB: Low-latency in-memory plus on-disk SQL database with HotStandby failover, sold today by UNICOM. Horizontal scaling is native in Oracle TimesTen and manual in solidDB. Only Oracle TimesTen has materialized views. Only solidDB has vector search, json, triggers.

When should I choose Oracle TimesTen over solidDB?

Choose Oracle TimesTen for telecom online charging and policy control; trading and market-data applications; and real-time fraud and authorisation checks. Choose solidDB for telecom and network equipment control planes; embedded real-time data management in appliances; and low-latency OLTP with hot-standby failover.

Is Oracle TimesTen or solidDB more popular?

Oracle TimesTen ranks #310 on the WhichDB Score (9.5/100) and solidDB ranks #398 (4.7/100). Popularity is not fit: check the requirements that matter for your project.

Are Oracle TimesTen and solidDB open source?

No. Oracle TimesTen is proprietary, closed-source software. No. solidDB is proprietary, closed-source software.