H2 Database Engine

Welcome to H2, the Java SQL database. The main features of H2 are:

  • Very fast, open source, JDBC API
  • Embedded and server modes; in-memory databases
  • Browser based Console application
  • Small footprint: around 2 MB jar file size

Download

Version ${version} (${versionDate})
Download this database Windows Installer (5 MB)
Download this database All Platforms (zip, 8 MB)
All Downloads
   

Support

Stack Overflow (tag H2)

Google Group English, Japanese

For non-technical issues, use:

Features

H2 Derby HSQLDB MySQL PostgreSQL
Pure Java Yes Yes Yes No No
Memory Mode Yes Yes Yes No No
Encrypted Database Yes Yes Yes No No
ODBC Driver Yes No No Yes Yes
Fulltext Search Yes No No Yes Yes
Multi Version Concurrency Yes No Yes Yes Yes
Footprint (embedded) ~2 MB ~3 MB ~1.5 MB — —
Footprint (client) ~500 KB ~600 KB ~1.5 MB ~1 MB ~700 KB

News

Newsfeeds: Full text (Atom) or Header only (RSS).

Email Newsletter: Subscribe to H2 Database News (Google account required) to get informed about new releases. Your email address is only used in this context.

 

Contribute

You can contribute to the development of H2 by sending feedback and bug reports, or translate the H2 Console application (for details, start the H2 Console and select Options / Translate). To donate money, click on the PayPal button below. You will be listed as a supporter: