Sun GlassFish Enterprise Server v2.1.1 Deployment Planning Guide


Java EE applications’ need for session persistence was previously described in Session Persistence. The Application Server uses the high-availability database (HADB) as a highly available session store. HADB is included with the Sun GlassFish Enterprise Server with HADB, but in deployment can be run on separate hosts. HADB provides a highly available data store for HTTP session and stateful session bean data.

The advantages of this decoupled architecture include:

Note –

HADB is optimized for use by Application Server and is not meant to be used by applications as a general purpose database.

For HADB hardware and network system requirements, seeHardware and Software Requirements in Sun GlassFish Enterprise Server v2.1.1 Release Notes.