Red Hat Training

A Red Hat training course is available for JBoss Enterprise Application Platform Common Criteria Certification

Chapter 13. Datasource Configuration

Warning

The default persistence configuration works out of the box with Hypersonic (HSQLDB) so that the JBoss Enterprise Platforms are able to run "out of the box". However, Hypersonic is not supported in production and should not be used in a production environment.
Known issues with the Hypersonic Database include:
  • no transaction isolation
  • thread and socket leaks (connection.close() does not tidy up resources)
  • persistence quality (logs commonly become corrupted after a failure, preventing automatic recovery)
  • database corruption
  • stability under load (database processes cease when dealing with too much data)
  • not viable in clustered environments
Check the "Using Other Databases" chapter of the Getting Started Guide for assistance.
Datasources are defined inside a <datasources> element. The exact element depends on the type of datasource required.

13.1. Types of Datasources

Datasource Definitions

<no-tx-datasource>
Does not take part in JTA transactions. The java.sql.Driver is used.
<local-tx-datasource>
Does not support two phase commit. The java.sql.Driver is used. Suitable for a single database or a non-XA-aware resource.
<xa-datasource>
Supports two phase commit. The javax.sql.XADataSource driver is used.