The default DB configuration uses HSQLDB, a Java Database quite useful for demonstrations.

<component> 

   <key>org.exoplatform.services.database.HibernateService</key>

   <jmx-name>exo-service:type=HibernateService</jmx-name>

   <type>org.exoplatform.services.database.impl.HibernateServiceImpl</type>

   <init-params>

      <properties-param>

         <name>hibernate.properties</name>

         <description>Default Hibernate Service</description>

         <property name="hibernate.show_sql" value="false"/>

         <property name="hibernate.cglib.use_reflection_optimizer" value="true"/>

         <property name="hibernate.connection.url" value="jdbc:hsqldb:file:../temp/data/portal"/>

         <property name="hibernate.connection.driver_class" value="org.hsqldb.jdbcDriver"/>

         <property name="hibernate.connection.autocommit" value="true"/>

         <property name="hibernate.connection.username" value="sa"/>

         <property name="hibernate.connection.password" value=""/>

         <property name="hibernate.dialect" value="org.hibernate.dialect.HSQLDialect"/>

         <property name="hibernate.c3p0.min_size" value="5"/>

         <property name="hibernate.c3p0.max_size" value="20"/>

         <property name="hibernate.c3p0.timeout" value="1800"/>

         <property name="hibernate.c3p0.max_statements" value="50"/>

      </properties-param>

   </init-params>

</component>

In the init parameter section, we define the default hibernate properties including the DB URL, the driver and the credentials in use.

For any portals that configuration can be overridden, depending on the needs of your environment.

Several databases have been tested and can be used in production....which is not the case of HSQLDB, HSQLDB can only be used for development environments and for demonstrations.