Spotter-VM/lxc-apps/sigmah/install/sigmah_conf/persistence.xml

<?xml version="1.0" encoding="UTF-8"?>
<persistence xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd" version="2.0">

	<persistence-unit name="sigmah-dev" transaction-type="RESOURCE_LOCAL">
		<provider>org.hibernate.ejb.HibernatePersistence</provider>
		<properties>

			<property name="hibernate.archive.autodetection" value="class" />

			<!-- Loaded from pom configuration. -->
			<property name="hibernate.dialect" value="org.hibernate.dialect.PostgreSQLDialect" />
			<property name="hibernate.connection.driver_class" value="org.postgresql.Driver" />
			<property name="hibernate.connection.username" value="sigmah" />
			<property name="hibernate.connection.password" value="${SIGMAH_PWD}" />
			<property name="hibernate.connection.url" value="jdbc:postgresql://sigmah-postgres:5432/sigmah" />
			<property name="hibernate.show_sql" value="false" />
			<property name="hibernate.format_sql" value="false" />

			<!-- validate | update | create | create-drop | {empty} -->
			<property name="hibernate.hbm2ddl.auto" value="update" />

			<!-- Important : connection pool. -->
			<property name="hibernate.connection.provider_class" value="org.hibernate.service.jdbc.connections.internal.C3P0ConnectionProvider" />

			<!-- Connection pool configuration. -->
			<!-- https://community.jboss.org/wiki/HowToConfigureTheC3P0ConnectionPool -->
			<!-- http://www.mchange.com/projects/c3p0/ -->
			<property name="hibernate.c3p0.min_size" value="1" />
			<property name="hibernate.c3p0.max_size" value="15" />
			<property name="hibernate.c3p0.max_statements" value="100" />
			<property name="hibernate.c3p0.timeout" value="0" />
			<property name="hibernate.c3p0.acquire_increment" value="1" />
			<property name="hibernate.c3p0.numHelperThreads" value="6" />

		</properties>
	</persistence-unit>

</persistence>