Tsmbién ya edite el hibernate-config.xml
Código postgres:
Ver original<!-- PostgreSQL configuration.
Uncomment if you want to use PostgreSQL and comment out other database configurations. -->
<property name="connection.url">jdbc:postgresql:xwiki</property>
<property name="connection.username">xwiki</property>
<property name="connection.password">xwiki</property> <!-- xwiki -->
<property name="connection.driver_class">org.postgresql.Driver</property>
<property name="dialect">org.hibernate.dialect.PostgreSQLDialect</property>
<property name="connection.provider_class">com.xpn.xwiki.store.DBCPConnectionProvider</property>
<property name="connection.pool_size">2</property>
<property name="statement_cache.size">2</property>
<mapping resource="xwiki.hbm.xml"/>
<mapping resource="feeds.hbm.xml"/>
<mapping resource="activitystream.hbm.xml"/>