<jta-data-source>java:/DefaultDS</jta-data-source>

<properties>
    <property name="javax.persistence.jdbc.driver" value="oracle.jdbc.OracleDriver"/>
    <property name="javax.persistence.jdbc.url" value="jdbc:oracle:thin:@localhost:1521:orcl"/>
    <property name="javax.persistence.jdbc.user" value="scott"/>
    <property name="javax.persistence.jdbc.password" value="tiger"/>
</properties>

<jdbc-data-source>
    <driver>oracle.jdbc.OracleDriver</driver>
    <url>jdbc:oracle:thin:@localhost:1521:orcl</url>
    <user>scott</user>
    <password>tiger</tiger>
</jdbc-data-source>

<properties>
   <property name="hibernate.dialect"
            value="org.hibernate.dialect.HSQLDialect"/>
   <property name="hibernate.hbm2ddl.auto" value="create-drop"/>
</properties>