Persistence.xml with JTA AND RESOURCE_LOCAL units, configured in their own way

persistence.xml

<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.1"
    xmlns="http://xmlns.jcp.org/xml/ns/persistence"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/persistence
                        http://xmlns.jcp.org/xml/ns/persistence/persistence_2_1.xsd">


    <!-- JTA based persistence unit -->
    <persistence-unit name="umaPu" transaction-type="JTA">
    
    	<!-- the JNDI name of the data source for this persistence unit -->
    	<!-- it's defined in a -ds.xml file next to this one -->
		<jta-data-source>java:jboss/datasources/umaDS</jta-data-source>
		
        <!-- list of classes we want to manage with JPA -->
        <class>edu.codespring.uma.backend.model.User</class>
        <class>edu.codespring.uma.backend.model.Role</class>

        <!-- only custom configs of jpa -->
        <properties>
            <!-- <property name="javax.persistence.schema-generation.database.action"
                value="drop-and-create" /> -->
            <property name="hibernate.show_sql" value="true"/>
        </properties>

    </persistence-unit>
    
    
	<!-- local persistence unit -->
    <persistence-unit name="umaPuLocal" transaction-type="RESOURCE_LOCAL">

        <!-- list of classes we want to manage with JPA -->
        <class>edu.codespring.uma.backend.model.User</class>
        <class>edu.codespring.uma.backend.model.Role</class>

        <!-- configs of jpa, like driver class, server URL and credentials -->
        <properties>
            <property name="javax.persistence.jdbc.driver" value="org.h2.Driver" />
            <property name="javax.persistence.jdbc.url" value="jdbc:h2:mem:uma;DB_CLOSE_DELAY=-1" />
            <property name="javax.persistence.jdbc.user" value="sa" />
            <property name="javax.persistence.jdbc.password" value="" />
            <property name="javax.persistence.schema-generation.database.action"
                value="create" />
            <property name="hibernate.show_sql" value="true"/>
        </properties>

    </persistence-unit>
</persistence>

uma-ds.xml

<?xml version="1.0" encoding="UTF-8"?>
<datasources>

	<!-- JTA datasource for EE deployment -->
	<datasource jndi-name="java:jboss/datasources/umaDS"
				pool-name="umaDS"
				enabled="true"
				use-java-context="true">

		<!-- a driver with this name must exist in WildFly's configuration -->
		<!-- more info here: https://synaptiklabs.com/posts/adding-the-mysql-jdbc-driver-into-wildfly/ -->				
		<driver>h2</driver>
		
		<connection-url>
			jdbc:h2:mem:uma;DB_CLOSE_DELAY=-1
		</connection-url>
		<security>
			<user-name>sa</user-name>
			<password></password>
		</security>
		
	</datasource>
	
</datasources>