<datasource jndi-name="java:jboss/datasources/myDS" pool-name="myDS" enabled="true" use-java-context="true">
<connection-url>jdbc:mysql://localhost:3306/mydb</connection-url>
<driver>mysql</driver>
<security>
<user-name>root</user-name>
<password>password</password>
</security>
</datasource>
<persistence-unit name="myPU" transaction-type="JTA">
<jta-data-source>java:jboss/datasources/myDS</jta-data-source>
...
</persistence-unit>
<servlet>
<servlet-name>MyServlet</servlet-name>
<servlet-class>com.example.MyServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>MyServlet</servlet-name>
<url-pattern>/myservlet</url-pattern>
</servlet-mapping>
