Wildfly standalone config

        <subsystem xmlns="urn:jboss:domain:datasources:4.0">
            <datasources>
                <datasource jndi-name="java:jboss/datasources/ExampleDS" pool-name="ExampleDS">
                    <connection-url>jdbc:h2:mem:test;DB_CLOSE_DELAY=-1</connection-url>
                    <driver>h2</driver>
                    <pool>
                        <min-pool-size>10</min-pool-size>
                        <max-pool-size>20</max-pool-size>
                        <prefill>true</prefill>
                    </pool>
                    <security>
                        <user-name>sa</user-name>
                        <password>sa</password>
                    </security>
                </datasource>
                <datasource jta="true" jndi-name="java:/wad" pool-name="wad" enabled="true" use-ccm="true">
                    <connection-url>jdbc:mysql://localhost:3306/booking</connection-url>
                    <driver-class>com.mysql.jdbc.Driver</driver-class>
                    <driver>WAD.war_com.mysql.jdbc.Driver_5_1</driver>
                    <security>
                        <user-name>radu</user-name>
                        <password>datedreq333</password>
                    </security>
                    <validation>
                        <valid-connection-checker class-name="org.jboss.jca.adapters.jdbc.extensions.mysql.MySQLValidConnectionChecker"/>
                        <background-validation>true</background-validation>
                        <exception-sorter class-name="org.jboss.jca.adapters.jdbc.extensions.mysql.MySQLExceptionSorter"/>
                    </validation>
                </datasource>
                <xa-datasource jndi-name="java:jboss/datasources/ExampleXADS" pool-name="ExampleXADS">
                    <xa-datasource-property name="URL">
                        jdbc:h2:mem:test
                    </xa-datasource-property>
                    <driver>h2</driver>
                    <xa-pool>
                        <min-pool-size>10</min-pool-size>
                        <max-pool-size>20</max-pool-size>
                        <prefill>true</prefill>
                    </xa-pool>
                    <security>
                        <user-name>sa</user-name>
                        <password>sa</password>
                    </security>
                </xa-datasource>
                <drivers>
                    <driver name="h2" module="com.h2database.h2">
                        <xa-datasource-class>org.h2.jdbcx.JdbcDataSource</xa-datasource-class>
                    </driver>
                </drivers>
            </datasources>
        </subsystem>