13:56:51,485 ERROR [org.jboss.as.controller.management-operation] (Controller Boot Thread) WFLYCTL0013: Operation ("add") failed - address: ([("subsystem" => "transactions")]) - failure description: {"WFLYCTL0080: Failed services" => {"jboss.txn.ArjunaRecoveryManager" => "org.jboss.msc.service.StartException in service jboss.txn.ArjunaRecoveryManager: WFLYTX0005: Recovery manager create failed
    Caused by: java.lang.NullPointerException"}}

        <subsystem xmlns="urn:jboss:domain:datasources:4.0">
            <datasources>
                <datasource jndi-name="java:jboss/datasources/ExampleDS" pool-name="ExampleDS" enabled="true" use-java-context="true">
                    <connection-url>jdbc:h2:mem:test;DB_CLOSE_DELAY=-1;DB_CLOSE_ON_EXIT=FALSE</connection-url>
                    <driver>h2</driver>
                    <security>
                        <user-name>sa</user-name>
                        <password>sa</password>
                    </security>
                </datasource>
                <datasource jta="false" jndi-name="java:jboss/datasources/jdbc-store" pool-name="JDBCObjectStore" enabled="true" use-java-context="true">
                    <connection-url>jdbc:mariadb://db22.mw.lab.eng.bos.redhat.com:3306/dballo17</connection-url>
                    <driver>module_mariadb.jar</driver>
                    <security>
                        <user-name>dballo17</user-name>
                        <password>dballo17</password>
                    </security>
                </datasource>
                <drivers>
                    <driver name="h2" module="com.h2database.h2">
                        <xa-datasource-class&gt;org.h2.jdbcx.JdbcDataSource</xa-datasource-class&gt;
                    </driver>
                    <driver name="module_mariadb.jar" module="mariadb_jar"/>
                </drivers>
            </datasources>
        </subsystem>

        <subsystem xmlns="urn:jboss:domain:transactions:3.0">
            <core-environment>
                <process-id>
                    <uuid/>
                </process-id>
            </core-environment>
            <recovery-environment socket-binding="txn-recovery-environment" status-socket-binding="txn-status-manager"/>
            <coordinator-environment enable-tsm-status="true"/>
            <jdbc-store datasource-jndi-name="java:jboss/datasources/jdbc-store"/>
        </subsystem>