keycloak-datasources.xml

<?xml version='1.0' encoding='UTF-8'?>
<!--  See src/resources/configuration/ReadMe.txt for how the configuration assembly works -->
<config>
    <extension-module>org.jboss.as.connector</extension-module>
    <subsystem xmlns="urn:jboss:domain:datasources:3.0">
        <datasources>
            <datasource jndi-name="java:jboss/datasources/KeycloakDS" pool-name="KeycloakDS" enabled="true" use-java-context="true">
                <connection-url>jdbc:h2:${jboss.server.data.dir}/keycloak;AUTO_SERVER=TRUE</connection-url>
                <driver>h2</driver>
                <security>
                    <user-name>sa</user-name>
                    <password>sa</password>
                </security>
            </datasource>
            <drivers>
                <driver name="h2" module="com.h2database.h2">
                    <xa-datasource-class>org.h2.jdbcx.JdbcDataSource</xa-datasource-class>
                </driver>
            </drivers>
        </datasources>
    </subsystem>
</config>