standalone.xml(DS part only)

<subsystem xmlns="urn:jboss:domain:datasources:1.0">
            <datasources>

                <datasource jndi-name="java:jboss/datasources/jbpmDS" pool-name="OracleDS" enabled="true" jta="true" use-java-context="true" use-ccm="true">
                  <connection-url>jdbc:oracle:thin:host:1521:sid</connection-url>
                  <driver>oracle</driver>
                  <transaction-isolation>TRANSACTION_READ_COMMITTED</transaction-isolation>
                  <pool>
                    <prefill>true</prefill>
                    <min-pool-size>0</min-pool-size>
                    <max-pool-size>20</max-pool-size>
                  </pool>
                  <security>
                    <user-name>edesjbpm</user-name>
                    <password>edesjbpm</password>
                  </security>
                </datasource>

                <drivers>
                    <driver name="oracle" module="com.oracle.ojdbc6">
                      <xa-datasource-class>oracle.jdbc.OracleDriver</xa-datasource-class>
                    </driver>
                </drivers>

            </datasources>
        </subsystem>