How to configure separate log files for same logger ?

Issue

• I have various datasource with spy tag enable to true like :

<datasources>
                <datasource jta="true" jndi-name="java:jboss/datasources/DB1" pool-name="DB1" enabled="true" use-java-context="true" spy="true">
                <datasource jta="true" jndi-name="java:jboss/datasources/DB2" pool-name="DB2" enabled="true" use-java-context="true" spy="true">
</datasources>

and "only one" logger for all informations from both Datasource:

            <periodic-rotating-file-handler name="JDBCLOG">
                    <formatter>
                         <pattern-formatter pattern="%d{HH:mm:ss,SSS} %-5p [%c] (%t) %s%E%n"/>
                    </formatter>
                    <file relative-to="jboss.server.log.dir" path="jdbclog.log"/>
                    <suffix value=".yyyy-MM-dd"/>
                    <append value="true"/>
            </periodic-rotating-file-handler>

            <logger category="jboss.jdbc.spy" use-parent-handlers="false">
                    <level name="DEBUG"/>
                    <handlers>
                        <handler name="JDBCLOG"/>
                    </handlers>
            </logger>

How to configure separate log files for same logger i.e jdbclog_1.log for DB1 and jdbclog_2.log for DB2 ?