/downloads/api-jdbc-stable.html

    -->

    <datasources>

      <local-tx-datasource>

        <jndi-name>mySQLtest</jndi-name>

        <connection-url>jdbc:mysql://localhost:3306/test</connection-url>

        <driver-class>com.mysql.jdbc.Driver</driver-class>

        <user-name>root</user-name>

        <password>root</password>

     <min-pool-size>5</min-pool-size>

     <max-pool-size>20</max-pool-size>
　　   <exception-sorter-class-name>org.jboss.resource.adapter.jdbc.vendor.MySQLExceptionSorter</exception-sorter-class-name>
        <!-- sql to call when connection is created

        <new-connection-sql>some arbitrary sql</new-connection-sql>

          -->

        <!-- sql to call on an existing pooled connection when it is obtained from pool

        <check-valid-connection-sql>some arbitrary sql</check-valid-connection-sql>

          -->

        <!-- corresponding type-mapping in the standardjbosscmp-jdbc.xml (optional) -->

        <metadata>

           <type-mapping>mySQL</type-mapping>

        </metadata>

      </local-tx-datasource>

    </datasources>