<Context path="/servlets-examples" docBase="servlets-examples"
        debug="5" reloadable="true" crossContext="true">
  <Resource name="jdbc/MyDataSource" auth="Container"
              type="javax.sql.DataSource" driverClassName="oracle.jdbc.driver.OracleDriver"
              url="jdbc:oracle:thin:@//server:1521/orcl"
              username="system" password="tiger" maxActive="20" maxIdle="10"
              maxWait="-1"/> 

</Context>