<bean id="messageDao" class="com.foo.dao.springjdbc.MessageDaoSpringJdbcImpl">
    <property name="jdbcTemplate" ref="jdbcTemplate"/>
</bean>

<bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
    <constructor-arg ref="dataSource"/>
</bean>

<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
    <property name="driverClassName" value="oracle.jdbc.driver.OracleDriver"/>
    <property name="url" value="jdbc:oracle:thin:@${db.ip}:${db.port}:${db.sid}"/>
    <property name="username" value="${db.username}"/>
    <property name="password" value="${db.password}"/>
    <property name="validationQuery" value="select 1 from dual"/>
    <property name="testOnBorrow" value="true"/>
    <property name="testWhileIdle" value="true"/>
    <property name="timeBetweenEvictionRunsMillis" value="5000"/>
    <property name="numTestsPerEvictionRun" value="3"/>
    <property name="maxActive" value="1"/>
    <property name="maxIdle" value="3"/>
</bean>