spring connection pool configuration
<bean id="hikariConfig" class="com.zaxxer.hikari.HikariConfig">
<property name="maximumPoolSize" value="10" />
<property name="minimumPoolSize" value="2" />
<property name="dataSourceClassName"
value="oracle.jdbc.pool.OracleDataSource" />
<property name="dataSourceProperties" ref="props" />
<property name="poolName" value="springHikariCP" />
</bean>
<bean id="dataSource" class="com.zaxxer.hikari.HikariDataSource">
<constructor-arg ref="hikariConfig" />
</bean>
<util:properties id="props" location="classpath:datasource.properties"/>