Tomcat8.5配置
maxTotal="30" maxActive="30" maxIdle="10" minIdle="5" maxWait="100000" initialSize="5" testWhileIdle="true" testOnBorrow="true" testOnReturn="false" validationQuery="SELECT 1 FROM SYSIBM.DUAL" validationInterval="30000"
timeBetweenEvictionRunsMillis="30000"
参考链接:https://blog.csdn.net/zougen/article/details/85046958