proxool错误，需要修改相关配置

今天去一个客户现场，解决人家占用带宽很严重问题。

经过多种监控手段

1、数据库连接池有问题。

2、日志文件太大。

3、数据库oracle安装在32位环境，性能无法优化。

这里说明一下为何会占用大量带宽:

页面显示信息，是通过后台传递数据到前台页面渲染，然后显示导致的。其实这些数据这么大，为啥不生成静态页面，前段页面进行引用啦。这样性能就会好很多。

具体修改proxool数据库配置如下：

proxool数据源，需要添加如下配置

                   <propertyname="minimumConnectionCount" value="5" />

                   <propertyname="maximumConnectionCount" value="400" />

                   <propertyname="prototypeCount" value="10" />

                   <propertyname="trace" value="true" />

                   <propertyname="delegateProperties" value=" foo=5" />

                   <propertyname="houseKeepingSleepTime" value="30000" />

                   <propertyname="simultaneousBuildThrottle" value="400" />

        <propertyname="maximumActiveTime" value="7200000" />

prototypeCount   一旦发现空闲的连接数没达到该值将建链 
simultaneousBuildThrottle    一次建链的数量。 
maximumConnectionCount  最大的数据库连接数 
minimumConnectionCount  最小的数据库连接数
maximumActiveTime    如果houseKeepingSleepTime检测到某个线程的活动时间大于这个数值.它将会杀掉这个线程.所以确认一下你的服务器的带宽.然后定一个合适的值.默认是5分钟. 
houseKeepingSleepTime   proxool自动侦察各个连接状态的时间间隔(毫秒),侦察到空闲的连接就马上回收,超时的销毁 
overloadWithoutRefusalLifetime   满负载时，等待的时长 
trace   是否启用日志跟综 

如果没有添加的会报很多错误：

错误日志3：

2013-08-30 11:01:15, 384 Could not get JDBCConnection; nested exception is java.sql.SQLException: We are already in theprocess of making 11 connections and the number of simultaneous builds has beenthrottled to 10

org.springframework.jdbc.CannotGetJdbcConnectionException:Could not get JDBC Connection; nested exception is java.sql.SQLException: Weare already in the process of making 11 connections and the number ofsimultaneous builds has been throttled to 10

Could not get JDBC Connection; nestedexception is java.sql.SQLException: We are already in the process of making 11connections and the number of simultaneous builds has been throttled to 10

org.springframework.jdbc.CannotGetJdbcConnectionException:Could not get JDBC Connection; nested exception is java.sql.SQLException: Weare already in the process of making 11 connections and the number ofsimultaneous builds has been throttled to 10

Caused by: java.sql.SQLException: We arealready in the process of making 11 connections and the number of simultaneousbuilds has been throttled to 10