proxool--高並發異常：We are already in the process of making 11 connections and the number of simultaneous，simultaneous

proxool--高並發異常：We are already in the process of making 11 connections and the number of simultaneous，simultaneous

異常：

Caused by: java.sql.SQLException: We are already in the process of making 11 connections and the number of simultaneous builds has been throttled to 10

解決方案：

在proxool.xml中增加：

<simultaneous-build-throttle>20</simultaneous-build-throttle>

預設

<simultaneous-build-throttle>10</simultaneous-build-throttle>

simultaneous-build-throttle:  這是我們可一次建立的最大串連數。那就是新增的串連請求,但還沒有可供使用的串連。由於串連可以使用多線程,在有限的時間之間建立聯絡從而帶來可用串連，但是我們需要通過一些方式確認一些線程並不是立即響應串連請求的，預設是10。

更多詳見：http://www.cnblogs.com/shiyangxt/archive/2009/03/28/1424145.html

參考：http://blog.csdn.net/swandragon/article/details/4738626