The Thread responsible was named ‘Thread-32′, but the last SQL it performed is unknown because the trace property is not enabled.

問題原因：sql語句運行後。長時間未返回數據，則拋出此異常，此時間再proxool.xml中有配置。例如以下（詳見紅色字體部分）

<proxool>

<alias>liveEpg</alias>

<driver-url>jdbc:mysql://127.0.0.1:3306/liveEpg?useUnicode=true&amp;characterEncoding=UTF-8

</driver-url>

<driver-class>com.mysql.jdbc.Driver</driver-class>

<driver-properties>

<property name="user" value="root" />

<property name="password" value="root" />

</driver-properties>

<maximum-connection-count>30</maximum-connection-count>

<minimum-connection-count>1</minimum-connection-count>

<maximum-active-time>900000</maximum-active-time>

<house-keeping-test-sql>select CURRENT_DATE</house-keeping-test-sql>

</proxool>

考慮加大這個參數的值。假設使用配置文件的話。那麽就在proxool的配置文件裏加上proxool.maximum-active-time=900000（15分鐘。單位是毫秒！）或者你所想要的值。

參考站點：http://it.oyksoft.com/post/3983/

java-proxool 異常