Caused by: com.mchange.v2.resourcepool.TimeoutException: A client timed out while waiting to acquire a resource from com.mchange.v2.resourcepool.BasicResourcePool@1483de4 -- timeout at awaitAvailable(

本文转载自查看原文 2018-11-29 16:23 3901 异常

Caused by: com.mchange.v2.resourcepool.TimeoutException: A client timed out while waiting to acquire a resource from com.mchange.v2.resourcepool.BasicResourcePool@1483de4 -- timeout at awaitAvailable()

把spring-dao.xml中

<property name="maxPoolSize" value="30"/>
改成

<property name="maxPoolSize" value="40"/>
运行正常，不抛出异常
再重新改回

<property name="maxPoolSize" value="30"/>
运行正常，没有异常

有可能是多运行几次，就不会有异常了？不能解决

解决办法
将url加上autoReconnect=true&rewriteBatchedStatements=TRUE

jdbc.url=jdbc:mysql://127.0.0.1:3306/seckill?useUnicode=true&characterEncoding=utf8&autoReconnect=true&rewriteBatchedStatements=TRUE

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猜您在找 【原创】使用c3p0数据库连接池时出现com.mchange.v2.resourcepool.TimeoutException 连接mysql提示com.mchange.v2.resourcepool.BasicResourcePool Caused by: com.alibaba.dubbo.remoting.TimeoutException: Waiting server-side response timeout. upstream timed out (110: Connection timed out) while reading response header from upstream, client: 关于dubbo服务产生异常之：Caused by: com.alibaba.dubbo.remoting.TimeoutException: Waiting server-side response timeout by scan timer. Error response from daemon: Get https://registry-1.docker.io/v2/: net/http: request canceled while waiting for connection (Client.Timeout exceeded while awaiting headers) 解决：CannotAcquireResourceException: A ResourcePool could not acquire a resource from its primary factory or source. Caused by: java.lang.IllegalStateException: Failed to introspect Class [com.mchange.v2.c3p0.ComboPooledDataSource] from ClassLoader [ParallelWebappClassLoader docker报错：Get https://registry-1.docker.io/v2/: net/http: request canceled while waiting for connection (Client.Timeout exceeded while awaiting headers) [nginx] 解决：upstream timed out (110: Connection timed out) while reading response header from upstream