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SQLException:等待免费可用连接超时

我正在用java构建一个应用程序Play Framework 2.0.4.该应用程序部署在herokucleardb数据库中.

用户不断得到这个偶然的错误:

PlayException: Execution exception [[PersistenceException: java.sql.SQLException: Timed out waiting for a free available connection.]]
    at play.core.ActionInvoker$$anonfun$receive$1.apply(Invoker.scala:134)
    at play.core.ActionInvoker$$anonfun$receive$1.apply(Invoker.scala:115)
    at akka.actor.Actor$class.apply(Actor.scala:318)
    at play.core.ActionInvoker.apply(Invoker.scala:113)
    at akka.actor.ActorCell.invoke(ActorCell.scala:626)
    at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:197)
    at akka.dispatch.Mailbox.run(Mailbox.scala:179)
    at akka.dispatch.ForkJoinExecutorConfigurator$MailboxExecutionTask.exec(AbstractDispatcher.scala:516)
    at akka.jsr166y.ForkJoinTask.doExec(ForkJoinTask.java:259)
    at akka.jsr166y.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:975)
    at akka.jsr166y.ForkJoinPool.runWorker(ForkJoinPool.java:1479)
    at akka.jsr166y.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:104)
Caused by: javax.persistence.PersistenceException: java.sql.SQLException: Timed out waiting for a free available connection.
    at com.avaje.ebeaninternal.server.transaction.TransactionManager.createQueryTransaction(TransactionManager.java:356)
    at com.avaje.ebeaninternal.server.core.DefaultServer.createQueryTransaction(DefaultServer.java:2021)
    at com.avaje.ebeaninternal.server.core.OrmQueryRequest.initTransIfRequired(OrmQueryRequest.java:241)
    at com.avaje.ebeaninternal.server.core.DefaultServer.findId(DefaultServer.java:1212)
    at com.avaje.ebeaninternal.server.core.DefaultServer.find(DefaultServer.java:1118)
    at com.avaje.ebeaninternal.server.core.DefaultServer.find(DefaultServer.java:1105)
    at play.db.ebean.Model$Finder.byId(Model.java:237)

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现在情况越来越糟,有时所有用户每次都会得到相同的错误,直到我在heroku中重新启动应用程序.

有任何调试帮助或提示吗？

heroku playframework

Kir*_*Ape

2015 02-10

7
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