HikariCP 配置自动关闭错误的数据库连接

Question

我有一个 spring 启动应用程序连接到 MS SQL 服务器。 HikariCP 用于 DS。在测试环境中，SQL 服务器数据库由于某种原因（我不知道）每晚都会重新启动。一旦数据库重新启动，直到我重新启动应用程序，我看到以下异常。我希望在不重新启动应用程序的情况下重置连接。感谢任何避免此错误的帮助

javax.persistence.PersistenceException: org.hibernate.TransactionException: Already have an associated managed connection
    at org.hibernate.jpa.spi.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1763) ~[hibernate-entitymanager-4.3.10.Final.jar!/:4.3.10.Final]
    at org.hibernate.jpa.spi.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1677) ~[hibernate-entitymanager-4.3.10.Final.jar!/:4.3.10.Final]
    at org.hibernate.jpa.spi.AbstractEntityManagerImpl.throwPersistenceException(AbstractEntityManagerImpl.java:1771) ~[hibernate-entitymanager-4.3.10.Final.jar!/:4.3.10.Final]
    at org.hibernate.jpa.internal.TransactionImpl.begin(TransactionImpl.java:64) ~[hibernate-entitymanager-4.3.10.Final.jar!/:4.3.10.Final]
    at org.springframework.orm.jpa.ExtendedEntityManagerCreator$ExtendedEntityManagerInvocationHandler.enlistInCurrentTransaction(ExtendedEntityManagerCreator.java:398) ~[spring-orm-4.1.7.RELEASE.jar!/:4.1.7.RELEASE]
    at org.springframework.orm.jpa.ExtendedEntityManagerCreator$ExtendedEntityManagerInvocationHandler.doJoinTransaction(ExtendedEntityManagerCreator.java:376) ~[spring-orm-4.1.7.RELEASE.jar!/:4.1.7.RELEASE]
    at org.springframework.orm.jpa.ExtendedEntityManagerCreator$ExtendedEntityManagerInvocationHandler.invoke(ExtendedEntityManagerCreator.java:327) ~[spring-orm-4.1.7.RELEASE.jar!/:4.1.7.RELEASE]
    at com.sun.proxy.$Proxy119.joinTransaction(Unknown Source) ~[na:na]
    at org.apache.camel.component.jpa.JpaConsumer.doInTransaction(JpaConsumer.java:97) ~[camel-jpa-2.15.2.1.jar!/:2.15.2..1]
    at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:133) ~[spring-tx-4.1.7.RELEASE.jar!/:4.1.7.RELEASE]
    at org.apache.camel.component.jpa.JpaConsumer.poll(JpaConsumer.java:94) ~[camel-jpa-2.15.2..1.jar!/:2.15.2..1]
    at org.apache.camel.impl.ScheduledPollConsumer.doRun(ScheduledPollConsumer.java:174) [camel-core-2.15.2.jar!/:2.15.2]
    at org.apache.camel.impl.ScheduledPollConsumer.run(ScheduledPollConsumer.java:101) [camel-core-2.15.2.jar!/:2.15.2]
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [na:1.8.0_05]
    at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) [na:1.8.0_05]
    at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access1(ScheduledThreadPoolExecutor.java:180) [na:1.8.0_05]
    at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) [na:1.8.0_05]
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [na:1.8.0_05]
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [na:1.8.0_05]
    at java.lang.Thread.run(Thread.java:745) [na:1.8.0_05]
Caused by: org.hibernate.TransactionException: Already have an associated managed connection
    at org.hibernate.engine.transaction.internal.jdbc.JdbcTransaction.doBegin(JdbcTransaction.java:65) ~[hibernate-core-4.3.10.Final.jar!/:4.3.10.Final]
    at org.hibernate.engine.transaction.spi.AbstractTransactionImpl.begin(AbstractTransactionImpl.java:162) ~[hibernate-core-4.3.10.Final.jar!/:4.3.10.Final]
    at org.hibernate.internal.SessionImpl.beginTransaction(SessionImpl.java:1471) ~[hibernate-core-4.3.10.Final.jar!/:4.3.10.Final]
    at org.hibernate.jpa.internal.TransactionImpl.begin(TransactionImpl.java:61) ~[hibernate-entitymanager-4.3.10.Final.jar!/:4.3.10.Final]
    ... 16 common frames omitted

Answer 1

我正在使用 Camel Jpa 组件从数据库中轮询数据。我必须使用 Camel 2.16 中可用的 sharedEntityManager 选项来解决这个问题。

http://camel.apache.org/jpa.html

同样的问题被移植到HikariCP论坛。

https://groups.google.com/forum/#!topic/hikari-cp/NpBflCtAm4A

其他有用的链接：Already have an associated managed connection error

HikariCP 配置自动关闭错误的数据库连接

HikariCP configuration to auto close bad DB connections

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