在春季启动一段时间后，数据库连接丢失

Posted 2023-02-26

【中文标题】在春季启动一段时间后，数据库连接丢失

【英文标题】：DB connection is getting lost after some time in spring boot

【发布时间】：2020-04-07 00:17:29

【问题描述】：

当应用程序启动时，我们遇到了这个问题，数据库连接被创建，一段时间后连接被服务器关闭。我们在 Amazon RDS 中使用 Postgres。

2019-12-13 14:02:33.385  WARN 1 --- [io-8080-exec-41] o.h.engine.jdbc.spi.SqlExceptionHelper   : SQL Error: 0, SQLState: null
2019-12-13 14:02:33.386 ERROR 1 --- [io-8080-exec-41] o.h.engine.jdbc.spi.SqlExceptionHelper   : HikariPool-1 - Connection is not available, request timed out after 30000ms.
2019-12-13 14:02:33.391 ERROR 1 --- [io-8080-exec-41] o.a.c.c.C.[.[.[/].[dispatcherServlet]    : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is org.springframework.dao.DataAccessResourceFailureException: Unable to acquire JDBC Connection; nested exception is org.hibernate.exception.JDBCConnectionException: Unable to acquire JDBC Connection] with root cause
java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 30000ms.
    at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:669) ~[HikariCP-2.7.9.jar!/:na]
    at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:183) ~[HikariCP-2.7.9.jar!/:na]
    at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:148) ~[HikariCP-2.7.9.jar!/:na]
    at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) ~[HikariCP-2.7.9.jar!/:na]
    at org.hibernate.engine.jdbc.connections.internal.DatasourceConnectionProviderImpl.getConnection(DatasourceConnectionProviderImpl.java:122) ~[hibernate-core-5.2.17.Final.jar!/:5.2.17.Final]
    at org.hibernate.internal.NonContextualJdbcConnectionAccess.obtainConnection(NonContextualJdbcConnectionAccess.java:35) ~[hibernate-core-5.2.17.Final.jar!/:5.2.17.Final]
    at org.hibernate.resource.jdbc.internal.LogicalConnectionManagedImpl.acquireConnectionIfNeeded(LogicalConnectionManagedImpl.java:106) ~[hibernate-core-5.2.17.Final.jar!/:5.2.17.Final]
    at org.hibernate.resource.jdbc.internal.LogicalConnectionManagedImpl.getPhysicalConnection(LogicalConnectionManagedImpl.java:136) ~[hibernate-core-5.2.17.Final.jar!/:5.2.17.Final]
    at org.hibernate.engine.jdbc.internal.StatementPreparerImpl.connection(StatementPreparerImpl.java:47) ~[hibernate-core-5.2.17.Final.jar!/:5.2.17.Final]
    at org.hibernate.engine.jdbc.internal.StatementPreparerImpl$5.doPrepare(StatementPreparerImpl.java:145) ~[hibernate-core-5.2.17.Final.jar!/:5.2.17.Final]
    at org.hibernate.engine.jdbc.internal.StatementPreparerImpl$StatementPreparationTemplate.prepareStatement(StatementPreparerImpl.java:171) ~[hibernate-core-5.2.17.Final.jar!/:5.2.17.Final]
    at org.hibernate.engine.jdbc.internal.StatementPreparerImpl.prepareQueryStatement(StatementPreparerImpl.java:147) ~[hibernate-core-5.2.17.Final.jar!/:5.2.17.Final]
    at org.hibernate.loader.Loader.prepareQueryStatement(Loader.java:1985) ~[hibernate-core-5.2.17.Final.jar!/:5.2.17.Final]
    at org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1915) ~[hibernate-core-5.2.17.Final.jar!/:5.2.17.Final]
    at org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1893) ~[hibernate-core-5.2.17.Final.jar!/:5.2.17.Final]
    at org.hibernate.loader.Loader.doQuery(Loader.java:938) ~[hibernate-core-5.2.17.Final.jar!/:5.2.17.Final]
    at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:341) ~[hibernate-core-5.2.17.Final.jar!/:5.2.17.Final]
    at org.hibernate.loader.Loader.doList(Loader.java:2692) ~[hibernate-core-5.2.17.Final.jar!/:5.2.17.Final]
    at org.hibernate.loader.Loader.doList(Loader.java:2675) ~[hibernate-core-5.2.17.Final.jar!/:5.2.17.Final]
    at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2507) ~[hibernate-core-5.2.17.Final.jar!/:5.2.17.Final]
    at org.hibernate.loader.Loader.list(Loader.java:2502) ~[hibernate-core-5.2.17.Final.jar!/:5.2.17.Final]
    at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:502) ~[hibernate-core-5.2.17.Final.jar!/:5.2.17.Final]
    at org.hibernate.hql.internal.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:392) ~[hibernate-core-5.2.17.Final.jar!/:5.2.17.Final]
    at org.hibernate.engine.query.spi.HQLQueryPlan.performList(HQLQueryPlan.java:216) ~[hibernate-core-5.2.17.Final.jar!/:5.2.17.Final]
    at org.hibernate.internal.SessionImpl.list(SessionImpl.java:1490) ~[hibernate-core-5.2.17.Final.jar!/:5.2.17.Final]
    at org.hibernate.query.internal.AbstractProducedQuery.doList(AbstractProducedQuery.java:1445) ~[hibernate-core-5.2.17.Final.jar!/:5.2.17.Final]
    at org.hibernate.query.internal.AbstractProducedQuery.list(AbstractProducedQuery.java:1414) ~[hibernate-core-5.2.17.Final.jar!/:5.2.17.Final]
    at org.hibernate.query.internal.AbstractProducedQuery.getSingleResult(AbstractProducedQuery.java:1463) ~[hibernate-core-5.2.17.Final.jar!/:5.2.17.Final]
    at org.hibernate.query.criteria.internal.compile.CriteriaQueryTypeQueryAdapter.getSingleResult(CriteriaQueryTypeQueryAdapter.java:107) ~[hibernate-core-5.2.17.Final.jar!/:5.2.17.Final]
    at org.springframework.data.jpa.repository.query.JpaQueryExecution$SingleEntityExecution.doExecute(JpaQueryExecution.java:214) ~[spring-data-jpa-2.0.10.RELEASE.jar!/:2.0.10.RELEASE]
    at org.springframework.data.jpa.repository.query.JpaQueryExecution.execute(JpaQueryExecution.java:91) ~[spring-data-jpa-2.0.10.RELEASE.jar!/:2.0.10.RELEASE]
    at org.springframework.data.jpa.repository.query.AbstractJpaQuery.doExecute(AbstractJpaQuery.java:136) ~[spring-data-jpa-2.0.10.RELEASE.jar!/:2.0.10.RELEASE]
    at org.springframework.data.jpa.repository.query.AbstractJpaQuery.execute(AbstractJpaQuery.java:125) ~[spring-data-jpa-2.0.10.RELEASE.jar!/:2.0.10.RELEASE]
    at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.doInvoke(RepositoryFactorySupport.java:602) ~[spring-data-commons-2.0.10.RELEASE.jar!/:2.0.10.RELEASE]
    at 

【问题讨论】：

请显示数据库配置

你使用的是什么版本的Spring Boot？ db依赖的版本是什么？

【参考方案1】：

需要添加如下配置让spring boot重新连接DB。

spring.datasource.testOnBorrow=true
spring.datasource.validationQuery=SELECT 1

你可以在这里找到解释：Spring Boot JPA - configuring auto reconnect。