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在 Spring Boot 服务中运行 H2 数据库多个实例

[英]Running H2 database multiple instances in Spring Boot Services

 原文  2019-06-25 09:22:35  8   2    java/ spring-boot/ microservices/ h2/ multiple-instances

问题描述

I have created a Spring Boot app using embedded in memory H2 database.我使用嵌入式内存 H2 数据库创建了一个 Spring Boot 应用程序。 The application is running properly.应用程序运行正常。 H2 database we console is reachable on browser http://localhost:8080/h2 and application services are reachable at localhost:8080/context/service-endpoint .我们控制台的 H2 数据库可在浏览器http://localhost:8080/h2上访问，应用程序服务可在localhost:8080/context/service-endpoint 。 It means both H2 database and application is also accessible on same port.这意味着 H2 数据库和应用程序也可以在同一端口上访问。

Now, I run second instance of Spring boot application by passing --server.port=8888 , Spring Boot application starts on port 8888 but there is failure in H2DB up and running.现在，我通过传递--server.port=8888运行 Spring Boot 应用程序的第二个实例，Spring Boot 应用程序在端口 8888 上启动，但 H2DB 启动和运行失败。

Here, I presume that if in the first instance running on port 8080 then in second instance of same application with different port should also start H2 DB on specified different port that is in this case : 8888. However, it is failing.在这里，我假设如果第一个实例在端口 8080 上运行，那么在具有不同端口的同一应用程序的第二个实例中也应该在指定的不同端口上启动 H2 DB，在这种情况下：8888。但是，它失败了。

Please help.请帮忙。

LOG:日志：

15:08:02.019 [main] INFO com.rest.jpa.SpringJpaRestServicesApplication - Application starting....

  .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::        (v2.1.5.RELEASE)

2019-06-25 15:08:03.179  INFO 16376 --- [           main] c.r.j.SpringJpaRestServicesApplication   : Starting SpringJpaRestServicesApplication v0.0.1-SNAPSHOT on LP-5CD6242Q0M with PID 16376 (C:\project\spring-jpa-rest-services-0.0.1-SNAPSHOT.jar started by kumar.shorav in C:\project)
2019-06-25 15:08:03.182  INFO 16376 --- [           main] c.r.j.SpringJpaRestServicesApplication   : No active profile set, falling back to default profiles: default
2019-06-25 15:08:05.149  INFO 16376 --- [           main] .s.d.r.c.RepositoryConfigurationDelegate : Bootstrapping Spring Data repositories in DEFAULT mode.
2019-06-25 15:08:05.288  INFO 16376 --- [           main] .s.d.r.c.RepositoryConfigurationDelegate : Finished Spring Data repository scanning in 120ms. Found 1 repository interfaces.
2019-06-25 15:08:06.162  INFO 16376 --- [           main] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.transaction.annotation.ProxyTransactionManagementConfiguration' of type [org.springframework.transaction.annotation.ProxyTransactionManagementConfiguration$$EnhancerBySpringCGLIB$$582af4bf] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2019-06-25 15:08:07.355  INFO 16376 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat initialized with port(s): 8888 (http)
2019-06-25 15:08:07.440  INFO 16376 --- [           main] o.apache.catalina.core.StandardService   : Starting service [Tomcat]
2019-06-25 15:08:07.441  INFO 16376 --- [           main] org.apache.catalina.core.StandardEngine  : Starting Servlet engine: [Apache Tomcat/9.0.19]
2019-06-25 15:08:07.722  INFO 16376 --- [           main] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring embedded WebApplicationContext
2019-06-25 15:08:07.723  INFO 16376 --- [           main] o.s.web.context.ContextLoader            : Root WebApplicationContext: initialization completed in 4437 ms
2019-06-25 15:08:08.131  INFO 16376 --- [           main] com.zaxxer.hikari.HikariDataSource       : HikariPool-1 - Starting...
2019-06-25 15:08:09.400 ERROR 16376 --- [           main] com.zaxxer.hikari.pool.HikariPool        : HikariPool-1 - Exception during pool initialization.

org.h2.jdbc.JdbcSQLNonTransientConnectionException: Database may be already in use: null. Possible solutions: close all other connection(s); use the server mode [90020-199]
    at org.h2.message.DbException.getJdbcSQLException(DbException.java:617) ~[h2-1.4.199.jar!/:na]
    at org.h2.message.DbException.getJdbcSQLException(DbException.java:427) ~[h2-1.4.199.jar!/:na]
    at org.h2.message.DbException.get(DbException.java:194) ~[h2-1.4.199.jar!/:na]
    at org.h2.mvstore.db.MVTableEngine$Store.convertIllegalStateException(MVTableEngine.java:193) ~[h2-1.4.199.jar!/:na]
    at org.h2.mvstore.db.MVTableEngine$Store.open(MVTableEngine.java:173) ~[h2-1.4.199.jar!/:na]
    at org.h2.mvstore.db.MVTableEngine.init(MVTableEngine.java:95) ~[h2-1.4.199.jar!/:na]
    at org.h2.engine.Database.getPageStore(Database.java:2739) ~[h2-1.4.199.jar!/:na]
    at org.h2.engine.Database.open(Database.java:769) ~[h2-1.4.199.jar!/:na]
    at org.h2.engine.Database.openDatabase(Database.java:319) ~[h2-1.4.199.jar!/:na]
    at org.h2.engine.Database.<init>(Database.java:313) ~[h2-1.4.199.jar!/:na]
    at org.h2.engine.Engine.openSession(Engine.java:69) ~[h2-1.4.199.jar!/:na]
    at org.h2.engine.Engine.openSession(Engine.java:201) ~[h2-1.4.199.jar!/:na]
    at org.h2.engine.Engine.createSessionAndValidate(Engine.java:178) ~[h2-1.4.199.jar!/:na]
    at org.h2.engine.Engine.createSession(Engine.java:161) ~[h2-1.4.199.jar!/:na]
    at org.h2.engine.Engine.createSession(Engine.java:31) ~[h2-1.4.199.jar!/:na]
    at org.h2.engine.SessionRemote.connectEmbeddedOrServer(SessionRemote.java:336) ~[h2-1.4.199.jar!/:na]
    at org.h2.jdbc.JdbcConnection.<init>(JdbcConnection.java:169) ~[h2-1.4.199.jar!/:na]
    at org.h2.jdbc.JdbcConnection.<init>(JdbcConnection.java:148) ~[h2-1.4.199.jar!/:na]
    at org.h2.Driver.connect(Driver.java:69) ~[h2-1.4.199.jar!/:na]
    at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:136) ~[HikariCP-3.2.0.jar!/:na]
    at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:369) ~[HikariCP-3.2.0.jar!/:na]
    at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:198) ~[HikariCP-3.2.0.jar!/:na]
    at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:467) [HikariCP-3.2.0.jar!/:na]
    at com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:541) [HikariCP-3.2.0.jar!/:na]
    at com.zaxxer.hikari.pool.HikariPool.<init>(HikariPool.java:115) [HikariCP-3.2.0.jar!/:na]
    at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:112) [HikariCP-3.2.0.jar!/:na]
    at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:157) [spring-jdbc-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) [spring-jdbc-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) [spring-jdbc-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.jdbc.support.JdbcUtils.extractDatabaseMetaData(JdbcUtils.java:319) [spring-jdbc-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.jdbc.support.JdbcUtils.extractDatabaseMetaData(JdbcUtils.java:356) [spring-jdbc-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.boot.autoconfigure.orm.jpa.DatabaseLookup.getDatabase(DatabaseLookup.java:73) [spring-boot-autoconfigure-2.1.5.RELEASE.jar!/:2.1.5.RELEASE]
    at org.springframework.boot.autoconfigure.orm.jpa.JpaProperties.determineDatabase(JpaProperties.java:142) [spring-boot-autoconfigure-2.1.5.RELEASE.jar!/:2.1.5.RELEASE]
    at org.springframework.boot.autoconfigure.orm.jpa.JpaBaseConfiguration.jpaVendorAdapter(JpaBaseConfiguration.java:113) [spring-boot-autoconfigure-2.1.5.RELEASE.jar!/:2.1.5.RELEASE]
    at org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaConfiguration$$EnhancerBySpringCGLIB$$7701b72e.CGLIB$jpaVendorAdapter$6(<generated>) [spring-boot-autoconfigure-2.1.5.RELEASE.jar!/:2.1.5.RELEASE]
    at org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaConfiguration$$EnhancerBySpringCGLIB$$7701b72e$$FastClassBySpringCGLIB$$81fef358.invoke(<generated>) [spring-boot-autoconfigure-2.1.5.RELEASE.jar!/:2.1.5.RELEASE]
    at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:244) [spring-core-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:363) [spring-context-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaConfiguration$$EnhancerBySpringCGLIB$$7701b72e.jpaVendorAdapter(<generated>) [spring-boot-autoconfigure-2.1.5.RELEASE.jar!/:2.1.5.RELEASE]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_212]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_212]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_212]
    at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_212]
    at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:154) [spring-beans-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:622) [spring-beans-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:456) [spring-beans-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1321) [spring-beans-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1160) [spring-beans-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:555) [spring-beans-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:515) [spring-beans-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:320) [spring-beans-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) ~[spring-beans-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:318) [spring-beans-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) [spring-beans-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:277) ~[spring-beans-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1248) ~[spring-beans-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1168) ~[spring-beans-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:857) [spring-beans-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:760) [spring-beans-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:509) [spring-beans-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1321) [spring-beans-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1160) [spring-beans-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:555) [spring-beans-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:515) [spring-beans-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:320) [spring-beans-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) ~[spring-beans-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:318) [spring-beans-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) [spring-beans-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:277) ~[spring-beans-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1248) ~[spring-beans-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1168) ~[spring-beans-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:857) [spring-beans-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:760) [spring-beans-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:509) [spring-beans-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1321) [spring-beans-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1160) [spring-beans-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:555) [spring-beans-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:515) [spring-beans-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:320) [spring-beans-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) ~[spring-beans-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:318) [spring-beans-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) [spring-beans-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1105) ~[spring-context-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:867) ~[spring-context-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:549) ~[spring-context-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:142) ~[spring-boot-2.1.5.RELEASE.jar!/:2.1.5.RELEASE]
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:775) ~[spring-boot-2.1.5.RELEASE.jar!/:2.1.5.RELEASE]
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) ~[spring-boot-2.1.5.RELEASE.jar!/:2.1.5.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:316) ~[spring-boot-2.1.5.RELEASE.jar!/:2.1.5.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1260) ~[spring-boot-2.1.5.RELEASE.jar!/:2.1.5.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1248) ~[spring-boot-2.1.5.RELEASE.jar!/:2.1.5.RELEASE]
    at com.rest.jpa.SpringJpaRestServicesApplication.main(SpringJpaRestServicesApplication.java:20) ~[classes!/:0.0.1-SNAPSHOT]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_212]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_212]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_212]
    at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_212]
    at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:48) ~[spring-jpa-rest-services-0.0.1-SNAPSHOT.jar:0.0.1-SNAPSHOT]
    at org.springframework.boot.loader.Launcher.launch(Launcher.java:87) ~[spring-jpa-rest-services-0.0.1-SNAPSHOT.jar:0.0.1-SNAPSHOT]
    at org.springframework.boot.loader.Launcher.launch(Launcher.java:50) ~[spring-jpa-rest-services-0.0.1-SNAPSHOT.jar:0.0.1-SNAPSHOT]
    at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:51) ~[spring-jpa-rest-services-0.0.1-SNAPSHOT.jar:0.0.1-SNAPSHOT]
Caused by: java.lang.IllegalStateException: The file is locked: nio:C:/Users/kumar.shorav/test.mv.db [1.4.199/7]
    at org.h2.mvstore.DataUtils.newIllegalStateException(DataUtils.java:883) ~[h2-1.4.199.jar!/:na]
    at org.h2.mvstore.FileStore.open(FileStore.java:172) ~[h2-1.4.199.jar!/:na]
    at org.h2.mvstore.MVStore.<init>(MVStore.java:390) ~[h2-1.4.199.jar!/:na]
    at org.h2.mvstore.MVStore$Builder.open(MVStore.java:3343) ~[h2-1.4.199.jar!/:na]
    at org.h2.mvstore.db.MVTableEngine$Store.open(MVTableEngine.java:162) ~[h2-1.4.199.jar!/:na]
    ... 95 common frames omitted

2019-06-25 15:08:09.404  WARN 16376 --- [           main] o.s.b.a.orm.jpa.DatabaseLookup           : Unable to determine jdbc url from datasource

org.springframework.jdbc.support.MetaDataAccessException: Could not get Connection for extracting meta-data; nested exception is org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is org.h2.jdbc.JdbcSQLNonTransientConnectionException: Database may be already in use: null. Possible solutions: close all other connection(s); use the server mode [90020-199]
    at org.springframework.jdbc.support.JdbcUtils.extractDatabaseMetaData(JdbcUtils.java:328) ~[spring-jdbc-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.jdbc.support.JdbcUtils.extractDatabaseMetaData(JdbcUtils.java:356) ~[spring-jdbc-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.boot.autoconfigure.orm.jpa.DatabaseLookup.getDatabase(DatabaseLookup.java:73) ~[spring-boot-autoconfigure-2.1.5.RELEASE.jar!/:2.1.5.RELEASE]
    at org.springframework.boot.autoconfigure.orm.jpa.JpaProperties.determineDatabase(JpaProperties.java:142) [spring-boot-autoconfigure-2.1.5.RELEASE.jar!/:2.1.5.RELEASE]
    at org.springframework.boot.autoconfigure.orm.jpa.JpaBaseConfiguration.jpaVendorAdapter(JpaBaseConfiguration.java:113) [spring-boot-autoconfigure-2.1.5.RELEASE.jar!/:2.1.5.RELEASE]
    at org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaConfiguration$$EnhancerBySpringCGLIB$$7701b72e.CGLIB$jpaVendorAdapter$6(<generated>) [spring-boot-autoconfigure-2.1.5.RELEASE.jar!/:2.1.5.RELEASE]
    at org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaConfiguration$$EnhancerBySpringCGLIB$$7701b72e$$FastClassBySpringCGLIB$$81fef358.invoke(<generated>) [spring-boot-autoconfigure-2.1.5.RELEASE.jar!/:2.1.5.RELEASE]
    at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:244) [spring-core-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:363) [spring-context-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaConfiguration$$EnhancerBySpringCGLIB$$7701b72e.jpaVendorAdapter(<generated>) [spring-boot-autoconfigure-2.1.5.RELEASE.jar!/:2.1.5.RELEASE]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_212]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_212]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_212]
    at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_212]
    at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:154) [spring-beans-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:622) [spring-beans-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:456) [spring-beans-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1321) [spring-beans-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1160) [spring-beans-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:555) [spring-beans-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:515) [spring-beans-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:320) [spring-beans-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) ~[spring-beans-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:318) [spring-beans-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) [spring-beans-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:277) ~[spring-beans-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1248) ~[spring-beans-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1168) ~[spring-beans-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:857) [spring-beans-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:760) [spring-beans-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:509) [spring-beans-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1321) [spring-beans-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1160) [spring-beans-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:555) [spring-beans-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:515) [spring-beans-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:320) [spring-beans-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) ~[spring-beans-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:318) [spring-beans-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) [spring-beans-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:277) ~[spring-beans-5.1.7.RELEASE.jar!/:5.1.7.RELEASE]
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolve

2 个解决方案

解决方案1
 2 已采纳  2019-06-25 09:50:04

I'm not an H2 expert, but the exception here explains well what happens.我不是 H2 专家，但这里的例外很好地解释了会发生什么。

From your stacktrace:从您的堆栈跟踪：

The file is locked: nio:C:/Users/kumar.shorav/test.mv.db

So I believe the first instance stores its h2 stuff in this file, it gets locked by this process.所以我相信第一个实例将它的 h2 内容存储在这个文件中，它被这个进程锁定。 Now the second instance comes up and it probably has the same set of configurations and among them where to store the file (in the same place).现在出现了第二个实例，它可能具有相同的配置集以及其中存储文件的位置（在同一位置）。

So when it starts, the file is already locked, and H2 of the second instance can't start.所以启动的时候，文件已经被锁定了，第二个实例的H2无法启动。

Now this doesn't correlate with the fact that you say that H2 runs purely in memory, at least its not what the exception says现在这与您说 H2 纯粹在内存中运行的事实无关，至少它不是异常所说的

解决方案2
 0  2020-08-16 14:48:14

对我来说，它在停止 h2.bat 作业后起作用了。

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