HikariCp 无法连接到 DB2 数据库答案

【问题标题】：HikariCp is not able to connect to DB2 DatabaseHikariCp 无法连接到 DB2 数据库
【发布时间】：2019-11-28 11:26:47
【问题描述】：

当我尝试使用 Spring Boot 2.2.1 连接到 DB2 时。 HikariCP Pool 无法成功连接，但同时正在连接 JDBC。

添加线索：当我尝试输入错误的密码时，它给了我身份验证错误。

环境：

HikariCP 版本：3.4.1
JDK 版本：1.8.0_111
数据库：DB2
驱动版本：11.5
Spring Boot 版本：2.2.1

以下是错误日志

    2019-11-28 16:16:38.098  INFO 10144 --- [  restartedMain] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat initialized with port(s): 8080 (http)
2019-11-28 16:16:38.196  INFO 10144 --- [  restartedMain] o.apache.catalina.core.StandardService   : Starting service [Tomcat]
2019-11-28 16:16:38.197  INFO 10144 --- [  restartedMain] org.apache.catalina.core.StandardEngine  : Starting Servlet engine: [Apache Tomcat/9.0.27]
2019-11-28 16:16:38.799  INFO 10144 --- [  restartedMain] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring embedded WebApplicationContext
2019-11-28 16:16:38.799  INFO 10144 --- [  restartedMain] o.s.web.context.ContextLoader            : Root WebApplicationContext: initialization completed in 8427 ms
2019-11-28 16:16:39.866  WARN 10144 --- [  restartedMain] com.zaxxer.hikari.HikariConfig           : HikariPool-1 - maxLifetime is less than 30000ms, setting to default 1800000ms.
2019-11-28 16:16:39.866  INFO 10144 --- [  restartedMain] com.zaxxer.hikari.HikariDataSource       : HikariPool-1 - Starting...
2019-11-28 16:16:42.035  INFO 10144 --- [  restartedMain] com.zaxxer.hikari.pool.PoolBase          : HikariPool-1 - Driver does not support get/set network timeout for connections. ([jcc][10181][13991][4.26.14] Method getNetworkTimeout is not supported. ERRORCODE=-4450, SQLSTATE=0A504)
2019-11-28 16:16:42.036 ERROR 10144 --- [  restartedMain] com.zaxxer.hikari.pool.PoolBase          : HikariPool-1 - Failed to execute isValid() for connection, configure connection test query ([jcc][1079][11955][4.26.14] Feature not supported: timeout in isValid is not supported. ERRORCODE=-4450, SQLSTATE=0A504).
2019-11-28 16:16:42.320 ERROR 10144 --- [  restartedMain] com.zaxxer.hikari.pool.HikariPool        : HikariPool-1 - Error thrown while acquiring connection from data source

com.ibm.db2.jcc.am.SqlFeatureNotSupportedException: [jcc][1079][11955][4.26.14] Feature not supported: timeout in isValid is not supported. ERRORCODE=-4450, SQLSTATE=0A504
    at com.ibm.db2.jcc.am.b7.a(b7.java:804) ~[jcc-11.5.0.0.jar:na]
    at com.ibm.db2.jcc.am.b7.a(b7.java:66) ~[jcc-11.5.0.0.jar:na]
    at com.ibm.db2.jcc.am.b7.a(b7.java:116) ~[jcc-11.5.0.0.jar:na]
    at com.ibm.db2.jcc.am.Connection.isValidX(Connection.java:4158) ~[jcc-11.5.0.0.jar:na]
    at com.ibm.db2.jcc.am.Connection.isValid(Connection.java:7702) ~[jcc-11.5.0.0.jar:na]
    at com.zaxxer.hikari.pool.PoolBase.checkValidationSupport(PoolBase.java:450) ~[HikariCP-3.4.1.jar:na]
    at com.zaxxer.hikari.pool.PoolBase.checkDriverSupport(PoolBase.java:433) ~[HikariCP-3.4.1.jar:na]
    at com.zaxxer.hikari.pool.PoolBase.setupConnection(PoolBase.java:402) ~[HikariCP-3.4.1.jar:na]
    at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:355) ~[HikariCP-3.4.1.jar:na]
    at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:201) ~[HikariCP-3.4.1.jar:na]
    at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) [HikariCP-3.4.1.jar:na]
    at com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:562) [HikariCP-3.4.1.jar:na]
    at com.zaxxer.hikari.pool.HikariPool.<init>(HikariPool.java:115) [HikariCP-3.4.1.jar:na]
    at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:112) [HikariCP-3.4.1.jar:na]
    at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:158) [spring-jdbc-5.2.1.RELEASE.jar:5.2.1.RELEASE]
    at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:116) [spring-jdbc-5.2.1.RELEASE.jar:5.2.1.RELEASE]
    at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:79) [spring-jdbc-5.2.1.RELEASE.jar:5.2.1.RELEASE]
    at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:324) [spring-jdbc-5.2.1.RELEASE.jar:5.2.1.RELEASE]
    at org.springframework.boot.jdbc.EmbeddedDatabaseConnection.isEmbedded(EmbeddedDatabaseConnection.java:120) [spring-boot-2.2.1.RELEASE.jar:2.2.1.RELEASE]
    at org.springframework.boot.autoconfigure.orm.jpa.HibernateDefaultDdlAutoProvider.getDefaultDdlAuto(HibernateDefaultDdlAutoProvider.java:42) [spring-boot-autoconfigure-2.2.1.RELEASE.jar:2.2.1.RELEASE]
    at org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaConfiguration.lambda$getVendorProperties$1(HibernateJpaConfiguration.java:130) [spring-boot-autoconfigure-2.2.1.RELEASE.jar:2.2.1.RELEASE]
    at org.springframework.boot.autoconfigure.orm.jpa.HibernateSettings.getDdlAuto(HibernateSettings.java:41) ~[spring-boot-autoconfigure-2.2.1.RELEASE.jar:2.2.1.RELEASE]
    at org.springframework.boot.autoconfigure.orm.jpa.HibernateProperties.determineDdlAuto(HibernateProperties.java:136) ~[spring-boot-autoconfigure-2.2.1.RELEASE.jar:2.2.1.RELEASE]
    at org.springframework.boot.autoconfigure.orm.jpa.HibernateProperties.getAdditionalProperties(HibernateProperties.java:102) ~[spring-boot-autoconfigure-2.2.1.RELEASE.jar:2.2.1.RELEASE]
    at org.springframework.boot.autoconfigure.orm.jpa.HibernateProperties.determineHibernateProperties(HibernateProperties.java:94) ~[spring-boot-autoconfigure-2.2.1.RELEASE.jar:2.2.1.RELEASE]
    at org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaConfiguration.getVendorProperties(HibernateJpaConfiguration.java:132) [spring-boot-autoconfigure-2.2.1.RELEASE.jar:2.2.1.RELEASE]
    at org.springframework.boot.autoconfigure.orm.jpa.JpaBaseConfiguration.entityManagerFactory(JpaBaseConfiguration.java:133) ~[spring-boot-autoconfigure-2.2.1.RELEASE.jar:2.2.1.RELEASE]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_221]
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[na:1.8.0_221]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[na:1.8.0_221]
    at java.lang.reflect.Method.invoke(Unknown Source) ~[na:1.8.0_221]
    at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:154) ~[spring-beans-5.2.1.RELEASE.jar:5.2.1.RELEASE]
    at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:640) ~[spring-beans-5.2.1.RELEASE.jar:5.2.1.RELEASE]
    at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:625) ~[spring-beans-5.2.1.RELEASE.jar:5.2.1.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1338) ~[spring-beans-5.2.1.RELEASE.jar:5.2.1.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1177) ~[spring-beans-5.2.1.RELEASE.jar:5.2.1.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:557) ~[spring-beans-5.2.1.RELEASE.jar:5.2.1.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) ~[spring-beans-5.2.1.RELEASE.jar:5.2.1.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) ~[spring-beans-5.2.1.RELEASE.jar:5.2.1.RELEASE]
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) ~[spring-beans-5.2.1.RELEASE.jar:5.2.1.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) ~[spring-beans-5.2.1.RELEASE.jar:5.2.1.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) ~[spring-beans-5.2.1.RELEASE.jar:5.2.1.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1108) ~[spring-context-5.2.1.RELEASE.jar:5.2.1.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:868) ~[spring-context-5.2.1.RELEASE.jar:5.2.1.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550) ~[spring-context-5.2.1.RELEASE.jar:5.2.1.RELEASE]
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141) ~[spring-boot-2.2.1.RELEASE.jar:2.2.1.RELEASE]
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747) ~[spring-boot-2.2.1.RELEASE.jar:2.2.1.RELEASE]
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) ~[spring-boot-2.2.1.RELEASE.jar:2.2.1.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) ~[spring-boot-2.2.1.RELEASE.jar:2.2.1.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) ~[spring-boot-2.2.1.RELEASE.jar:2.2.1.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) ~[spring-boot-2.2.1.RELEASE.jar:2.2.1.RELEASE]
    at com.alight.onelight.benefitService.BenefitServiceApplication.main(BenefitServiceApplication.java:10) ~[main/:na]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_221]
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[na:1.8.0_221]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[na:1.8.0_221]
    at java.lang.reflect.Method.invoke(Unknown Source) ~[na:1.8.0_221]
    at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) ~[spring-boot-devtools-2.2.1.RELEASE.jar:2.2.1.RELEASE]

附加的属性文件：

spring.datasource.url=jdbc:db2:DBT1
spring.datasource.username=XXXXX
spring.datasource.password=XXXXXXX
spring.datasource.driver-class-name=com.ibm.db2.jcc.DB2Driver
spring.jpa.show-sql=true
spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.DB2Dialect
spring.datasource.hikari.minimum-idle= 10
spring.datasource.hikari.maximum-pool-size= 10
spring.datasource.hikari.max-lifetime= 1000
spring.datasource.hikari.auto-commit =true

【问题讨论】：

标签： java spring-boot jpa db2 hikaricp

【解决方案1】：

尝试使用suggested configuration：

dataSourceClassName = com.ibm.db2.jcc.DB2SimpleDataSource
dataSource.user=test
dataSource.password=test
dataSource.databaseName=mydb
dataSource.serverName=localhost
dataSource.portNumber=50000
dataSource.currentSchema = DB2INST1
dataSource.driverType = 4
DB2 应该可以正常工作，您是否尝试过将dataSourceClassName 属性指定为com.ibm.db2.jcc.DB2SimpleDataSource

【讨论】：

附加属性文件
@himanshu2212 添加spring.datasource.dataSourceClassName=com.ibm.db2.jcc.DB2SimpleDataSource
@himanshu2212 更改行中的值spring.datasource.driver-class-name=com.ibm.db2.jcc.DB2SimpleDataSource
更改配置 java.lang.ClassCastException 后出现以下异常：com.ibm.db2.jcc.DB2SimpleDataSource 无法转换为 java.sql.Driver
我需要附加任何文件吗？

【解决方案2】：

正如日志中明确指出的那样

连接执行isValid()失败，配置连接测试查询

看来您的 DB2 驱动程序还不够先进，无法支持isValid()，所以将configure a test query 连接到连接池（不知道DB2 版本需要是什么，通常类似于SELECT 1）。然后该查询用于确定连接是否有效，而不是调用isValid()。

【讨论】：