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org.hibernate.MappingException: persistent class not known: for non entity class

I have issue deploying a new version of my app in tomcat. I got an exception for class which was an entity with #OneToOne relation to another entity class. In the new version of the app, the both classes are not entities anymore and don't have relation. Is appear is tried to clean the MySQL, but it fails on this step and I try the couple of tings online and still is not working, any help will be welcomed.
Caused by: javax.persistence.PersistenceException: [PersistenceUnit: default] Unable to build Hibernate SessionFactory; nested exception is org.hibernate.MappingException: persistent class not known: com.mikegrep.TwitterModel.PublicMetrics
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:421)
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:396)
at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.afterPropertiesSet(LocalContainerEntityManagerFactoryBean.java:341)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1863)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1800)
... 25 more
Caused by: org.hibernate.MappingException: persistent class not known: com.mikegrep.TwitterModel.PublicMetrics
at org.hibernate.boot.internal.MetadataImpl.getIdentifierType(MetadataImpl.java:427)
at org.hibernate.type.EntityType.getIdentifierType(EntityType.java:603)
at org.hibernate.type.EntityType.getIdentifierOrUniqueKeyType(EntityType.java:643)
at org.hibernate.persister.entity.AbstractPropertyMapping.initIdentifierPropertyPaths(AbstractPropertyMapping.java:396)
at org.hibernate.persister.entity.AbstractPropertyMapping.initPropertyPaths(AbstractPropertyMapping.java:365)
at org.hibernate.persister.entity.AbstractEntityPersister.initOrdinaryPropertyPaths(AbstractEntityPersister.java:2629)
at org.hibernate.persister.entity.AbstractEntityPersister.initPropertyPaths(AbstractEntityPersister.java:2676)
at org.hibernate.persister.entity.AbstractEntityPersister.postConstruct(AbstractEntityPersister.java:4344)
at org.hibernate.persister.entity.SingleTableEntityPersister.<init>(SingleTableEntityPersister.java:449)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at org.hibernate.persister.internal.PersisterFactoryImpl.createEntityPersister(PersisterFactoryImpl.java:96)
at org.hibernate.persister.internal.PersisterFactoryImpl.createEntityPersister(PersisterFactoryImpl.java:77)
at org.hibernate.metamodel.internal.MetamodelImpl.initialize(MetamodelImpl.java:181)
at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:319)
at org.hibernate.boot.internal.SessionFactoryBuilderImpl.build(SessionFactoryBuilderImpl.java:471)
at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:1498)
at org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory(SpringHibernateJpaPersistenceProvider.java:58)
at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:365)
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:409)

It seems like your PublicMetrics cannot be mapped correctly. Since it is not within a OneToMany relationship anymore you have to tell Hibernate how to serialize/deserialize it, e.g. using a javax.persistence.AttributeConverter. Its hard to make those assumptions without seeing the actual models, though.

Seems JPA spring.jpa.hibernate.ddl-auto=update doesn't work

I build a simple SpringBoot App (version: 2.4.3). I have the following Entity:
package com.ksteindl.logolo.domain;
import javax.persistence.Entity;
import javax.persistence.Id;
#Entity
public class Foo {
#Id
private String id;
private String foo;
public String getFoo() {
return foo;
}
public void setFoo(String foo) {
this.foo = foo;
}
public void setId(String id) {
this.id = id;
}
public String getId() {
return id;
}
}
and an application.properties
spring.jpa.show-sql=true
spring.datasource.url = jdbc:mysql://localhost:3306/mysql
spring.datasource.username=admin
spring.datasource.password=admin
spring.jpa.database-platform=org.hibernate.dialect.MySQL5Dialect
spring.jpa.hibernate.ddl-auto=update
spring.jpa.properties.hibernate.dialect = org.hibernate.dialect.MySQL57Dialect
At first run, everything seems fine. The tables are created according to the Entites.
However, when I restart my app, I get exceptions for every Entity/Table I have. Moreover, if I modify my Entity (for example introduce a bar attribute in Foo Entity), the corresponding Table didn't change in the DB.
It seems to me, that it tries to re-create the tables, but I don't know why.
I got the following Exceptions for every Table/Entity I have:
Hibernate: create table foo (id varchar(255) not null, bar varchar(255), baz varchar(255), foo varchar(255), primary key (id)) engine=InnoDB
2021-04-02 16:34:17.000 WARN 16359 --- [ restartedMain] o.h.t.s.i.ExceptionHandlerLoggedImpl : GenerationTarget encountered exception accepting command : Error executing DDL "create table foo (id varchar(255) not null, bar varchar(255), baz varchar(255), foo varchar(255), primary key (id)) engine=InnoDB" via JDBC Statement
org.hibernate.tool.schema.spi.CommandAcceptanceException: Error executing DDL "create table foo (id varchar(255) not null, bar varchar(255), baz varchar(255), foo varchar(255), primary key (id)) engine=InnoDB" via JDBC Statement
at org.hibernate.tool.schema.internal.exec.GenerationTargetToDatabase.accept(GenerationTargetToDatabase.java:67) ~[hibernate-core-5.4.28.Final.jar:5.4.28.Final]
at org.hibernate.tool.schema.internal.AbstractSchemaMigrator.applySqlString(AbstractSchemaMigrator.java:559) [hibernate-core-5.4.28.Final.jar:5.4.28.Final]
at org.hibernate.tool.schema.internal.AbstractSchemaMigrator.applySqlStrings(AbstractSchemaMigrator.java:504) [hibernate-core-5.4.28.Final.jar:5.4.28.Final]
at org.hibernate.tool.schema.internal.AbstractSchemaMigrator.createTable(AbstractSchemaMigrator.java:277) [hibernate-core-5.4.28.Final.jar:5.4.28.Final]
at org.hibernate.tool.schema.internal.GroupedSchemaMigratorImpl.performTablesMigration(GroupedSchemaMigratorImpl.java:71) [hibernate-core-5.4.28.Final.jar:5.4.28.Final]
at org.hibernate.tool.schema.internal.AbstractSchemaMigrator.performMigration(AbstractSchemaMigrator.java:207) [hibernate-core-5.4.28.Final.jar:5.4.28.Final]
at org.hibernate.tool.schema.internal.AbstractSchemaMigrator.doMigration(AbstractSchemaMigrator.java:114) [hibernate-core-5.4.28.Final.jar:5.4.28.Final]
at org.hibernate.tool.schema.spi.SchemaManagementToolCoordinator.performDatabaseAction(SchemaManagementToolCoordinator.java:184) [hibernate-core-5.4.28.Final.jar:5.4.28.Final]
at org.hibernate.tool.schema.spi.SchemaManagementToolCoordinator.process(SchemaManagementToolCoordinator.java:73) [hibernate-core-5.4.28.Final.jar:5.4.28.Final]
at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:318) [hibernate-core-5.4.28.Final.jar:5.4.28.Final]
at org.hibernate.boot.internal.SessionFactoryBuilderImpl.build(SessionFactoryBuilderImpl.java:468) [hibernate-core-5.4.28.Final.jar:5.4.28.Final]
at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:1259) [hibernate-core-5.4.28.Final.jar:5.4.28.Final]
at org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory(SpringHibernateJpaPersistenceProvider.java:58) [spring-orm-5.3.4.jar:5.3.4]
at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:365) [spring-orm-5.3.4.jar:5.3.4]
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:409) [spring-orm-5.3.4.jar:5.3.4]
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:396) [spring-orm-5.3.4.jar:5.3.4]
at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.afterPropertiesSet(LocalContainerEntityManagerFactoryBean.java:341) [spring-orm-5.3.4.jar:5.3.4]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1845) [spring-beans-5.3.4.jar:5.3.4]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1782) [spring-beans-5.3.4.jar:5.3.4]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:602) [spring-beans-5.3.4.jar:5.3.4]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:524) [spring-beans-5.3.4.jar:5.3.4]
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) [spring-beans-5.3.4.jar:5.3.4]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.3.4.jar:5.3.4]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) [spring-beans-5.3.4.jar:5.3.4]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) [spring-beans-5.3.4.jar:5.3.4]
at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1153) ~[spring-context-5.3.4.jar:5.3.4]
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:907) ~[spring-context-5.3.4.jar:5.3.4]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:582) ~[spring-context-5.3.4.jar:5.3.4]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:144) ~[spring-boot-2.4.3.jar:2.4.3]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:767) ~[spring-boot-2.4.3.jar:2.4.3]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:759) ~[spring-boot-2.4.3.jar:2.4.3]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:426) ~[spring-boot-2.4.3.jar:2.4.3]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:326) ~[spring-boot-2.4.3.jar:2.4.3]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1311) ~[spring-boot-2.4.3.jar:2.4.3]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1300) ~[spring-boot-2.4.3.jar:2.4.3]
at com.ksteindl.logolo.LogoloApplication.main(LogoloApplication.java:10) ~[classes/:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_282]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_282]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_282]
at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_282]
at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) ~[spring-boot-devtools-2.4.3.jar:2.4.3]
Caused by: java.sql.SQLSyntaxErrorException: Table 'foo' already exists
at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:120) ~[mysql-connector-java-8.0.23.jar:8.0.23]
at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:122) ~[mysql-connector-java-8.0.23.jar:8.0.23]
at com.mysql.cj.jdbc.StatementImpl.executeInternal(StatementImpl.java:762) ~[mysql-connector-java-8.0.23.jar:8.0.23]
at com.mysql.cj.jdbc.StatementImpl.execute(StatementImpl.java:646) ~[mysql-connector-java-8.0.23.jar:8.0.23]
at com.zaxxer.hikari.pool.ProxyStatement.execute(ProxyStatement.java:95) ~[HikariCP-3.4.5.jar:na]
at com.zaxxer.hikari.pool.HikariProxyStatement.execute(HikariProxyStatement.java) ~[HikariCP-3.4.5.jar:na]
at org.hibernate.tool.schema.internal.exec.GenerationTargetToDatabase.accept(GenerationTargetToDatabase.java:54) ~[hibernate-core-5.4.28.Final.jar:5.4.28.Final]
... 40 common frames omitted
Can someone please help me? Thanks

In some cases, Hibernate is not able to make some changes on the database schema by itself.
That's why in general we try not to set ddl-auto to update and we prefer to use a data migration tool like liquibase or flyway.
In very simple cases like adding a column for example, Hibernate will work very well because it's a non breaking change. On the other hand, if you want to delete a column for example, it becomes more delicate. In this case your java entity will not know about this column anymore, but in the database it will still exist.
This is both a problem and a good thing because Hibernate makes sure that you don't lose data, but it is also the reason why some changes are not made.
As I told you above, we will prefer to use data migration tools, which are made to do this kind of things.
You can have a look at Liquibase for example, which is a very good tool.
Here are some useful links:
https://www.liquibase.org/
https://docs.liquibase.com/tools-integrations/springboot/springboot.html
https://www.baeldung.com/liquibase-refactor-schema-of-java-app
But you can also use flyway (which I don't know) : https://flywaydb.org/
And finally, here is a comparison between Liquibase and Flyway rather interesting: https://dzone.com/articles/flyway-vs-liquibase

It looks like in 2.4.3 SpringBoot JPA ddl-auto=update behavior doesn't work with MySql 8.
With PostgreSQL 13, the ddl-auto=update behavior works perfectly, without any error.
my application.yml
spring:
jpa:
hibernate:
ddl-auto: update
database-platform: org.hibernate.dialect.PostgreSQLDialect
datasource:
url: "jdbc:postgresql://localhost:5432/mydb"
username: myuser
password: mypassword
If someone can confrim/condtradict, that would be reassuring.

The dreaded Java SpringBoot app not connecting to MySQL with Docker-compose java.net.ConnectException: Connection refused

I have been struggling with the following issue - the dreaded Java SpringBoot app not connecting to MySQL with docker compose exceptions:
com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure
JDBCConnectionException: Unable to open JDBC Connection for DDL execution
java.net.ConnectException: Connection refused
The app works fine on its own, but it can't seem to connect to mysql once I get it in Docker. I think I have all parameters correct, what am I missing?
Platform:
MacOS Mojave 10.14.6
---
Docker version 19.03.13, build 4484c46d9d
docker-compose version 1.27.4, build 40524192
---
mysql Ver 8.0.21 for osx10.14 on x86_64 (Homebrew)
---
openjdk 11.0.8 2020-07-14
OpenJDK Runtime Environment AdoptOpenJDK (build 11.0.8+10)
OpenJDK 64-Bit Server VM AdoptOpenJDK (build 11.0.8+10, mixed mode)
---
Spring CLI v2.3.4.RELEASE
---
Apache Maven 3.5.4 (1edded0938998edf8bf061f1ceb3cfdeccf443fe; 2018-06-17T21:33:14+03:00)
Maven home: /usr/local/Cellar/maven#3.5/3.5.4_1/libexec
Java version: 11.0.8, vendor: AdoptOpenJDK, runtime: /Library/Java/JavaVirtualMachines/adoptopenjdk-11.jdk/Contents/Home
Default locale: en_GB, platform encoding: UTF-8
OS name: "mac os x", version: "10.14.6", arch: "x86_64", family: "mac"
Here is the whole codebase: Codebase
Run with command:
docker-compose up --build --remove-orphans
My docker-compose.yml (The commented out stuff is things I tried):
version: "3.8"
services:
genesysmysql:
container_name: genesysmysql
# container_name: genesysmysql_container
image: "mysql:8.0.21"
restart: always
environment:
- MYSQL_ROOT_PASSWORD=root
- MYSQL_DATABASE=db_example
- MYSQL_USER=springuser
- MYSQL_PASSWORD=ThePassword
ports:
- 3306:3306
volumes:
- ./setup.sql:/docker-entrypoint-initdb.d/setup.sql:ro
healthcheck:
test: [ "CMD", "mysqladmin" ,"ping", "-h", "localhost" ]
timeout: 20s
retries: 20
genesys:
build: .
ports:
- 8080:8080
depends_on:
genesysmysql:
condition: service_healthy
environment:
- spring.datasource.jdbc-url=jdbc:genesysmysql://db_example:3306?useSSL=false&allowPublicKeyRetrieval=true&autoReconnect=true
# - spring.datasource.jdbc-url=jdbc:genesysmysql://db_example:3306?useSSL=false&allowPublicKeyRetrieval=true&serverTimezone=UTC&autoReconnect=true
- spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
# - spring.datasource.username=root
# - spring.datasource.password=root
# - spring.datasource.username=springuser
# - spring.datasource.password=ThePassword
# - spring.jpa.hibernate.ddl-auto=create-drop
- spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.MySQL5Dialect
# - spring.data.jpa.repositories.enabled=true
# - spring.jpa.database-platform=org.hibernate.dialect.MySQL5Dialect
# - spring.jpa.generate-ddl=true
My setup.sql script:
CREATE DATABASE db_example;
CREATE USER 'springuser'#'%' IDENTIFIED BY 'ThePassword';
GRANT ALL ON db_example.* to 'springuser'#'%';
GRANT ALL ON db_example.* TO 'springuser'#'localhost';
GRANT ALL ON db_example.* TO 'springuser'#'genesysmysql_container';
GRANT ALL ON db_example.* TO 'springuser'#'genesysmysql';
My dockerfile:
FROM adoptopenjdk/openjdk11:alpine
MAINTAINER atkuzmanov <https://github.com/atkuzmanov>
RUN addgroup -S spring && adduser -S spring -G spring
USER spring:spring
ARG JAR_FILE=target/*.jar
COPY ${JAR_FILE} app.jar
EXPOSE 8080
ENTRYPOINT ["java","-jar","/app.jar"]
My application.properties file:
### Spring properties
spring.application.name=#project.name#
#spring.output.ansi.console-available=true
#server.port=8080
spring.output.ansi.enabled=ALWAYS
### Spring banner properties
#spring.banner.location=classpath:banner.txt
#spring.main.banner-mode=off
info.app.name=#project.name#
info.app.version=#project.version#
info.app.url=#project.url#
### Spring Actuator properties
## Do not expose or enable the 'shutdown' option in a public production application.
#management.endpoint.shutdown.enabled=true
management.endpoints.web.exposure.include=health,info,httptrace
### Spring Devtools properties
#spring.devtools.add-properties=false
#spring.devtools.restart.log-condition-evaluation-delta=false
#spring.devtools.restart.enabled=false
#spring.devtools.livereload.enabled=false
### Spring logging properties
## Change logging levels as appropriate when debugging
logging.level.=WARN
logging.level.customLogbackLevel=INFO
logging.level.org.springframework=WARN
logging.level.org.springframework.web.servlet.=ERROR
logging.level.org.hibernate=ERROR
logging.level.org.apache.catalina.core.ContainerBase.=WARN
### Spring Distributed Tracing properties
## Zipkin properties
spring.zipkin.enabled=true
spring.zipkin.base-url=http://127.0.0.1:9411/
## Sleuth properties
spring.sleuth.enabled=true
spring.sleuth.sampler.percentage=0.5
#spring.sleuth.web.skipPattern=(^cleanup.*|.+favicon.*)
### Spring Data properties
## These are just to get things started, should be changed afterwards.
#spring.jpa.hibernate.ddl-auto=none
spring.jpa.hibernate.ddl-auto=update
spring.datasource.url=jdbc:mysql://${MYSQL_HOST:localhost}:3306/db_example?useSSL=false&allowPublicKeyRetrieval=true
spring.datasource.username=springuser
spring.datasource.password=ThePassword
#spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.MySQL5
### Spring Open Session properties
### Warning message by default:
## "spring.jpa.open-in-view is enabled by default.
## Therefore, database queries may be performed during view rendering.
## Explicitly configure spring.jpa.open-in-view to disable this warning"
## See:
## RE: spring.jpa.open-in-view Warning
## - <https://stackoverflow.com/questions/30549489/what-is-this-spring-jpa-open-in-view-true-property-in-spring-boot>
## - <https://www.baeldung.com/spring-open-session-in-view>
spring.jpa.open-in-view=true
### Spring Thymeleaf properties
spring.thymeleaf.cache=false
Here are the exception messages:
Exception 1:
Exception 1
Eception 2:
Exception 2
Exception 3:
Exception 3
Exception 4, which encapsulates all of them:
Exception 4
{
"app": "GeneSys",
"logMsgId": "f7b6c3cc-0dce-4eb6-b6c3-cc0dce1eb69c",
"#timestamp": "2020-11-11T11:20:31.822Z",
"#version": "1",
"logger": "org.springframework.boot.SpringApplication",
"level": "ERROR",
"thread": "main",
"stackTrace": "org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'timestampRepository' defined in com.atkuzmanov.genesys.dao.TimestampRepository defined in #EnableJpaRepositories declared on JpaRepositoriesRegistrar.EnableJpaRepositoriesConfiguration: Cannot resolve reference to bean 'jpaMappingContext' while setting bean property 'mappingContext'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jpaMappingContext': Invocation of init method failed; nested exception is javax.persistence.PersistenceException: [PersistenceUnit: default] Unable to build Hibernate SessionFactory; nested exception is org.hibernate.exception.JDBCConnectionException: Unable to open JDBC Connection for DDL execution
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:342)
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:113)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1697)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1442)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:593)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:516)
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:324)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:322)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeansOfType(DefaultListableBeanFactory.java:624)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeansOfType(DefaultListableBeanFactory.java:612)
at org.springframework.data.repository.config.DeferredRepositoryInitializationListener.onApplicationEvent(DeferredRepositoryInitializationListener.java:51)
at org.springframework.data.repository.config.DeferredRepositoryInitializationListener.onApplicationEvent(DeferredRepositoryInitializationListener.java:36)
at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:172)
at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:165)
at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:139)
at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:404)
at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:361)
at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:898)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:554)
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:143)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:758)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:750)
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:315)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1237)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226)
at com.atkuzmanov.genesys.GenesysApplication.main(GenesysApplication.java:15)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:49)
at org.springframework.boot.loader.Launcher.launch(Launcher.java:107)
at org.springframework.boot.loader.Launcher.launch(Launcher.java:58)
at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:88)
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jpaMappingContext': Invocation of init method failed; nested exception is javax.persistence.PersistenceException: [PersistenceUnit: default] Unable to build Hibernate SessionFactory; nested exception is org.hibernate.exception.JDBCConnectionException: Unable to open JDBC Connection for DDL execution
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1794)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:516)
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:324)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:322)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:330)
... 36 common frames omitted
Caused by: javax.persistence.PersistenceException: [PersistenceUnit: default] Unable to build Hibernate SessionFactory; nested exception is org.hibernate.exception.JDBCConnectionException: Unable to open JDBC Connection for DDL execution
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:403)
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
at java.base/java.lang.Thread.run(Thread.java:834)
Caused by: org.hibernate.exception.JDBCConnectionException: Unable to open JDBC Connection for DDL execution
at org.hibernate.exception.internal.SQLStateConversionDelegate.convert(SQLStateConversionDelegate.java:112)
at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:42)
at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:113)
at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:99)
at org.hibernate.resource.transaction.backend.jdbc.internal.DdlTransactionIsolatorNonJtaImpl.getIsolatedConnection(DdlTransactionIsolatorNonJtaImpl.java:69)
at org.hibernate.tool.schema.internal.exec.ImprovedExtractionContextImpl.getJdbcConnection(ImprovedExtractionContextImpl.java:60)
at org.hibernate.tool.schema.internal.exec.ImprovedExtractionContextImpl.getJdbcDatabaseMetaData(ImprovedExtractionContextImpl.java:67)
at org.hibernate.tool.schema.extract.internal.InformationExtractorJdbcDatabaseMetaDataImpl.getTables(InformationExtractorJdbcDatabaseMetaDataImpl.java:333)
at org.hibernate.tool.schema.extract.internal.DatabaseInformationImpl.getTablesInformation(DatabaseInformationImpl.java:120)
at org.hibernate.tool.schema.internal.GroupedSchemaMigratorImpl.performTablesMigration(GroupedSchemaMigratorImpl.java:65)
at org.hibernate.tool.schema.internal.AbstractSchemaMigrator.performMigration(AbstractSchemaMigrator.java:207)
at org.hibernate.tool.schema.internal.AbstractSchemaMigrator.doMigration(AbstractSchemaMigrator.java:114)
at org.hibernate.tool.schema.spi.SchemaManagementToolCoordinator.performDatabaseAction(SchemaManagementToolCoordinator.java:184)
at org.hibernate.tool.schema.spi.SchemaManagementToolCoordinator.process(SchemaManagementToolCoordinator.java:73)
at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:316)
at org.hibernate.boot.internal.SessionFactoryBuilderImpl.build(SessionFactoryBuilderImpl.java:469)
at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:1259)
at org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory(SpringHibernateJpaPersistenceProvider.java:58)
at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:365)
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:391)
... 4 common frames omitted
Caused by: com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure
The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:836)
at com.mysql.cj.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:456)
at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:246)
at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:197)
at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138)
at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:358)
at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:206)
at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:477)
at com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:560)
at com.zaxxer.hikari.pool.HikariPool.<init>(HikariPool.java:115)
at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:112)
at org.hibernate.engine.jdbc.connections.internal.DatasourceConnectionProviderImpl.getConnection(DatasourceConnectionProviderImpl.java:122)
at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator$ConnectionProviderJdbcConnectionAccess.obtainConnection(JdbcEnvironmentInitiator.java:180)
at org.hibernate.resource.transaction.backend.jdbc.internal.DdlTransactionIsolatorNonJtaImpl.getIsolatedConnection(DdlTransactionIsolatorNonJtaImpl.java:43)
... 19 common frames omitted
Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure
The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:490)
at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91)
at com.mysql.cj.NativeSession.connect(NativeSession.java:144)
at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:956)
at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:826)
... 32 common frames omitted
Caused by: java.net.ConnectException: Connection refused (Connection refused)
at java.base/java.net.PlainSocketImpl.socketConnect(Native Method)
at java.base/java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:399)
at java.base/java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:242)
at java.base/java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:224)
at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:403)
at java.base/java.net.Socket.connect(Socket.java:609)
at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155)
at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65)
... 35 common frames omitted
",
"message": "Application run failed",
"method": "reportFailure",
"class": "org.springframework.boot.SpringApplication"
}

To fix it you just need to change parameter spring.datasource.jdbc-url to spring.datasource.url and connection string to jdbc:mysql://genesysmysql:3306/db_example?useSSL=false&allowPublicKeyRetrieval=true&autoReconnect=true. Your connection string has an error.

Handle database down in Spring Boot

I would like to test on my system if the database is down with Spring Boot. I have written a rest call for testing. When the database is up, it return "test" which is correct result. But the database is down, it return nothing.
The Goal is to make it to return "test" even the database is down. Below is the error
2020-04-27 17:27:00.003 ERROR 9536 [] --- [pool-1-thread-1] o.s.s.s.TaskUtils$LoggingErrorHandler : Unexpected error occurred in scheduled task.
org.springframework.transaction.CannotCreateTransactionException: Could not open JPA EntityManager for transaction; nested exception is org.hibernate.exception.JDBCConnectionException: Unable to acquire JDBC Connection
at org.springframework.orm.jpa.JpaTransactionManager.doBegin(JpaTransactionManager.java:450)
at org.springframework.transaction.support.AbstractPlatformTransactionManager.getTransaction(AbstractPlatformTransactionManager.java:378)
at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:137)
at org.springframework.session.jdbc.JdbcOperationsSessionRepository.cleanUpExpiredSessions(JdbcOperationsSessionRepository.java:589)
at org.springframework.session.jdbc.config.annotation.web.http.JdbcHttpSessionConfiguration.lambda$configureTasks$0(JdbcHttpSessionConfiguration.java:194)
at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54)
at org.springframework.scheduling.concurrent.ReschedulingRunnable.run(ReschedulingRunnable.java:93)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
Caused by: org.hibernate.exception.JDBCConnectionException: Unable to acquire JDBC Connection
at org.hibernate.exception.internal.SQLExceptionTypeDelegate.convert(SQLExceptionTypeDelegate.java:48)
at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:42)
at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:111)
at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:97)
at org.hibernate.resource.jdbc.internal.LogicalConnectionManagedImpl.acquireConnectionIfNeeded(LogicalConnectionManagedImpl.java:109)
at org.hibernate.resource.jdbc.internal.LogicalConnectionManagedImpl.getPhysicalConnection(LogicalConnectionManagedImpl.java:136)
at org.hibernate.resource.jdbc.internal.LogicalConnectionManagedImpl.getConnectionForTransactionManagement(LogicalConnectionManagedImpl.java:254)
at org.hibernate.resource.jdbc.internal.LogicalConnectionManagedImpl.begin(LogicalConnectionManagedImpl.java:262)
at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl$TransactionDriverControlImpl.begin(JdbcResourceLocalTransactionCoordinatorImpl.java:214)
at org.hibernate.engine.transaction.internal.TransactionImpl.begin(TransactionImpl.java:56)
at org.springframework.orm.jpa.vendor.HibernateJpaDialect.beginTransaction(HibernateJpaDialect.java:162)
at org.springframework.orm.jpa.JpaTransactionManager.doBegin(JpaTransactionManager.java:400)
... 13 common frames omitted
Caused by: java.sql.SQLTransientConnectionException: HikariCP - Connection is not available, request timed out after 60000ms.
at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:669)
at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:183)
at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:148)
at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128)
at org.hibernate.engine.jdbc.connections.internal.DatasourceConnectionProviderImpl.getConnection(DatasourceConnectionProviderImpl.java:122)
at org.hibernate.internal.NonContextualJdbcConnectionAccess.obtainConnection(NonContextualJdbcConnectionAccess.java:35)
at org.hibernate.resource.jdbc.internal.LogicalConnectionManagedImpl.acquireConnectionIfNeeded(LogicalConnectionManagedImpl.java:106)
... 20 common frames omitted
Caused by: org.postgresql.util.PSQLException: Connection to X:X:X:X:xxxx refused. Check that the hostname and port are correct and that the postmaster is accepting TCP/IP connections.
at org.postgresql.core.v3.ConnectionFactoryImpl.openConnectionImpl(ConnectionFactoryImpl.java:280)
at org.postgresql.core.ConnectionFactory.openConnection(ConnectionFactory.java:49)
at org.postgresql.jdbc.PgConnection.<init>(PgConnection.java:195)
at org.postgresql.Driver.makeConnection(Driver.java:454)
at org.postgresql.Driver.connect(Driver.java:256)
at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:117)
at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:123)
at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:365)
at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:194)
at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:460)
at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71)
at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:699)
at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:685)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
... 3 common frames omitted
Caused by: java.net.ConnectException: Connection refused (Connection refused)
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
at java.net.Socket.connect(Socket.java:589)
at org.postgresql.core.PGStream.<init>(PGStream.java:70)
at org.postgresql.core.v3.ConnectionFactoryImpl.tryConnect(ConnectionFactoryImpl.java:91)
at org.postgresql.core.v3.ConnectionFactoryImpl.openConnectionImpl(ConnectionFactoryImpl.java:192)
... 16 common frames omitted
And the test controller is in below
#RestController
public class TestController {
#GetMapping(value = "/test")
public String test() {
System.out.println("test");
return "Test";
}
}
the application.properties is like below
spring.datasource.hikari.maximumPoolSize=10
spring.datasource.hikari.idleTimeout=50000
spring.datasource.hikari.maxLifetime=2000000
spring.datasource.hikari.connectionTimeout=60000
spring.datasource.continue-on-error=true
spring.datasource.initialization-mode=never
spring.datasource.hikari.pool-name=KlmsHikariCP
spring.datasource.hikari.connection-test-query=SELECT 1
spring.datasource.hikari.initialization-fail-timeout= -1
spring.datasource.hikari.isolate-internal-queries=true
spring.datasource.hikari.allow-pool-suspension=true
spring.datasource.test-while-idle=true
spring.datasource.test-on-borrow=true
spring.datasource.test-on-return=false
spring.datasource.validation-interval=40000
spring.datasource.validation-query=SELECT 1 FROM DUAL
spring.datasource.time-between-eviction-runs-millis=5000
spring.datasource.min-evictable-idle-time-millis=5000
spring.datasource.remove-abandoned=true
spring.datasource.remove-abandoned-timeout=3
spring.datasource.log-abandoned=true
spring.datasource.log-validation-errors=true
################### Hibernate Configuration ##########################
spring.jpa.hibernate.ddl-auto=none
spring.jpa.show-sql=false
spring.jpa.properties.hibernate.temp.use_jdbc_metadata_defaults=true
spring.jpa.database-platform=org.hibernate.dialect.PostgreSQLDialect

Do you mean during the startup of Spring or while the application is running?
Your RestController currently does not access the DB so I fail to see how the DB connection could result in errors and if the DB is down the controller should return "Test".
If you mean during startup you can try:
spring.datasource.continue-on-error=true

Check that the hostname and port are correct and that the postmaster
is accepting TCP/IP connections.
Check that the hostname and port are correct and that the postmaster is accepting TCP/IP connections.

Cause of error if Caused by: org.postgresql.util.PSQLException: Connection to X:X:X:X:xxxx refused. Check that the hostname and port are correct and that the postmaster is accepting TCP/IP connections.
Please make sure the database host and port in your application.properties file are mentioned and are correct and also the database instance is up and running in mentioned host.

Could not complete schema update: org.h2.jdbc.JdbcSQLException: Table "PG_CLASS" not found; SQL statement

I have next problem when deploy application on openshift. I use a wildfly application server and PostgreSQL cartrige.
In persistence.xml i set property "hibernate.hbm2ddl.auto" value="update". In wildfly modules in org/main/postgresql i see that wildfly use postgresql-9.3-1102-jdbc41.jar
12:12:14,760 ERROR [org.hibernate.tool.hbm2ddl.SchemaUpdate] (ServerService Thread Pool -- 62) HHH000319: Could not get database metadata: org.h2.jdbc.JdbcSQLException: Table "PG_CLASS" not found; SQL statement:
select relname from pg_class where relkind='S' [42102-173]
at org.h2.message.DbException.getJdbcSQLException(DbException.java:331)
at org.h2.message.DbException.get(DbException.java:171)
at org.h2.message.DbException.get(DbException.java:148)
at org.h2.command.Parser.readTableOrView(Parser.java:4864)
at org.h2.command.Parser.readTableFilter(Parser.java:1107)
at org.h2.command.Parser.parseSelectSimpleFromPart(Parser.java:1713)
at org.h2.command.Parser.parseSelectSimple(Parser.java:1821)
at org.h2.command.Parser.parseSelectSub(Parser.java:1707)
at org.h2.command.Parser.parseSelectUnion(Parser.java:1550)
at org.h2.command.Parser.parseSelect(Parser.java:1538)
at org.h2.command.Parser.parsePrepared(Parser.java:405)
at org.h2.command.Parser.parse(Parser.java:279)
at org.h2.command.Parser.parse(Parser.java:251)
at org.h2.command.Parser.prepareCommand(Parser.java:218)
at org.h2.engine.Session.prepareLocal(Session.java:428)
at org.h2.engine.Session.prepareCommand(Session.java:377)
at org.h2.jdbc.JdbcConnection.prepareCommand(JdbcConnection.java:1138)
at org.h2.jdbc.JdbcStatement.executeQuery(JdbcStatement.java:72)
at org.jboss.jca.adapters.jdbc.WrappedStatement.executeQuery(WrappedStatement.java:344)
at org.hibernate.tool.hbm2ddl.DatabaseMetadata.initSequences(DatabaseMetadata.java:178) [hibernate-core-4.3.7.Final.jar:4.3.7.Final]
at org.hibernate.tool.hbm2ddl.DatabaseMetadata.<init>(DatabaseMetadata.java:92) [hibernate-core-4.3.7.Final.jar:4.3.7.Final]
at org.hibernate.tool.hbm2ddl.DatabaseMetadata.<init>(DatabaseMetadata.java:84) [hibernate-core-4.3.7.Final.jar:4.3.7.Final]
at org.hibernate.tool.hbm2ddl.SchemaUpdate.execute(SchemaUpdate.java:196) [hibernate-core-4.3.7.Final.jar:4.3.7.Final]
at org.hibernate.tool.hbm2ddl.SchemaUpdate.execute(SchemaUpdate.java:178) [hibernate-core-4.3.7.Final.jar:4.3.7.Final]
at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:522) [hibernate-core-4.3.7.Final.jar:4.3.7.Final]
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1859) [hibernate-core-4.3.7.Final.jar:4.3.7.Final]
at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl$4.perform(EntityManagerFactoryBuilderImpl.java:852) [hibernate-entitymanager-4.3.7.Final.jar:4.3.7.Final]
at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl$4.perform(EntityManagerFactoryBuilderImpl.java:845) [hibernate-entitymanager-4.3.7.Final.jar:4.3.7.Final]
at org.hibernate.boot.registry.classloading.internal.ClassLoaderServiceImpl.withTccl(ClassLoaderServiceImpl.java:398) [hibernate-core-4.3.7.Final.jar:4.3.7.Final]
at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:844) [hibernate-entitymanager-4.3.7.Final.jar:4.3.7.Final]
at org.jboss.as.jpa.hibernate4.TwoPhaseBootstrapImpl.build(TwoPhaseBootstrapImpl.java:44) [jipijapa-hibernate4-3-1.0.1.Final.jar:]
at org.jboss.as.jpa.service.PersistenceUnitServiceImpl$1$1.run(PersistenceUnitServiceImpl.java:154) [wildfly-jpa-8.2.0.Final.jar:8.2.0.Final]
at org.jboss.as.jpa.service.PersistenceUnitServiceImpl$1$1.run(PersistenceUnitServiceImpl.java:117) [wildfly-jpa-8.2.0.Final.jar:8.2.0.Final]
at java.security.AccessController.doPrivileged(Native Method) [rt.jar:1.8.0_05]
at org.wildfly.security.manager.WildFlySecurityManager.doChecked(WildFlySecurityManager.java:474) [wildfly-security-manager-1.0.0.Final.jar:1.0.0.Final]
at org.jboss.as.jpa.service.PersistenceUnitServiceImpl$1.run(PersistenceUnitServiceImpl.java:182) [wildfly-jpa-8.2.0.Final.jar:8.2.0.Final]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [rt.jar:1.8.0_05]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [rt.jar:1.8.0_05]
at java.lang.Thread.run(Thread.java:745) [rt.jar:1.8.0_05]
at org.jboss.threads.JBossThread.run(JBossThread.java:122) [jboss-threads-2.1.1.Final.jar:2.1.1.Final]
I'am use a hibernate as JPA (hibernate-core-4.3.6). And i think that this problem with different version of Postgresql 9.2 and 9.3 Can anybody explain me how to change hibernate dialect at 9.2 Postgres version or change postgresql library module on openshift?

I just changed the hibernate property hibernate.hbm2ddl.auto to create. This resolved the issue for me.

Had the same error recently. Please open your wildfly's standalone.xml (or standalone-full.xml or whichever you are using) and find and delete the following fragment:
<default-bindings contextservice="java:jboss/ee/concurrency/context/default" datasource="java:jboss/datasources/ExampleDS" jms-connection factory="java:jboss/DefaultJMSConnectionFactory" managed-executor-service="java:jboss/ee/concurrency/executor/default" managed-scheduled-executor-service="java:jboss/ee/concurrency/scheduler/default" managed-thread-factory="java:jboss/ee/concurrency/factory/default"/>
Important: Make sure to shut wildfly down before editing, otherwise it will overwrite the changes the next time it shuts down.

You need this property
spring.jpa.database-platform=org.hibernate.dialect.H2Dialect

1) check if you are using correct dialect in application.properties
spring.jpa.database-platform
2) and check the value of spring.jpa.hibernate.ddl-auto

spring.jpa.database-platform solved my problem

I saw this exception when I also had an inconsistency with my entity and persistence metamodel classes (e.g. Customer_.java). That inconsistency was also reported by wildfly. It disappeared when I resolved that inconsistencies.