How to Fix \'Access to DialectResolutionInfo cannot be null\' in Spring Boot?

Addressing Error "Access to DialectResolutionInfo cannot be null" in Spring Boot with Hibernate

The error message "Access to DialectResolutionInfo cannot be null when 'hibernate.dialect' not set" indicates that the Hibernate configuration lacks a specific database dialect setting. To resolve this, follow these steps:

1. Remove Custom Spring Configuration:
Remove any custom Spring configuration methods related to Hibernate, such as the @Bean methods defined in the HibernateConfig class provided in the question. Spring Boot will automatically configure Hibernate for you.

2. Define Hibernate Properties in application.properties:
Create an application.properties file in your main resources directory and add the following properties:

# Database configuration
spring.datasource.url=jdbc:postgresql://localhost:5432/teste?charSet=LATIN1
spring.datasource.username=klebermo
spring.datasource.password=123

# Hibernate configuration
spring.jpa.database-platform=org.hibernate.dialect.PostgreSQLDialect
spring.jpa.show-sql=false
spring.jpa.hibernate.ddl-auto=create

3. Enable Auto-Configuration:
Add the @SpringBootApplication annotation to your application's main class, which should replace the @EnableAutoConfiguration annotation used in the question.

@SpringBootApplication
public class Application {

    public static void main(String[] args) {
        SpringApplication.run(Application.class, args);
    }

}

By following these steps, your Spring Boot application will automatically configure Hibernate with the necessary settings, including the database dialect, and the error message should be resolved.

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