Exception in thread "main" org.hibernate.HibernateException: Access to DialectResolutionInfo cannot be null when 'hibernate.dialect' not set

Exception in thread "main" org.hibernate.HibernateException: Access to DialectResolutionInfo cannot be null when 'hibernate.dialect' not set
    at org.hibernate.engine.jdbc.dialect.internal.DialectFactoryImpl.determineDialect(DialectFactoryImpl.java:104)
    at org.hibernate.engine.jdbc.dialect.internal.DialectFactoryImpl.buildDialect(DialectFactoryImpl.java:71)
    at org.hibernate.engine.jdbc.internal.JdbcServicesImpl.configure(JdbcServicesImpl.java:209)
    at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.configureService(StandardServiceRegistryImpl.java:111)
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:234)
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:206)
    at org.hibernate.cfg.Configuration.buildTypeRegistrations(Configuration.java:1885)
    at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1843)
    at com.ranga.MultiTenancyDemo.main(MultiTenancyDemo.java:34)
 

Problem:

// Create the SessionFactory from hibernate.cfg.xml
        Configuration configuration = new Configuration();
       
         System.out.println("Hibernate Configuration loaded.");
       
        //apply configuration property settings to StandardServiceRegistryBuilder
        serviceRegistry = new StandardServiceRegistryBuilder().applySettings(
                configuration.getProperties()).build();
        System.out.println("Hibernate serviceRegistry created.");
       
        sessionFactory = configuration.buildSessionFactory(serviceRegistry);
        System.out.println("Hibernate sessionFactory object created.");    

Solution:

After creation of Configuration object, we need to call the         configuration.configure("hibernate.cfg.xml"); method.