JPA Uppercase table names

You can configure your application with the next line depend the database:

MySql

spring.jpa.hibernate.naming_strategy = org.hibernate.cfg.DefaultNamingStrategy

Postgres

spring.jpa.database-platform=org.hibernate.dialect.PostgreSQLDialect

Oracle

spring.jpa.database-platform=org.hibernate.dialect.Oracle10gDialect

maybe because you are using MYSQL5DIALECT there's a Postgres Dialect just used post it like this and for the improved naming strategy use EJB3 like Spring boot JPA insert in TABLE with uppercase name with Hibernate

spring.jpa.database-platform=org.hibernate.dialect.PostgreSQLDialect

hope it works for you

I reproduced your UTILISATEUR table (role removed) in postgres 8.4 and hibernate 5.0.3.

It works as expected with explicit table and column names annotation:

@Entity(name="\"UTILISATEUR\"")
public class Utilisateur {

    @Id
    @GeneratedValue(strategy=GenerationType.AUTO) 
    @Column(name="\"IdUtilisateur\"")
    private Long id ;

    @Column(name="\"Nom\"")
    private String Nom ; 
    @Column(name="\"Prenom\"")
    private String Prenom ; 
    @Column(name="\"Profil\"")
    private String Profil ; 
    @Column(name="\"Pseudo\"")
    private String Pseudo ; 

    @Column(name="\"Password\"")
    private String Password ;

    ... getter / setters

}