Getting Next value from sequence with spring hibernate

Finally I Solved my problem in the Spring way, All you need is to add a native query in the JpaRepository like this:

public interface EventRepository extends JpaRepository<Event, Long> {

 @Query(value = "SELECT seq_name.nextval FROM dual", nativeQuery = 
        true)
 Long getNextSeriesId();

With Spring 5, you can use one of their built-in classes for this task like OracleSequenceMaxValueIncrementer

See all the available options in this package: https://docs.spring.io/spring/docs/current/javadoc-api/org/springframework/jdbc/support/incrementer/package-summary.html

Annotate your id property like so:

@Id
@GeneratedValue(generator = "idSequence")
@SequenceGenerator(schema = "MYORASCHEMA", name = "idSequence", sequenceName = "MY_ORACLE_SEQ_NAME", allocationSize = 1)
@Column(name="ID")
private Long id;