Spring Boot -Hibernate 5 simple application initializing in 3 minutes - spring

Question

I am using Spring boot with Hibernate to connect with Oracle database. The application works fine but when I run the application with Dddl.auto flag set to update it takes 3 minutes just to initialize the entity manager. here are my model classes and cfg.xml.
Hibernate.cfg.xml
<?xml version = "1.0" encoding = "utf-8"?>
<!DOCTYPE hibernate-configuration SYSTEM
"classpath://org/hibernate/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
<property name="hibernate.connection.driver_class">oracle.jdbc.OracleDriver</property>
<property name="hibernate.connection.url">jdbc:oracle:thin:#hhhh.cpckubosallr.ap-south-1.rds.amazonaws.com:1610:gghg</property>
<property name="hibernate.connection.username">DEMO</property>
<property name="hibernate.connection.password">ggggg#78GHTd</property>
<property name="hibernate.dialect">org.hibernate.dialect.Oracle12cDialect</property>
<property name="show_sql">true</property>
<property name="hibernate.connection.pool_size">5</property>
<property name="cache.provider_class">org.hibernate.cache.NoCacheProvider</property>
<property name="hbm2ddl.auto">update</property>
<mapping class ="student.mappings.model.Student" />
<mapping class ="student.mappings.model.Vehicle" />
<mapping class ="student.mappings.model.Subject" />
</session-factory>
</hibernate-configuration>
Model classes:
#Entity
#Table(name="STUDENT", schema="JAVACODE")
public class Student
{
#Id
#GeneratedValue(strategy=GenerationType.AUTO)
private Long id;
#Column(name="name")
private String name;
#OneToOne(cascade=CascadeType.ALL)
#JoinColumn(name="vehicle_id")
private Vehicle vehicle;
#Override
public String toString() {
return "Student [id=" + id + ", name=" + name + ", vehicle=" + vehicle + ", subject=" + subject + "]";
}
public Vehicle getVehicle()
{
return vehicle;
}
public void setVehicle(Vehicle vehicle)
{
this.vehicle = vehicle;
}
#OneToMany(cascade=CascadeType.ALL)
#JoinColumn(name="subject_id")
private List<Subject> subject;
public List<Subject> getSubject()
{
return subject;
}
public void setSubject(List<Subject> subject)
{
this.subject = subject;
}
public Student(Long id, String name, Vehicle vehicle, List<Subject> subject)
{
super();
this.id = id;
this.name = name;
this.vehicle = vehicle;
this.subject = subject;
}
public Long getId()
{
return id;
}
public void setId(Long id)
{
this.id = id;
}
public String getName()
{
return name;
}
public void setName(String name)
{
this.name = name;
}
public Student()
{
super();
}
public Student(Long id, String name)
{
super();
this.id = id;
this.name = name;
}
public Student(Long id, String name, Vehicle vehicle) {
super();
this.id = id;
this.name = name;
this.vehicle = vehicle;
}
}
Application.java:
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.autoconfigure.domain.EntityScan;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.PropertySource;
import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
#SpringBootApplication
#ComponentScan("student.mappings")
#EntityScan("student.mappings")
#PropertySource(value= {"classpath:application.properties"})
public class StudentMappingsTemplateClient
{
public static void main(String[] args) {
SpringApplication.run(StudentMappingsTemplateClient.class, args);
}
}