Sleep 5 sec... Block Table
Jonh (2)
Jonh (1)

@SpringBootApplication
@ImportResource("classpath*:applicationContext.xml")
@EnableScheduling
public class MyApplication {
    public static void main(String[] args) {
        SpringApplication.run(MyApplication.class, args);
    }
}

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xmlns:tx="http://www.springframework.org/schema/tx"
   xmlns:security="http://www.springframework.org/schema/security"
   xsi:schemaLocation="http://www.springframework.org/schema/beans
   http://www.springframework.org/schema/beans/spring-beans.xsd
   http://www.springframework.org/schema/tx
   http://www.springframework.org/schema/tx/spring-tx.xsd
   http://www.springframework.org/schema/security
   http://www.springframework.org/schema/security/spring-security.xsd">

    <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
        <property name="driverClassName" value="com.mysql.jdbc.Driver"/>
        <property name="url" value="jdbc:mysql://localhost:3306/mydb"/>
        <property name="username" value="root"/>
        <property name="password" value="root"/>
    </bean>

    <bean id="hibernate5AnnotatedSessionFactory" class="org.springframework.orm.hibernate5.LocalSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
        <property name="configLocation" value="classpath:hibernate.cfg.xml"/>
        <property name="annotatedClasses">
            <list>
                <value>Person</value>
            </list>
        </property>
    </bean>

    <bean id="transactionManager" class="org.springframework.orm.hibernate5.HibernateTransactionManager">
        <property name="sessionFactory" ref="hibernate5AnnotatedSessionFactory"/>
    </bean>

    <tx:annotation-driven transaction-manager="transactionManager"/>

</beans>

<?xml version='1.0' encoding='utf-8'?>
<!DOCTYPE hibernate-configuration PUBLIC
    "-//Hibernate/Hibernate Configuration DTD//EN"
    "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
  <session-factory>
      <property name="connection.url">jdbc:mysql://localhost:3306/mydb</property>
      <property name="connection.driver_class">com.mysql.jdbc.Driver</property>
      <property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
      <property name="show_sql">true</property>
  </session-factory>
</hibernate-configuration>

@Entity
@Table(name = "person")
public class Person {
    private int id;
    private String name;

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    @Column(name = "id")
    public int getId() {
        return id;
    }

    @Column(name = "name")
    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name=name;
    }

    @Override
    public String toString() {
        return name;
    }
}

@Service(value = "personService")
public class PersonServiceImpl implements PersonService {
    private PersonDAO personDAO;

    @Autowired(required = true)
    @Qualifier(value = "personDAO")
    public void setPersonDAO(PersonDAO personDAO) {
        this.personDAO= personDAO;
    }

    @Scheduled(fixedDelay = 60000)
    public void myMethod() {
        new Thread(new Runnable() {
            @Override
            public void run() {
                try {
                    System.out.println(personDAO.getById(1).toString)+" (1)";
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        }).start();

        // Пауза, чтобы первый поток успел обратится к таблице
        try {
            Thread.sleep(1000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }

        new Thread(new Runnable() {
            @Override
            public void run() {
                try {
                    System.out.println(personDAO.getById(1).toString+" (2)");
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        }).start();
    }
}

@Repository(value = "personDAO")
public class PersonDAOImplimplements PersonDAO {
    private SessionFactory sessionFactory;

    @Autowired(required = true)
    @Qualifier(value = "hibernate5AnnotatedSessionFactory")
    public void setSessionFactory(SessionFactory sessionFactory) {
        this.sessionFactory = sessionFactory;
    }

    boolean firstThread = true;

    @Override
    @Transactional(isolation = Isolation.SERIALIZABLE)
    public Person getById(int id) {
        Person person = this.sessionFactory.getCurrentSession().get(Person.class, new Integer(id));

        if(this.firstThread) {
            this.firstThread=false;

            // Останавливаем поток. Как я понимаю никто не должен получить доступ к Таблице
            System.out.println("Sleep 5 sec... Block Table");

            try {
                Thread.sleep(5000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }

        return person;
    }
}