UnsupportedOperationException 발생

package hellojpa;

import javax.persistence.Entity;
import javax.persistence.Id;

@Entity
public class Member {

    @Id
    private Long id;
    private String name;

    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;
    }
}

package hellojpa;

import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.EntityTransaction;
import javax.persistence.Persistence;

public class JpaMain {

    public static void main(String[] args) {
        EntityManagerFactory emf = Persistence.createEntityManagerFactory("hello");

        EntityManager em = emf.createEntityManager();

        EntityTransaction tx = em.getTransaction();
        tx.begin();

        Member member = new Member();
        member.setId(1L);
        member.setName("HelloA");

        em.persist(member);

        tx.commit();

        em.close();

        emf.close();

    }
}

C:\Users\User\.jdks\temurin-21.0.9\bin\java.exe "-javaagent:C:\Program Files\JetBrains\IntelliJ IDEA 2025.2.2\lib\idea_rt.jar=65054" -Dfile.encoding=UTF-8 -Dsun.stdout.encoding=UTF-8 -Dsun.stderr.encoding=UTF-8 -classpath C:\study\ex1-hello-jpa\ex1-hello-jpa\target\classes;C:\Users\User\.m2\repository\javax\xml\bind\jaxb-api\2.3.0\jaxb-api-2.3.0.jar;C:\Users\User\.m2\repository\org\hibernate\hibernate-entitymanager\5.3.10.Final\hibernate-entitymanager-5.3.10.Final.jar;C:\Users\User\.m2\repository\org\jboss\logging\jboss-logging\3.3.2.Final\jboss-logging-3.3.2.Final.jar;C:\Users\User\.m2\repository\org\hibernate\hibernate-core\5.3.10.Final\hibernate-core-5.3.10.Final.jar;C:\Users\User\.m2\repository\org\javassist\javassist\3.23.2-GA\javassist-3.23.2-GA.jar;C:\Users\User\.m2\repository\antlr\antlr\2.7.7\antlr-2.7.7.jar;C:\Users\User\.m2\repository\org\jboss\jandex\2.0.5.Final\jandex-2.0.5.Final.jar;C:\Users\User\.m2\repository\com\fasterxml\classmate\1.3.4\classmate-1.3.4.jar;C:\Users\User\.m2\repository\javax\activation\javax.activation-api\1.2.0\javax.activation-api-1.2.0.jar;C:\Users\User\.m2\repository\org\dom4j\dom4j\2.1.1\dom4j-2.1.1.jar;C:\Users\User\.m2\repository\org\hibernate\common\hibernate-commons-annotations\5.0.4.Final\hibernate-commons-annotations-5.0.4.Final.jar;C:\Users\User\.m2\repository\javax\persistence\javax.persistence-api\2.2\javax.persistence-api-2.2.jar;C:\Users\User\.m2\repository\net\bytebuddy\byte-buddy\1.9.5\byte-buddy-1.9.5.jar;C:\Users\User\.m2\repository\org\jboss\spec\javax\transaction\jboss-transaction-api_1.2_spec\1.1.1.Final\jboss-transaction-api_1.2_spec-1.1.1.Final.jar;C:\Users\User\.m2\repository\com\h2database\h2\1.4.199\h2-1.4.199.jar hellojpa.JpaMain

1월 13, 2026 3:42:37 오후 org.hibernate.jpa.internal.util.LogHelper logPersistenceUnitInformation

INFO: HHH000204: Processing PersistenceUnitInfo [

name: hello

...]

1월 13, 2026 3:42:37 오후 org.hibernate.Version logVersion

INFO: HHH000412: Hibernate Core {5.3.10.Final}

1월 13, 2026 3:42:37 오후 org.hibernate.cfg.Environment <clinit>

INFO: HHH000206: hibernate.properties not found

1월 13, 2026 3:42:37 오후 org.hibernate.annotations.common.reflection.java.JavaReflectionManager <clinit>

INFO: HCANN000001: Hibernate Commons Annotations {5.0.4.Final}

1월 13, 2026 3:42:38 오후 org.hibernate.engine.jdbc.connections.internal.ConnectionProviderInitiator initiateService

WARN: HHH000181: No appropriate connection provider encountered, assuming application will be supplying connections

1월 13, 2026 3:42:38 오후 org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator initiateService

WARN: HHH000342: Could not obtain connection to query metadata : The application must supply JDBC connections

1월 13, 2026 3:42:38 오후 org.hibernate.dialect.Dialect <init>

INFO: HHH000400: Using dialect: org.hibernate.dialect.H2Dialect

1월 13, 2026 3:42:38 오후 org.hibernate.engine.jdbc.env.internal.LobCreatorBuilderImpl makeLobCreatorBuilder

INFO: HHH000422: Disabling contextual LOB creation as connection was null

Exception in thread "main" java.lang.UnsupportedOperationException: The application must supply JDBC connections

at org.hibernate.engine.jdbc.connections.internal.UserSuppliedConnectionProviderImpl.getConnection(UserSuppliedConnectionProviderImpl.java:44)

at org.hibernate.internal.NonContextualJdbcConnectionAccess.obtainConnection(NonContextualJdbcConnectionAccess.java:35)

at org.hibernate.resource.jdbc.internal.LogicalConnectionManagedImpl.acquireConnectionIfNeeded(LogicalConnectionManagedImpl.java:106)

at org.hibernate.resource.jdbc.internal.LogicalConnectionManagedImpl.getPhysicalConnection(LogicalConnectionManagedImpl.java:136)

at org.hibernate.resource.jdbc.internal.LogicalConnectionManagedImpl.getConnectionForTransactionManagement(LogicalConnectionManagedImpl.java:254)

at org.hibernate.resource.jdbc.internal.LogicalConnectionManagedImpl.begin(LogicalConnectionManagedImpl.java:262)

at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl$TransactionDriverControlImpl.begin(JdbcResourceLocalTransactionCoordinatorImpl.java:236)

at org.hibernate.engine.transaction.internal.TransactionImpl.begin(TransactionImpl.java:86)

at hellojpa.JpaMain.main(JpaMain.java:16)

Process finished with exit code 1

이거 에러 발생한 이유가 뭘까요? 강의 러닝타임은 11분대입니다.