018-01-31 14:21:38 INFO  org.hibernate.jpa.internal.util.LogHelper     - HHH000204: Processing PersistenceUnitInfo [
    name: persistence_unit_meudb
    ...]
2018-01-31 14:21:38 WARN  org.hibernate.orm.connections     - HHH10001002: Using Hibernate built-in connection pool (not for production use!)
2018-01-31 14:21:38 INFO  org.hibernate.orm.connections     - HHH10001005: using driver [com.mysql.jdbc.Driver] at URL [jdbc:mysql://localhost:3306/meudb]
2018-01-31 14:21:38 INFO  org.hibernate.orm.connections     - HHH10001001: Connection properties: {user=root, password=****}
2018-01-31 14:21:38 INFO  org.hibernate.orm.connections     - HHH10001003: Autocommit mode: false
2018-01-31 14:21:38 INFO  org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl     - HHH000115: Hibernate connection pool size: 20 (min=1)
2018-01-31 14:21:38 INFO  org.hibernate.dialect.Dialect     - HHH000400: Using dialect: org.hibernate.dialect.MySQLDialect
2018-01-31 14:21:42 INFO  org.hibernate.jpa.internal.util.LogHelper     - HHH000204: Processing PersistenceUnitInfo [
    name: persistence_unit_meudb
    ...]
2018-01-31 14:21:42 WARN  org.hibernate.orm.connections     - HHH10001002: Using Hibernate built-in connection pool (not for production use!)
2018-01-31 14:21:42 INFO  org.hibernate.orm.connections     - HHH10001005: using driver [com.mysql.jdbc.Driver] at URL [jdbc:mysql://localhost:3306/meudb]
2018-01-31 14:21:42 INFO  org.hibernate.orm.connections     - HHH10001001: Connection properties: {user=root, password=****}
2018-01-31 14:21:42 INFO  org.hibernate.orm.connections     - HHH10001003: Autocommit mode: false
2018-01-31 14:21:42 INFO  org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl     - HHH000115: Hibernate connection pool size: 20 (min=1)
2018-01-31 14:21:42 INFO  org.hibernate.dialect.Dialect     - HHH000400: Using dialect: org.hibernate.dialect.MySQLDialect
2018-01-31 14:21:45 WARN  org.hibernate.jpa.internal.EntityManagerFactoryRegistry     - HHH000436: Entity manager factory name (persistence_unit_meudb) is already registered.  If entity manager will be clustered or passivated, specify a unique value for property 'hibernate.ejb.entitymanager_factory_name'
Antes do Try: 2018-01-31 14:21:45.345
2018-01-31 14:21:45 INFO  org.hibernate.hql.internal.QueryTranslatorFactoryInitiator     - HHH000397: Using ASTQueryTranslatorFactory
Hibernate:
    select
        [ Campos ]
    from
        tbusuario usuario0_
    where
        usuario0_.login=?
Antes do Return: 2018-01-31 14:21:45.387
2018-01-31 14:21:45 INFO  org.hibernate.orm.connections     - HHH10001008: Cleaning up connection pool [jdbc:mysql://localhost:3306/meudb]
2018-01-31 14:21:45 INFO  org.hibernate.orm.connections     - HHH10001008: Cleaning up connection pool [jdbc:mysql://localhost:3306/meudb]
Antes do Return: 2018-01-31 14:21:45.389

<?xml version="1.0" encoding="UTF-8"?>
<persistence xsi:schemaLocation="http://java.sun.com/xml/ns/persistence
                                http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd"
             version="2.0"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xmlns="http://java.sun.com/xml/ns/persistence">

   <persistence-unit name="persistence_unit_meudb" transaction-type="RESOURCE_LOCAL">
      <provider>org.hibernate.ejb.HibernatePersistence</provider>
      <properties>
         <property name="hibernate.dialect" value="org.hibernate.dialect.MySQLDialect"/>
         <property name="javax.persistence.jdbc.driver" value="com.mysql.jdbc.Driver"/>
         <property name="javax.persistence.jdbc.url" value="jdbc:mysql://localhost:3306/meudb"/>
         <property name="javax.persistence.jdbc.user" value="root"/>
         <property name="javax.persistence.jdbc.password" value="root"/>
         <property name="hibernate.show_sql" value="true"/>
         <property name="hibernate.format_sql" value="true"/>

         <property name="hibernate.hbm2ddl.auto" value="update"/>
      </properties>
   </persistence-unit>
</persistence>

<property name="hibernate.show_sql" value="true"/>
 <property name="hibernate.format_sql" value="true"/>

 <property name="hibernate.hbm2ddl.auto" value="update"/>