Non jta and autocommit

Question

i am using mysql, tomcat and toplink. how to set autocommit off?

Answer 1

my persistence.xml is this
<?xml version="1.0" encoding="UTF-8"?>
<persistence version="1.0" xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd">
<persistence-unit name="SeleccionsCatPU" transaction-type="RESOURCE_LOCAL">
<provider>oracle.toplink.essentials.ejb.cmp3.EntityManagerFactoryProvider</provider>
<non-jta-data-source>java:comp/env/jdbc/selcat</non-jta-data-source>
<class>com.xlives.selcat.prueba.Prueba</class>
<properties>
<property name="toplink.session.customizer" value="com.xlives.system.jpa.DataSourceSessionCustomizer"/>
<property name="toplink.logging.level" value="FINEST"/>
</properties>
</persistence-unit>
</persistence>
and my customizer is this
JNDIConnector conn = (JNDIConnector)session.getLogin().getConnector();
conn.setLookupType(JNDIConnector.STRING_LOOKUP);
session.getLogin().setTransactionIsolation(DatabaseLogin.TRANSACTION_READ_COMMITTED);
my code is
EntityTransaction et = em.getTransaction();
Prueba p = new Prueba();
em.persist(p);
p = new Prueba();
em.persist(p);
Query q = em.createQuery("SELECT p FROM Prueba p");
List<Prueba> results = q.getResultList();
System.out.println(new Date());
for (Prueba a: results) {
// System.out.println(a.getFecha());
Date b = a.getFecha();
et.rollback();
after rollback the transaction the table PRUEBA has 2 more rows.