Problema com transação - JTA

public void save(T entity) {
        em = HibernateUtil.getEntityManager();
        EntityTransaction tx = em.getTransaction();
        try{
            tx.begin();
            em.persist(entity);
            tx.commit();
            em.close(); 
        }catch (Exception e){
            tx.rollback();
            e.printStackTrace();
            e.getCause();
            e.getLocalizedMessage();
        }
        
    }

@PersistenceContext(unitName = "pcp_test_PU")
 private EntityManager em;

@Deployment
	public static WebArchive createTestArchive()
	{
		return ShrinkWrap.create(WebArchive.class,"testUsuario.war")
				.addClasses(Area.class, Atividade.class, CentroCusto.class, ClassificacaoProfissional.class, Cliente.class, Disciplina.class, ControleAcesso.class, Disciplina.class, FaixaSalarial.class, FolhaPonto.class, Usuario.class)
				.addClasses(ObjetoNaoEncontradoException.class, InfraestruturaException.class, AplicacaoException.class)
				.addClasses(GenericFilter.class, UsuarioFilter.class)
				.addClasses(GenericService.class, UsuarioService.class)
				.addClasses(DAOTest.class)
				.addAsWebInfResource(EmptyAsset.INSTANCE, ArchivePaths.create("beans.xml"))
				.addAsResource("test-persistence.xml", "META-INF/persistence.xml")
				.addAsWebInfResource("pcp_test-ds.xml"); 
	}
	
	@Test
	public void testRetrieve () throws Exception
	{
		Usuario u = new Usuario ();
		u = (Usuario) usuarioService.find(Usuario.class, (long) 1);
		System.out.println(u);
	}

26/12/2012 23:14:07 org.jboss.as.arquillian.container.managed.ManagedDeployableContainer startInternal
INFO: Starting container with: ["C:\Program Files\Java\jdk1.6.0_32\bin\java", -Xmx512m, -XX:MaxPermSize=128m, -ea, -Djboss.home.dir=C:\DEVELOPMENT\jboss-as-7.1.1, -Dorg.jboss.boot.log.file=C:\DEVELOPMENT\jboss-as-7.1.1/standalone/log/boot.log, -Dlogging.configuration=file:C:\DEVELOPMENT\jboss-as-7.1.1/standalone/configuration/logging.properties, -Djboss.modules.dir=C:\DEVELOPMENT\jboss-as-7.1.1\modules, -Djboss.bundles.dir=C:\DEVELOPMENT\jboss-as-7.1.1\bundles, -jar, C:\DEVELOPMENT\jboss-as-7.1.1\jboss-modules.jar, -mp, C:\DEVELOPMENT\jboss-as-7.1.1\modules, -jaxpmodule, javax.xml.jaxp-provider, org.jboss.as.standalone, -server-config, standalone.xml]
26/12/2012 23:14:07 org.xnio.Xnio <clinit>
INFO: XNIO Version 3.0.0.GA
26/12/2012 23:14:07 org.xnio.nio.NioXnio <clinit>
INFO: XNIO NIO Implementation Version 3.0.0.GA
26/12/2012 23:14:07 org.jboss.remoting3.EndpointImpl <clinit>
INFO: JBoss Remoting version 3.2.2.GA
23:14:08,523 INFO  [org.jboss.modules] JBoss Modules version 1.1.1.GA
23:14:08,708 INFO  [org.jboss.msc] JBoss MSC version 1.0.2.GA
23:14:08,759 INFO  [org.jboss.as] JBAS015899: JBoss AS 7.1.1.Final "Brontes" starting
23:14:09,857 INFO  [org.xnio] XNIO Version 3.0.3.GA
23:14:09,857 INFO  [org.jboss.as.server] JBAS015888: Creating http management service using socket-binding (management-http)
23:14:09,867 INFO  [org.xnio.nio] XNIO NIO Implementation Version 3.0.3.GA
23:14:09,874 INFO  [org.jboss.remoting] JBoss Remoting version 3.2.3.GA
23:14:09,891 INFO  [org.jboss.as.logging] JBAS011502: Removing bootstrap log handlers
23:14:09,893 INFO  [org.jboss.as.configadmin] JBAS016200: Activating ConfigAdmin Subsystem
23:14:09,903 INFO  [org.jboss.as.osgi] (ServerService Thread Pool -- 39) JBAS011940: Activating OSGi Subsystem
23:14:09,917 INFO  [org.jboss.as.webservices] (ServerService Thread Pool -- 48) JBAS015537: Activating WebServices Extension
23:14:09,919 INFO  [org.jboss.as.clustering.infinispan] (ServerService Thread Pool -- 31) JBAS010280: Activating Infinispan subsystem.
23:14:09,925 INFO  [org.jboss.as.naming] (ServerService Thread Pool -- 38) JBAS011800: Activating Naming Subsystem
23:14:09,958 INFO  [org.jboss.as.naming] (MSC service thread 1-8) JBAS011802: Starting Naming Service
23:14:09,972 INFO  [org.jboss.as.security] (ServerService Thread Pool -- 44) JBAS013101: Activating Security Subsystem
23:14:09,990 INFO  [org.jboss.as.security] (MSC service thread 1-5) JBAS013100: Current PicketBox version=4.0.7.Final
23:14:09,995 INFO  [org.jboss.as.connector] (MSC service thread 1-3) JBAS010408: Starting JCA Subsystem (JBoss IronJacamar 1.0.9.Final)
23:14:09,995 INFO  [org.jboss.as.mail.extension] (MSC service thread 1-8) JBAS015400: Bound mail session [java:jboss/mail/Default]
23:14:10,171 INFO  [org.jboss.as.connector.subsystems.datasources] (ServerService Thread Pool -- 27) JBAS010404: Deploying non-JDBC-compliant driver class com.mysql.jdbc.Driver (version 5.1)
23:14:10,191 INFO  [org.jboss.as.connector.subsystems.datasources] (ServerService Thread Pool -- 27) JBAS010403: Deploying JDBC-compliant driver class org.h2.Driver (version 1.3)
23:14:10,200 INFO  [org.apache.coyote.http11.Http11Protocol] (MSC service thread 1-6) Starting Coyote HTTP/1.1 on http--127.0.0.1-8080
23:14:10,212 INFO  [org.jboss.ws.common.management.AbstractServerConfig] (MSC service thread 1-4) JBoss Web Services - Stack CXF Server 4.0.2.GA
23:14:10,571 INFO  [org.jboss.as.remoting] (MSC service thread 1-6) JBAS017100: Listening on /127.0.0.1:4447
23:14:10,571 INFO  [org.jboss.as.server.deployment.scanner] (MSC service thread 1-8) JBAS015012: Started FileSystemDeploymentService for directory C:\DEVELOPMENT\jboss-as-7.1.1\standalone\deployments
23:14:10,573 INFO  [org.jboss.as.remoting] (MSC service thread 1-3) JBAS017100: Listening on /127.0.0.1:9999
23:14:10,623 INFO  [org.jboss.as.connector.subsystems.datasources] (MSC service thread 1-4) JBAS010400: Bound data source [java:/pcp-ds]
23:14:10,702 INFO  [org.jboss.as] (Controller Boot Thread) JBAS015951: Admin console listening on http://127.0.0.1:9990
23:14:10,705 INFO  [org.jboss.as] (Controller Boot Thread) JBAS015874: JBoss AS 7.1.1.Final "Brontes" started in 2403ms - Started 134 of 209 services (74 services are passive or on-demand)
26/12/2012 23:14:14 org.jboss.as.arquillian.protocol.jmx.ArquillianServiceDeployer doServiceDeploy
INFO: Deploy arquillian service: arquillian-service: 775 assets
23:14:15,410 INFO  [org.jboss.as.repository] (management-handler-thread - 2) JBAS014900: Content added at location C:\DEVELOPMENT\jboss-as-7.1.1\standalone\data\content\b5\a3325bd7f8ad3249f1730e5f5da1a1bfa4ac21\content
23:14:15,428 INFO  [org.jboss.as.server.deployment] (MSC service thread 1-7) JBAS015876: Starting deployment of "arquillian-service"
23:14:15,657 WARN  [org.jboss.as.dependency.private] (MSC service thread 1-2) JBAS018567: Deployment "deployment.arquillian-service" is using a private module ("org.jboss.as.jmx:main") which may be changed or removed in future versions without notice.
23:14:15,663 WARN  [org.jboss.as.dependency.private] (MSC service thread 1-2) JBAS018567: Deployment "deployment.arquillian-service" is using a private module ("org.jboss.as.server:main") which may be changed or removed in future versions without notice.
23:14:15,669 WARN  [org.jboss.as.dependency.private] (MSC service thread 1-2) JBAS018567: Deployment "deployment.arquillian-service" is using a private module ("org.jboss.as.osgi:main") which may be changed or removed in future versions without notice.
23:14:15,674 WARN  [org.jboss.as.dependency.private] (MSC service thread 1-2) JBAS018567: Deployment "deployment.arquillian-service" is using a private module ("org.jboss.jandex:main") which may be changed or removed in future versions without notice.
23:14:15,679 WARN  [org.jboss.as.dependency.private] (MSC service thread 1-2) JBAS018567: Deployment "deployment.arquillian-service" is using a private module ("org.jboss.osgi.framework:main") which may be changed or removed in future versions without notice.
23:14:15,848 INFO  [org.jboss.as.server] (management-handler-thread - 2) JBAS018559: Deployed "arquillian-service"
23:14:16,228 INFO  [org.jboss.as.repository] (management-handler-thread - 3) JBAS014900: Content added at location C:\DEVELOPMENT\jboss-as-7.1.1\standalone\data\content\fe\37463333130e68479f8c0ca07aebc170be4eb2\content
23:14:16,238 INFO  [org.jboss.as.server.deployment] (MSC service thread 1-4) JBAS015876: Starting deployment of "testUsuario.war"
23:14:16,501 INFO  [org.jboss.as.jpa] (MSC service thread 1-2) JBAS011401: Read persistence.xml for pcp_test_PU
23:14:16,583 INFO  [org.jboss.weld.deployer] (MSC service thread 1-1) JBAS016002: Processing weld deployment testUsuario.war
23:14:16,595 INFO  [org.jboss.as.ejb3.deployment.processors.EjbJndiBindingsDeploymentUnitProcessor] (MSC service thread 1-1) JNDI bindings for session bean named GenericService in deployment unit deployment "testUsuario.war" are as follows:

	java:global/testUsuario/GenericService!br.com.snclavalinmarte.pcp.cliente.services.GenericService
	java:app/testUsuario/GenericService!br.com.snclavalinmarte.pcp.cliente.services.GenericService
	java:module/GenericService!br.com.snclavalinmarte.pcp.cliente.services.GenericService
	java:global/testUsuario/GenericService
	java:app/testUsuario/GenericService
	java:module/GenericService

23:14:16,609 INFO  [org.jboss.as.ejb3.deployment.processors.EjbJndiBindingsDeploymentUnitProcessor] (MSC service thread 1-1) JNDI bindings for session bean named DAOTest in deployment unit deployment "testUsuario.war" are as follows:

	java:global/testUsuario/DAOTest!br.com.snclavalinmarte.pcp.common.dao.DAOTest
	java:app/testUsuario/DAOTest!br.com.snclavalinmarte.pcp.common.dao.DAOTest
	java:module/DAOTest!br.com.snclavalinmarte.pcp.common.dao.DAOTest
	java:global/testUsuario/DAOTest
	java:app/testUsuario/DAOTest
	java:module/DAOTest

23:14:16,751 INFO  [org.jboss.weld.deployer] (MSC service thread 1-1) JBAS016005: Starting Services for CDI deployment: testUsuario.war
23:14:16,812 INFO  [org.jboss.weld.Version] (MSC service thread 1-1) WELD-000900 1.1.5 (AS71)
23:14:16,851 INFO  [org.jboss.as.arquillian] (MSC service thread 1-8) Arquillian deployment detected: ArquillianConfig[service=jboss.arquillian.config."testUsuario.war",unit=testUsuario.war,tests=[br.com.snclavalinmarte.pcp.client.services.TestUsuarioService]]
23:14:16,860 INFO  [org.jboss.as.connector.subsystems.datasources] (MSC service thread 1-1) JBAS010400: Bound data source [pcp_teste-ds]
23:14:16,871 INFO  [org.jboss.as.jpa] (MSC service thread 1-5) JBAS011402: Starting Persistence Unit Service 'testUsuario.war#pcp_test_PU'
23:14:16,982 INFO  [org.hibernate.annotations.common.Version] (MSC service thread 1-5) HCANN000001: Hibernate Commons Annotations {4.0.1.Final}
23:14:16,992 INFO  [org.hibernate.Version] (MSC service thread 1-5) HHH000412: Hibernate Core {4.0.1.Final}
23:14:16,996 INFO  [org.hibernate.cfg.Environment] (MSC service thread 1-5) HHH000206: hibernate.properties not found
23:14:17,001 INFO  [org.hibernate.cfg.Environment] (MSC service thread 1-5) HHH000021: Bytecode provider name : javassist
23:14:17,022 INFO  [org.hibernate.ejb.Ejb3Configuration] (MSC service thread 1-5) HHH000204: Processing PersistenceUnitInfo [
	name: pcp_test_PU
	...]
23:14:17,230 INFO  [org.hibernate.service.jdbc.connections.internal.ConnectionProviderInitiator] (MSC service thread 1-5) HHH000130: Instantiating explicit connection provider: org.hibernate.ejb.connection.InjectedDataSourceConnectionProvider
23:14:17,269 INFO  [org.hibernate.dialect.Dialect] (MSC service thread 1-5) HHH000400: Using dialect: org.hibernate.dialect.MySQLInnoDBDialect
23:14:17,289 INFO  [org.hibernate.engine.transaction.internal.TransactionFactoryInitiator] (MSC service thread 1-5) HHH000268: Transaction strategy: org.hibernate.engine.transaction.internal.jta.CMTTransactionFactory
23:14:17,299 INFO  [org.hibernate.hql.internal.ast.ASTQueryTranslatorFactory] (MSC service thread 1-5) HHH000397: Using ASTQueryTranslatorFactory
23:14:17,340 INFO  [org.hibernate.validator.util.Version] (MSC service thread 1-5) Hibernate Validator 4.2.0.Final
23:14:17,661 INFO  [org.jboss.weld.deployer] (MSC service thread 1-1) JBAS016008: Starting weld service for deployment testUsuario.war
23:14:18,026 INFO  [org.jboss.web] (MSC service thread 1-5) JBAS018210: Registering web context: /testUsuario
23:14:18,066 INFO  [org.jboss.as.server] (management-handler-thread - 3) JBAS018559: Deployed "testUsuario.war"
23:14:18,369 INFO  [stdout] (pool-5-thread-1) Hibernate: select usuario0_.id as id2_0_, usuario0_.ativo as ativo2_0_, usuario0_.id_classificacaoProfissional as id7_2_0_, usuario0_.id_controleAcesso as id8_2_0_, usuario0_.dataAdmissao as dataAdmi3_2_0_, usuario0_.id_disciplina as id9_2_0_, usuario0_.email as email2_0_, usuario0_.id_faixaSalarial as id10_2_0_, usuario0_.matricula as matricula2_0_, usuario0_.nome as nome2_0_ from usuario usuario0_ where usuario0_.id=?

23:14:18,513 INFO  [stdout] (pool-5-thread-1) Hibernate: select faixasalar0_.id as id5_0_, faixasalar0_.ativo as ativo5_0_, faixasalar0_.descricao as descricao5_0_, faixasalar0_.maximo as maximo5_0_, faixasalar0_.media as media5_0_, faixasalar0_.minimo as minimo5_0_ from faixa_salarial faixasalar0_ where faixasalar0_.id=?

23:14:18,594 INFO  [stdout] (pool-5-thread-1) Hibernate: select classifica0_.id as id7_0_, classifica0_.ativo as ativo7_0_, classifica0_.descricao as descricao7_0_ from classificacao_profissional classifica0_ where classifica0_.id=?

23:14:18,698 INFO  [stdout] (pool-5-thread-1) Hibernate: select disciplina0_.id as id6_1_, disciplina0_.id_area as id4_6_1_, disciplina0_.ativo as ativo6_1_, disciplina0_.descricao as descricao6_1_, area1_.id as id1_0_, area1_.ativo as ativo1_0_, area1_.descricao as descricao1_0_, area1_.sigla as sigla1_0_ from disciplina disciplina0_ left outer join area area1_ on disciplina0_.id_area=area1_.id where disciplina0_.id=?

23:14:18,800 INFO  [stdout] (pool-5-thread-1) Hibernate: select controleac0_.id as id8_0_, controleac0_.descricao as descricao8_0_ from controle_acesso controleac0_ where controleac0_.id=?

23:14:18,834 INFO  [stdout] (pool-5-thread-1) 
23:14:18,835 INFO  [stdout] (pool-5-thread-1) Ativo: true
23:14:18,836 INFO  [stdout] (pool-5-thread-1) Matrícula: 119
23:14:18,838 INFO  [stdout] (pool-5-thread-1) Nome: Marcelo Magalhães
23:14:18,839 INFO  [stdout] (pool-5-thread-1) E-mail: [email removido]
23:14:18,841 INFO  [stdout] (pool-5-thread-1) Data de admissão: java.util.GregorianCalendar[time=1259632800000,areFieldsSet=true,areAllFieldsSet=true,lenient=true,zone=sun.util.calendar.ZoneInfo[id="America/Sao_Paulo",offset=-10800000,dstSavings=3600000,useDaylight=true,transitions=129,lastRule=java.util.SimpleTimeZone[id=America/Sao_Paulo,offset=-10800000,dstSavings=3600000,useDaylight=true,startYear=0,startMode=3,startMonth=9,startDay=15,startDayOfWeek=1,startTime=0,startTimeMode=0,endMode=3,endMonth=1,endDay=15,endDayOfWeek=1,endTime=0,endTimeMode=0]],firstDayOfWeek=2,minimalDaysInFirstWeek=1,ERA=1,YEAR=2009,MONTH=11,WEEK_OF_YEAR=49,WEEK_OF_MONTH=1,DAY_OF_MONTH=1,DAY_OF_YEAR=335,DAY_OF_WEEK=3,DAY_OF_WEEK_IN_MONTH=1,AM_PM=0,HOUR=0,HOUR_OF_DAY=0,MINUTE=0,SECOND=0,MILLISECOND=0,ZONE_OFFSET=-10800000,DST_OFFSET=3600000]
23:14:18,856 INFO  [stdout] (pool-5-thread-1) Ativo: true
23:14:18,857 INFO  [stdout] (pool-5-thread-1) Descrição: Faixa salarial A
23:14:18,859 INFO  [stdout] (pool-5-thread-1) Mínimo: 17073.2
23:14:18,860 INFO  [stdout] (pool-5-thread-1) Média: 20599.7
23:14:18,861 INFO  [stdout] (pool-5-thread-1) Máximo: 100000
23:14:18,862 INFO  [stdout] (pool-5-thread-1) Ativo: true
23:14:18,864 INFO  [stdout] (pool-5-thread-1) Descrição: Engenheiro
23:14:18,865 INFO  [stdout] (pool-5-thread-1) Ativo: true
23:14:18,866 INFO  [stdout] (pool-5-thread-1) Descrição: Financeiro
23:14:18,867 INFO  [stdout] (pool-5-thread-1) Descrição: ADMIN

23:14:18,936 INFO  [org.jboss.weld.deployer] (MSC service thread 1-7) JBAS016009: Stopping weld service for deployment testUsuario.war
23:14:18,943 INFO  [org.jboss.as.jpa] (MSC service thread 1-7) JBAS011403: Stopping Persistence Unit Service 'testUsuario.war#pcp_test_PU'
23:14:18,952 INFO  [org.jboss.as.connector.subsystems.datasources] (MSC service thread 1-6) JBAS010409: Unbound data source [pcp_teste-ds]
23:14:19,000 INFO  [org.jboss.as.server.deployment] (MSC service thread 1-6) JBAS015877: Stopped deployment testUsuario.war in 86ms
23:14:19,042 INFO  [org.jboss.as.repository] (management-handler-thread - 1) JBAS014901: Content removed from location C:\DEVELOPMENT\jboss-as-7.1.1\standalone\data\content\fe\37463333130e68479f8c0ca07aebc170be4eb2\content
23:14:19,047 INFO  [org.jboss.as.server] (management-handler-thread - 1) JBAS018558: Undeployed "testUsuario.war"
26/12/2012 23:14:19 org.jboss.as.arquillian.protocol.jmx.ArquillianServiceDeployer undeploy
INFO: Undeploy arquillian service: arquillian-service: 775 assets
23:14:19,069 INFO  [org.jboss.as.server.deployment] (MSC service thread 1-7) JBAS015877: Stopped deployment arquillian-service in 7ms
23:14:19,104 INFO  [org.jboss.as.repository] (management-handler-thread - 2) JBAS014901: Content removed from location C:\DEVELOPMENT\jboss-as-7.1.1\standalone\data\content\b5\a3325bd7f8ad3249f1730e5f5da1a1bfa4ac21\content
23:14:19,110 INFO  [org.jboss.as.server] (management-handler-thread - 2) JBAS018558: Undeployed "arquillian-service"
26/12/2012 23:14:19 org.jboss.remoting3.remote.RemoteConnection handleException
ERROR: JBREM000200: Remote connection failed: java.io.IOException: Foi forçado o cancelamento de uma conexão existente pelo host remoto
26/12/2012 23:14:19 org.jboss.remoting3.remote.RemoteConnection handleException
ERROR: JBREM000200: Remote connection failed: java.io.IOException: Foi forçado o cancelamento de uma conexão existente pelo host remoto