Hi,

I use Jboss 4.0.5 and Hibernate with JPA and I have this exception when I want to commit the transaction after a persist call of a POJO in a stateless session bean:

Exception: java.lang.IllegalStateException: JTA EntityManager cannot access a transactions

EntityTransaction tx = em.getTransaction();
tx.begin();
em.persist(actor);
tx.commit();
em.close();

Thanks for your help.

11:21:43,052 ERROR [STDERR] java.lang.IllegalStateException: JTA EntityManager cannot access a transactions
11:21:43,052 ERROR [STDERR] at org.hibernate.ejb.AbstractEntityManagerImpl.getTransaction(AbstractEntityManagerImpl.java:316)

Ejb-jar.xml:
<session-type>Stateless</session-type>
<transaction-type>Container</transaction-type>
</session>
</enterprise-beans>
<assembly-descriptor>
<container-transaction>
<method>
<ejb-name>CatalogManagerBean</ejb-name>
<method-name>*</method-name>
</method>
<trans-attribute>Supports</trans-attribute>
</container-transaction>
</assembly-descriptor>


Persistence.xml
<properties>
<property name="hibernate.archive.autodetection"
value="class, hbm" />
<property name="hibernate.show_sql" value="true" />
<property name="hibernate.format_sql" value="true" />
<property name="hibernate.dialect"
value="org.hibernate.dialect.MySQLDialect" />
<property name="hibernate.connection.driver_class"
value="com.mysql.jdbc.Driver" />
<property name="hibernate.connection.url"
value="jdbc:mysql://localhost:3306/dvdstore" />
<property name="hibernate.connection.username" value="root" />
<property name="hibernate.connection.password"
value="system" />
<property name="hibernate.transaction.factory_class"
value="org.hibernate.ejb.transaction.JoinableCMTTransactionFactory" />
<property name="hibernate.transaction.manager_lookup_class"
value="org.hibernate.transaction.JBossTransactionManagerLookup" />
</properties>

Full Exception Trace:

11:21:39,717 INFO [Version] Hibernate EntityManager 3.2.0.GA
11:21:39,747 INFO [Version] Hibernate Annotations 3.2.0.GA
11:21:39,767 INFO [Environment] Hibernate 3.2.0.ga
11:21:39,777 INFO [Environment] hibernate.properties not found
11:21:39,777 INFO [Environment] Bytecode provider name : cglib
11:21:39,787 INFO [Environment] using JDK 1.4 java.sql.Timestamp handling
11:21:40,087 WARN [Ejb3Configuration] Overriding hibernate.transaction.factory_class is dangerous, this might break the EJB3 specification implementation
11:21:41,139 INFO [DriverManagerConnectionProvider] Using Hibernate built-in connection pool (not for production use!)
11:21:41,139 INFO [DriverManagerConnectionProvider] Hibernate connection pool size: 20
11:21:41,139 INFO [DriverManagerConnectionProvider] autocommit mode: true
11:21:41,139 INFO [DriverManagerConnectionProvider] using driver: com.mysql.jdbc.Driver at URL: jdbc:mysql://localhost:3306/dvdstore
11:21:41,139 INFO [DriverManagerConnectionProvider] connection properties: {user=root, password=system, autocommit=true, release_mode=auto}
11:21:42,020 INFO [SettingsFactory] RDBMS: MySQL, version: 4.1.21-community-nt
11:21:42,020 INFO [SettingsFactory] JDBC driver: MySQL-AB JDBC Driver, version: mysql-connector-java-5.0.4 ( $Date: 2006-10-19 17:47:48 +0200 (Thu, 19 Oct 2006) $, $Revision: 5908 $ )
11:21:42,060 INFO [Dialect] Using dialect: org.hibernate.dialect.MySQLDialect
11:21:42,070 INFO [TransactionFactoryFactory] Transaction strategy: org.hibernate.ejb.transaction.JoinableCMTTransactionFactory
11:21:42,080 INFO [TransactionManagerLookupFactory] instantiating TransactionManagerLookup: org.hibernate.transaction.JBossTransactionManagerLookup
11:21:42,080 INFO [TransactionManagerLookupFactory] instantiated TransactionManagerLookup
11:21:42,080 INFO [SettingsFactory] Automatic flush during beforeCompletion(): disabled
11:21:42,080 INFO [SettingsFactory] Automatic session close at end of transaction: disabled
11:21:42,080 INFO [SettingsFactory] JDBC batch size: 15
11:21:42,080 INFO [SettingsFactory] JDBC batch updates for versioned data: disabled
11:21:42,090 INFO [SettingsFactory] Scrollable result sets: enabled
11:21:42,090 INFO [SettingsFactory] JDBC3 getGeneratedKeys(): enabled
11:21:42,090 INFO [SettingsFactory] Connection release mode: auto
11:21:42,090 INFO [SettingsFactory] Maximum outer join fetch depth: 2
11:21:42,090 INFO [SettingsFactory] Default batch fetch size: 1
11:21:42,090 INFO [SettingsFactory] Generate SQL with comments: disabled
11:21:42,090 INFO [SettingsFactory] Order SQL updates by primary key: disabled
11:21:42,090 INFO [SettingsFactory] Query translator: org.hibernate.hql.ast.ASTQueryTranslatorFactory
11:21:42,100 INFO [ASTQueryTranslatorFactory] Using ASTQueryTranslatorFactory
11:21:42,100 INFO [SettingsFactory] Query language substitutions: {}
11:21:42,100 INFO [SettingsFactory] JPA-QL strict compliance: enabled
11:21:42,100 INFO [SettingsFactory] Second-level cache: enabled
11:21:42,100 INFO [SettingsFactory] Query cache: disabled
11:21:42,100 INFO [SettingsFactory] Cache provider: org.hibernate.cache.NoCacheProvider
11:21:42,100 INFO [SettingsFactory] Optimize cache for minimal puts: disabled
11:21:42,100 INFO [SettingsFactory] Structured second-level cache entries: disabled
11:21:42,110 INFO [SettingsFactory] Echoing all SQL to stdout
11:21:42,110 INFO [SettingsFactory] Statistics: disabled
11:21:42,110 INFO [SettingsFactory] Deleted entity synthetic identifier rollback: disabled
11:21:42,110 INFO [SettingsFactory] Default entity-mode: pojo
11:21:42,180 INFO [SessionFactoryImpl] building session factory
11:21:42,931 INFO [SessionFactoryObjectFactory] Not binding factory to JNDI, no JNDI name configured
11:21:42,941 INFO [NamingHelper] JNDI InitialContext properties:{}
11:21:43,052 ERROR [STDERR] java.lang.IllegalStateException: JTA EntityManager cannot access a transactions
11:21:43,052 ERROR [STDERR] at org.hibernate.ejb.AbstractEntityManagerImpl.getTransaction(AbstractEntityManagerImpl.java:316)

I suspect you use he EM in JTA transaction-type, hence you cannot use the getTransaction() API, but you don't show enough of your persistence.xml

This is my persistence.xml file:

<persistence 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/ ... ce_1_0.xsd"
version="1.0">
<persistence-unit name="dvdstorePU" transaction-type="JTA">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<properties>
<property name="hibernate.archive.autodetection"
value="class, hbm" />
<property name="hibernate.show_sql" value="true" />
<property name="hibernate.format_sql" value="true" />
<property name="hibernate.dialect"
value="org.hibernate.dialect.MySQLDialect" />
<property name="hibernate.connection.driver_class"
value="com.mysql.jdbc.Driver" />
<property name="hibernate.connection.url"
value="jdbc:mysql://localhost:3306/dvdstore" />
<property name="hibernate.connection.username" value="root" />
<property name="hibernate.connection.password"
value="system" />
<property name="hibernate.transaction.manager_lookup_class"
value="org.hibernate.transaction.JBossTransactionManagerLookup" />
</properties>
</persistence-unit>
</persistence>

I've changed the ejb-jar.xml: I use Bean because I use BMT inside the ejb session code.
<session-type>Stateless</session-type>
<transaction-type>Bean</transaction-type>
</session>
</enterprise-beans>

In the ejb session bean:
Actor actor = new Actor();
actor.setFirstname(firstname);
actor.setName(name);

EntityManagerFactory emf = Persistence.createEntityManagerFactory("dvdstorePU");

EntityManager em = emf.createEntityManager();
UserTransaction tx = (UserTransaction) new InitialContext().lookup("UserTransaction");
tx.begin();
em.persist(actor);
tx.commit();
em.close();

Thanks for any help which could solve my problem: my POJO class is not stored in the database, and I have no exception.

Look the spec or Hibernate EM ref doc for em.joinTransaction()

BTW I don't understand people using BMT :-)

Thanks very much for your answer, it works perfectly with the joinTransaction method.

EntityManagerFactory emf = Persistence.createEntityManagerFactory("dvdstorePU");
EntityManager em = emf.createEntityManager();
tx = (UserTransaction) new InitialContext().lookup("UserTransaction");
tx.begin();
em.joinTransaction();
em.persist(actor);
tx.commit();
em.close();