Diego Rivera [http://community.jboss.org/people/diego_rivera] created the 
discussion

"javax.ejb.EJBException: javax.persistence.TransactionRequiredException"

To view the discussion, visit: http://community.jboss.org/message/583343#583343

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Hello, everyone!

I'm migrating an application from Glassfish 3.0.1 to JBoss 6.0.0 Final.  To 
expedite the migration and avoid a rather hefty persistence layer refactor I'm 
using EclipseLink 2.1.2 as the JPA provider.  Needless to say the application 
works fine in Glassfish.  Anyway...

The application uses EJB 3.1 in a WAR (Servlet 3.0, JSF 2.0), and JPA 2.0 
persistence. I have already defined the DataSources needed (included below).

I've almost got it running in JBoss 6.  But I have a very strange issue 
regarding transactions not being properly enlisted by the persistence manager 
(or, at least, that's what it seems).  I keep getting javax.ejb.EJBException: 
javax.persistence.TransactionRequiredException

Here's the (pseudo) code description-stack-thing:

Initializer.contextInitialized() -> EJB1.init() <Transaction.REQUIRED> -> 
EJB2.init() <Transaction.REQUIRES_NEW> -> EntityManager.createNamedQuery()

I've confirmed that the code invocation does get as far as the 
createNamedQuery() call because of trace logging I put in place.  The problem 
seems to be that EclipseLink is complaining that it can't find a transaction 
which should obviously be there.

I've added the "eclipselink.transaction.join-existing" configuration to 
EclipseLink, and produced no change.  I've also turned up the logging in EL in 
an attempt to determine where the problem is.  Eclipselink is finding the 
correct data source (I can see that from its logs) - it's joining the 
transaction it seems to be having trouble with.

This is the datasource declaration in question:
> <?xml version="1.0" encoding="UTF-8" standalone="yes"?>
> <datasources>
>         <local-tx-datasource>
>                 <jndi-name>MyDS</jndi-name>
>                 
> <connection-url>jdbc:postgresql://localhost:5432/mydb</connection-url>
>                 <driver-class>org.postgresql.Driver</driver-class>
>                 <user-name>mydb</user-name>
>                 <password>mydb</password>
>                 <check-valid-connection-sql>select 
> 1</check-valid-connection-sql>
>                 <metadata>
>                         <type-mapping>PostgreSQL 8.0</type-mapping>
>                 </metadata>
> 
>                 <min-pool-size>8</min-pool-size>
>                 <max-pool-size>32</max-pool-size>
>                 <idle-timeout-minutes>30</idle-timeout-minutes>
>                 <prefill>true</prefill>
>         </local-tx-datasource>
> </datasources>
The JDBC driver jar is in the right place, the datasource is shown as active in 
the admin console, etc.

I've not tested using an XA datasource because I'd just as soon avoid the 
overhead if I can (since I don't need it).  This is my persistence.xml:
> <?xml version="1.0" encoding="UTF-8"?>
> <persistence xmlns:xsi=" http://www.w3.org/2001/XMLSchema-instance 
> http://www.w3.org/2001/XMLSchema-instance"; version="2.0"
>           xmlns=" http://java.sun.com/xml/ns/persistence 
> http://java.sun.com/xml/ns/persistence"; xmlns:jpa=" 
> http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd 
> http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd";
>           xsi:schemaLocation=" http://java.sun.com/xml/ns/persistence 
> http://java.sun.com/xml/ns/persistence  
> http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd 
> http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd";>
>           <persistence-unit name="Persistence Core">
>                     
> <provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
>                     <jta-data-source>java:/MyDS</jta-data-source>
>                     <shared-cache-mode>NONE</shared-cache-mode>
>                     <properties>
>                <property name="eclipselink.logging.level" value="ALL"/> 
>                               <property name="eclipselink.target-database" 
> value="PostgreSQL"/>
>                               <property 
> name="eclipselink.weaving.changetracking" value="false"/>
>                <!-- BEGIN PROPERTIES NEEDED FOR JBOSS COMPATIBILITY -->
>                <property name="eclipselink.transaction.join-existing" 
> value="true"/>
>             </properties>
>           </persistence-unit>
> </persistence>

Maybe I'm missing something in jboss-web.xml? This is the one I'm using...

> <?xml version="1.0" encoding="UTF-8"?>  
> <!DOCTYPE jboss-web PUBLIC "-//JBoss//DTD Web Application 3.0//EN" " 
> http://www.jboss.org/j2ee/dtd/jboss-web_5_0.dtd 
> http://www.jboss.org/j2ee/dtd/jboss-web_5_0.dtd";>
> <jboss-web>
>           <context-root>/</context-root>
> </jboss-web>

As you can see, no funkyness there... maybe that's the problem?

The other problem I was having was that originally I was using a @Startup 
@Singleton bean with a @PostConstruct method, and was getting exceptions 
regarding @PostConstruct being called on a newly created bean. Thus, I switched 
to the WebListener-based startup model that I'm currently using (which should 
work just the same anyway).

Thanks!
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