Hibernate version:
JBoss [Zion] 4.0.4.GA (build: CVSTag=JBoss_4_0_4_GA date=200605151000)
09:44:58,001 INFO [Version] Hibernate EntityManager 3.2.0.CR1
09:44:58,266 INFO [Version] Hibernate Annotations 3.2.0.CR1
09:44:58,298 INFO [Environment] Hibernate 3.2 cr2

Name and version of the database you are using:
SQL Server 2005

I'm trying to have a Transaction Serialization with jboss 4.0.4.GA but with the default configurations seems to fail.

i read that by default a stateless EJB3 bean is configured with

@TransactionAttribute(TransactionAttributeType.REQUIRED)

Maybe i don't understand very well the boundaries of this transaction... i'd like to have serialization... when a thread start executing a method no other thread can enter the same method since in this method first i read some resources, then i allocate

i read http://java.sun.com/javaee/5/docs/tutor ... tion3.html and seems to me that the default TransactionAttribute should be fine but i practice i get that 2 transaction interfering each other :(

thanks to all!!!!

This has nothing to do with isolation level you are writing about / want.

Set isolation on db connection or write your own synch code.

the semantic i'd like to achieve is that if a transaction is on the run a second transaction is queued.... or at least to explain a lock management

how can i got an exclusive lock on objects i'm going to read from db?

I try to add this tag to my datasource configuration

<transaction-isolation>TRANSACTION_SERIALIZABLE</transaction-isolation>


in fact i see differencies.... 2 transaction can run simultaneously but only one (the first started i suppose) can commit successfully... the other got an exception....

Full stack trace of any exception that occurs:
12:09:44,278 WARN [JDBCExceptionReporter] SQL Error: 1205, SQLState: 40001
12:09:44,278 ERROR [JDBCExceptionReporter] Transaction (Process ID 59) was deadlocked on lock resources with another process and has been chosen as the deadlock victim. Rerun the transaction.
12:09:44,278 ERROR [AbstractFlushingEventListener] Could not synchronize database state with session
org.hibernate.exception.LockAcquisitionException: could not update: [com.kirio.S3.ejb3.entity.FilePerOrdinePostoPerDataEvento#20]

i have to sync in a clustered jboss enviroment.... how to do it???

i'm also thinking about message bean... i don't know if it's applicable...

pls I'M LOST!!!!!