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Hi,

I'm trying to configure Hibernate to use Atomikos as the transaction manager. The documentation states so set the Hibernate parameters:

transaction.manager_lookup_class=com.atomikos.icatch.jta.hibernate3.TransactionManagerLookup
transaction.factory_class=com.atomikos.icatch.jta.hibernate3.AtomikosJTATransactionFactory

But when I run my application, the log contains lots of warnings like:
Cannot join transaction: do not override hibernate.transaction.factory_class

I searched this forum and found a couple of topics like
http://fogbugz.atomikos.com/default.asp?community.6.1085.2#discussTopic1086
but none of them have a solution. To get rid of these warnings, I changed "transaction.factory_class" to "org.hibernate.ejb.transaction.JoinableCMTTransactionFactory".

I'm not sure if this is the right solution. If it was, what's the purpose of Atomikos' transaction factory anyway?

It is a bit frustrating because this ia the very basic configuration of JPA/Hibernate and I cannot get it to run smoothly.

Versions:
- Atomikos Transactions Essentials 3.6.4
- Hibernate 3.5.0-Final (tried 3.3.2 before - same result)
- Spring 3.0.2
- JDK 1.6.0_19

Thanks in advance!
Stephan

Hi,

Yes, recent versions of Hibernate have some extra JNDI dependencies (JBoss is an appserver vendor, not sure if that is the reason;-) We are working on that.

Spring's LocalSessionFactory also has a setJtaTransactionManager injector method. Might be an alternative for the time being?

HTH

Hi,

thanks for your fast response! Unfortunately, I cannot use the setJtaTransactionManager method because I use JPA and Spring's LocalContainerEntityManagerFactoryBean that does not have this method.

Until a new version of Atomikos is released, is it ok to use the JoinableCMTTransactionFactory?

Cheers,
Stephan

Hi,

Hard to say.

If this is for production use, I strongly recommend our 'developer access' support formula to have us assist you one-on-one and make sure things work like you expect them to.

Best
Guy

I am using Spring 3.0.2 + Hibernate 3.5.0-Final in JPA Mode.
All i had to set is transaction.manager_lookup_class, the Factory does not need to be specified - it should work without (i did not face any problem yet let hibernate use its own default jta factory here - must not be "true" in any case, but give it a try).

Not sure if I agree here - according to the Hibernate sources, the default Hibernate transaction factory will not work properly. At least: I don't see how it can use Atomikos because it cannot find our JTA objects. So I would suspect that you're not really using JTA for the Hibernate JDBC access...

I did not specify any factory - but looking at hibernate debug output it show this:

2010-04-15 14:46:40,736 [main]          INFO  org.hibernate.transaction.TransactionFactoryFactory - Transaction strategy: org.hibernate.ejb.transaction.JoinableCMTTransactionFactory
2010-04-15 14:46:40,738 [main]          INFO  org.hibernate.transaction.TransactionManagerLookupFactory - instantiating TransactionManagerLookup: com.atomikos.icatch.jta.hibernate3.TransactionManagerLookup
2010-04-15 14:46:40,740 [main]          INFO  org.hibernate.transaction.TransactionManagerLookupFactory - instantiated TransactionManagerLookup

So it uses the JoinableCMTTransactionFactory by default - which seems to work - shouldn't it?

2010-04-15 14:46:42,520 [main]          DEBUG org.hibernate.ejb.AbstractEntityManagerImpl - Looking for a JTA transaction to join
2010-04-15 14:46:42,531 [main]          DEBUG org.hibernate.jdbc.JDBCContext - successfully registered Synchronization

So its actually using the JTA Transaction already there.

@Torsten:

I don't really see the JTA transaction itself in your log excerpt - so I am still not sure.

Some more about inserting one JPA Entity:

2010-04-15 16:07:34,926 [main]          INFO  org.springframework.transaction.jta.JtaTransactionManager - Using JTA UserTransaction: com.atomikos.icatch.jta.J2eeUserTransaction@2fa847df
2010-04-15 16:07:34,926 [main]          INFO  org.springframework.transaction.jta.JtaTransactionManager - Using JTA TransactionManager: com.atomikos.icatch.jta.UserTransactionManager@510699ea
2010-04-15 16:07:35,244 [Thread-3]      INFO  atomikos - MessageConsumerSession: Starting JMS listener thread.
2010-04-15 16:07:35,263 [Thread-3]      INFO  atomikos - AtomikosConnectionFactoryBean 'jmsFactory1': createConnection()...
2010-04-15 16:07:35,263 [Thread-3]      INFO  atomikos - AtomikosConnectionFactoryBean 'jmsFactory1': init...
2010-04-15 16:07:35,263 [Thread-3]      INFO  atomikos - AtomikosConnectionFactoryBean 'jmsFactory1': getReference()...
2010-04-15 16:07:35,265 [Thread-3]      INFO  atomikos - AtomikosConnectionFactoryBean 'jmsFactory1': initializing with [ xaConnectionFactory=org.apache.activemq.ActiveMQXAConnectionFactory@2569a1c5, xaConnectionFactoryClassName=null, uniqueResourceName=jmsFactory1, maxPoolSize=10, minPoolSize=1, borrowConnectionTimeout=30, maxIdleTime=60, reapTimeout=0, maintenanceInterval=60, xaProperties=[], localTransactionMode=false]
2010-04-15 16:07:35,280 [main]          INFO  atomikos - createCompositeTransaction ( 900000 ): created new ROOT transaction with id com.atomikos.spring.jdbc.tm-dev0000100069
2010-04-15 16:07:35,321 [main]          DEBUG org.hibernate.impl.SessionImpl - opened session at timestamp: 12713404552
2010-04-15 16:07:35,321 [main]          DEBUG org.hibernate.ejb.AbstractEntityManagerImpl - Looking for a JTA transaction to join
2010-04-15 16:07:35,325 [main]          DEBUG org.hibernate.jdbc.JDBCContext - successfully registered Synchronization
2010-04-15 16:07:35,343 [main]          DEBUG org.hibernate.event.def.AbstractSaveEventListener - executing identity-insert immediately
2010-04-15 16:07:35,344 [main]          DEBUG org.hibernate.jdbc.AbstractBatcher - about to open PreparedStatement (open PreparedStatements: 0, globally: 0)
2010-04-15 16:07:35,344 [main]          DEBUG org.hibernate.jdbc.ConnectionManager - opening JDBC connection
2010-04-15 16:07:35,344 [main]          DEBUG org.hibernate.SQL - insert into TestEntity (id, text, value) values (null, ?, ?)
2010-04-15 16:07:35,346 [main]          INFO  atomikos - AtomikosDataSoureBean 'h2jdbc': getConnection ( null )...
2010-04-15 16:07:35,346 [main]          INFO  atomikos - AtomikosDataSoureBean 'h2jdbc': init...
2010-04-15 16:07:35,346 [main]          INFO  atomikos - atomikos connection proxy for conn1: url=jdbc:h2:mem:h2TestDB user=H2TESTDB: calling toString...
2010-04-15 16:07:35,346 [main]          INFO  atomikos - atomikos connection proxy for conn1: url=jdbc:h2:mem:h2TestDB user=H2TESTDB: calling toString...
2010-04-15 16:07:35,346 [main]          INFO  atomikos - atomikos connection proxy for conn1: url=jdbc:h2:mem:h2TestDB user=H2TESTDB: calling getAutoCommit...
2010-04-15 16:07:35,351 [main]          INFO  atomikos - addParticipant ( XAResourceTransaction: 636F6D2E61746F6D696B6F732E737072696E672E6A6462632E746D2D64657630303030313030303639:636F6D2E61746F6D696B6F732E737072696E672E6A6462632E746D2D64657631 ) for transaction com.atomikos.spring.jdbc.tm-dev0000100069
2010-04-15 16:07:35,351 [main]          INFO  atomikos - XAResource.start ( 636F6D2E61746F6D696B6F732E737072696E672E6A6462632E746D2D64657630303030313030303639:636F6D2E61746F6D696B6F732E737072696E672E6A6462632E746D2D64657631 , XAResource.TMNOFLAGS ) on resource h2jdbc represented by XAResource instance xads0: url=jdbc:h2:mem:h2TestDB;DB_CLOSE_ON_EXIT=FALSE;DB_CLOSE_DELAY=-1;IGNORECASE=TRUE user=h2TestDB
2010-04-15 16:07:35,352 [main]          INFO  atomikos - atomikos connection proxy for conn1: url=jdbc:h2:mem:h2TestDB user=H2TESTDB: calling prepareStatement...
2010-04-15 16:07:35,354 [main]          DEBUG org.hibernate.id.IdentifierGeneratorHelper - Natively generated identity: 1
2010-04-15 16:07:35,355 [main]          DEBUG org.hibernate.jdbc.AbstractBatcher - about to close PreparedStatement (open PreparedStatements: 1, globally: 1)
2010-04-15 16:07:35,355 [main]          DEBUG org.hibernate.jdbc.ConnectionManager - aggressively releasing JDBC connection
2010-04-15 16:07:35,355 [main]          DEBUG org.hibernate.jdbc.ConnectionManager - releasing JDBC connection [ (open PreparedStatements: 0, globally: 0) (open ResultSets: 0, globally: 0)]
2010-04-15 16:07:35,355 [main]          INFO  atomikos - atomikos connection proxy for conn1: url=jdbc:h2:mem:h2TestDB user=H2TESTDB: calling getWarnings...
2010-04-15 16:07:35,355 [main]          INFO  atomikos - atomikos connection proxy for conn1: url=jdbc:h2:mem:h2TestDB user=H2TESTDB: calling clearWarnings...
2010-04-15 16:07:35,484 [main]          INFO  atomikos - atomikos connection proxy for conn1: url=jdbc:h2:mem:h2TestDB user=H2TESTDB: close()...
2010-04-15 16:07:35,485 [main]          INFO  atomikos - XAResource.end ( 636F6D2E61746F6D696B6F732E737072696E672E6A6462632E746D2D64657630303030313030303639:636F6D2E61746F6D696B6F732E737072696E672E6A6462632E746D2D64657631 , XAResource.TMSUCCESS ) on resource h2jdbc represented by XAResource instance xads0: url=jdbc:h2:mem:h2TestDB;DB_CLOSE_ON_EXIT=FALSE;DB_CLOSE_DELAY=-1;IGNORECASE=TRUE user=h2TestDB
2010-04-15 16:07:35,487 [main]          DEBUG org.hibernate.event.def.AbstractFlushingEventListener - processing flush-time cascades
2010-04-15 16:07:35,488 [main]          DEBUG org.hibernate.event.def.AbstractFlushingEventListener - dirty checking collections
2010-04-15 16:07:35,491 [main]          DEBUG org.hibernate.event.def.AbstractFlushingEventListener - Flushed: 0 insertions, 0 updates, 0 deletions to 1 objects
2010-04-15 16:07:35,492 [main]          DEBUG org.hibernate.event.def.AbstractFlushingEventListener - Flushed: 0 (re)creations, 0 updates, 0 removals to 0 collections
2010-04-15 16:07:35,493 [main]          DEBUG org.hibernate.pretty.Printer - listing entities:
2010-04-15 16:07:35,493 [main]          DEBUG org.hibernate.pretty.Printer - de.sf.model.TestEntity{id=1, text=null, value=1}
2010-04-15 16:07:35,493 [main]          DEBUG org.hibernate.jdbc.ConnectionManager - aggressively releasing JDBC connection
2010-04-15 16:07:35,494 [main]          INFO  atomikos - commit() done (by application) of transaction com.atomikos.spring.jdbc.tm-dev0000100069
2010-04-15 16:07:35,498 [Atomikos:3]    INFO  atomikos - XAResource.prepare ( 636F6D2E61746F6D696B6F732E737072696E672E6A6462632E746D2D64657630303030313030303639:636F6D2E61746F6D696B6F732E737072696E672E6A6462632E746D2D64657631 ) returning OK on resource h2jdbc represented by XAResource instance xads0: url=jdbc:h2:mem:h2TestDB;DB_CLOSE_ON_EXIT=FALSE;DB_CLOSE_DELAY=-1;IGNORECASE=TRUE user=h2TestDB
2010-04-15 16:07:35,517 [Atomikos:3]    INFO  atomikos - XAResource.commit ( 636F6D2E61746F6D696B6F732E737072696E672E6A6462632E746D2D64657630303030313030303639:636F6D2E61746F6D696B6F732E737072696E672E6A6462632E746D2D64657631 , false ) on resource h2jdbc represented by XAResource instance xads0: url=jdbc:h2:mem:h2TestDB;DB_CLOSE_ON_EXIT=FALSE;DB_CLOSE_DELAY=-1;IGNORECASE=TRUE user=h2TestDB
2010-04-15 16:07:35,520 [main]          INFO  atomikos - afterCompletion ( STATUS_COMMITTED ) called  on Synchronization: org.compass.gps.device.hibernate.embedded.CompassEventListener$CompassEmbeddedSyncronization@4e26d560
2010-04-15 16:07:35,520 [main]          INFO  atomikos - afterCompletion ( STATUS_COMMITTED ) called  on Synchronization: org.hibernate.ejb.AbstractEntityManagerImpl$1@5782b9b5
2010-04-15 16:07:35,575 [main]          INFO  atomikos - afterCompletion ( STATUS_COMMITTED ) called  on Synchronization: org.compass.core.transaction.JTASyncTransaction$JTATransactionSynchronization@4eff0d4b
2010-04-15 16:07:35,575 [main]          INFO  atomikos - afterCompletion ( STATUS_COMMITTED ) called  on Synchronization: org.hibernate.transaction.CacheSynchronization
2010-04-15 16:07:35,576 [main]          DEBUG org.hibernate.ejb.EntityManagerImpl - Closing entity manager after transaction completion
2010-04-15 16:07:35,577 [main]          INFO  atomikos - afterCompletion ( STATUS_COMMITTED ) called  on Synchronization: org.hibernate.ejb.EntityManagerImpl$1@7da2467a


Looking at the CMT Factory it has access to the Atomikos JTA objects throught the configured TransactionManager (via TransactionManagerLookup).
The Trace above seems ok to me - so actual imho i am using Hibernate + JTA via Atomikos without configuring the JTA Factory for hibernate.

Looks ok indeed - although I am not sure why.

In any case, I have fixed (I think) the original problem in our AtomikosJTATransactionFactory also. To be out soon.

Thanks

Looking here:

http://docs.jboss.org/hibernate/stable/entitymanager/reference/en/html/transactions.html

5.2.2 Using JTA

[...]
It is important to let Hibernate EntityManager define the hibernate.transaction.factory_class (ie not overriding this value). Remember to also set org.hibernate.transaction.manager_lookup_class.
[...]

So imho in a CMT environment (meaning hibernate does not control the transaction but someone else - e.g. using JTA via Atomikos) the factory must not be overridden anymore. It enough to set the TxManager-Lookup Class to get things running (and it seems to work).

Looks like you are right.

Thanks a lot! I have updated the documentation in the Wiki to reflect this.