I am using Hibernate 2, Jboss 3.2.3 and PostgreSql 7.3.  I got a 
transaction roll back and an error which I donot really know what it is.  
Any hint or help is appreciated.

Here is the error

7:04:05,015 ERROR [LogInterceptor] TransactionRolledbackException in 
method: public abstract com.ejb.interfaces.Tuser 
com.ejb.interfaces.TuserHome.create(com.ejb.dto.TuserData) throws 
javax.ejb.CreateException,java.rmi.RemoteException, causedBy: 
org.jboss.tm.JBossRollbackException: Unable to commit, 
tx=TransactionImpl:XidImpl [FormatId=257, GlobalId=bc2002.local//25, 
BranchQual=] status=STATUS_NO_TRANSACTION; - nested throwable: 
(javax.ejb.EJBException: null; CausedByException is: 
null) 
at org.jboss.tm.TransactionImpl.commit(TransactionImpl.java:413) 
at 
org.jboss.ejb.plugins.TxInterceptorCMT.endTransaction(TxInterceptorCMT.j
ava:398) 
at 
org.jboss.ejb.plugins.TxInterceptorCMT.runWithTransactions(TxInterceptor
CMT.java:277) 
at 
org.jboss.ejb.plugins.TxInterceptorCMT.invokeHome(TxInterceptorCMT.java:
98) 
at 
org.jboss.ejb.plugins.SecurityInterceptor.invokeHome(SecurityInterceptor
.java:92) 
at org.jboss.ejb.plugins.LogInterceptor.invokeHome(LogInterceptor.java:
120) 
at 
org.jboss.ejb.plugins.ProxyFactoryFinderInterceptor.invokeHome(ProxyFact
oryFinderInterceptor.java:93) 
at 
org.jboss.ejb.EntityContainer.internalInvokeHome(EntityContainer.java:
483) 
at org.jboss.ejb.Container.invoke(Container.java:720) 
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.jav
a:39) 
at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessor
Impl.java:25) 
at java.lang.reflect.Method.invoke(Method.java:324) 
at 
org.jboss.mx.capability.ReflectedMBeanDispatcher.invoke(ReflectedMBeanDi
spatcher.java:284) 
at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:546) 
at org.jboss.invocation.jrmp.server.JRMPInvoker.invoke(JRMPInvoker.java:
367) 
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.jav
a:39) 
at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessor
Impl.java:25) 
at java.lang.reflect.Method.invoke(Method.java:324) 
at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:261) 
at sun.rmi.transport.Transport$1.run(Transport.java:148) 
at java.security.AccessController.doPrivileged(Native Method) 
at sun.rmi.transport.Transport.serviceCall(Transport.java:144) 
at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:
460) 
at 
sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.ja
va:701) 
at java.lang.Thread.run(Thread.java:552) 
Caused by: javax.ejb.EJBException: null; CausedByException is: 
null 
at 
org.jboss.ejb.plugins.BMPPersistenceManager.storeEntity(BMPPersistenceMa
nager.java:475) 
at 
org.jboss.resource.connectionmanager.CachedConnectionInterceptor.storeEn
tity(CachedConnectionInterceptor.java:387) 
at org.jboss.ejb.EntityContainer.storeEntity(EntityContainer.java:714) 
at 
org.jboss.ejb.GlobalTxEntityMap.synchronizeEntities(GlobalTxEntityMap.ja
va:149) 
at 
org.jboss.ejb.GlobalTxEntityMap$GlobalTxEntityMapSynchronize.beforeCompl
etion(GlobalTxEntityMap.java:215) 
at org.jboss.tm.TransactionImpl.doBeforeCompletion(TransactionImpl.java:
1308) 
at org.jboss.tm.TransactionImpl.commit(TransactionImpl.java:347) 
... 26 more 

thanks 

bc2002