[jboss-user] [EJB/JBoss] - org.jboss.tm.JBossRollbackException

I have a stateless session bean which accesses an EJB3 entity. When I use entitymanager.find() it works fine, but when i do persist() i get the following error: org.jboss.tm.JBossRollbackException: Unable to commit, tx=TransactionImpl:XidImpl[FormatId=257, GlobalId=jupiter/31, BranchQual=, localId=31] status=STATUS_NO_TRANSACTION; - nested throwable: (javax.persistence.PersistenceException: org.hibernate.exception.GenericJDBCException: Could not execute JDBC batch update) | | | java.lang.RuntimeException: org.jboss.tm.JBossRollbackException: Unable to commit, tx=TransactionImpl:XidImpl[FormatId=257, GlobalId=jupiter/31, BranchQual=, localId=31] status=STATUS_NO_TRANSACTION; - nested throwable: (javax.persistence.PersistenceException: org.hibernate.exception.GenericJDBCException: Could not execute JDBC batch update) at org.jboss.aspects.tx.TxPolicy.handleEndTransactionException(TxPolicy.java:198) at org.jboss.aspects.tx.TxPolicy.endTransaction(TxPolicy.java:180) at org.jboss.aspects.tx.TxPolicy.invokeInOurTx(TxPolicy.java:87) at org.jboss.aspects.tx.TxInterceptor$RequiresNew.invoke(TxInterceptor.java:275) at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) at org.jboss.aspects.tx.TxPropagationInterceptor.invoke(TxPropagationInterceptor.java:76) at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) at org.jboss.ejb3.stateless.StatelessInstanceInterceptor.invoke(StatelessInstanceInterceptor.java:62) at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) at org.jboss.aspects.security.AuthenticationInterceptor.invoke(AuthenticationInterceptor.java:78) at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) at org.jboss.ejb3.ENCPropagationInterceptor.invoke(ENCPropagationInterceptor.java:47) at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) at org.jboss.ejb3.asynchronous.AsynchronousInterceptor.invoke(AsynchronousInterceptor.java:106) at | etc etc the method i am calling is: @TransactionAttribute(TransactionAttributeType.REQUIRES_ | public String mymethod() { | ... | entitymanager.persist(mybean); | } where mybean is as follows: anonymous wrote : | public class Mybean implements Serializable { | | @Id | @Column (unique=true, nullable=false, length=32) | private String name; | | public MyBean() {...} | | .......... | any ideas why! it is driving me insane! i have been working on it for a week now... no success! thanks guys! View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3996878#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...