I have the error below which happens during a call to e EJB3 SFSB. There is no explicit rollback happening in the code and the session is (obviously) managed by the container. I am using JBoss 4.0.4GA. | 2006-07-17 06:02:05,374 ERROR [org.hibernate.LazyInitializationException] failed to lazily initialize a collection of role: org.ictrace.server.pm.DMWeightGroupTotalBean.batches, no session or session was closed | org.hibernate.LazyInitializationException: failed to lazily initialize a collection of role: org.ictrace.server.pm.DMWeightGroupTotalBean.batches, no session or session was closed at org.hibernate.collection.AbstractPersistentCollection.throwLazyInitializationException(AbstractPersistentCollection.java:358) at org.hibernate.collection.AbstractPersistentCollection.throwLazyInitializationExceptionIfNotConnected(AbstractPersistentCollection.java:350) at org.hibernate.collection.AbstractPersistentCollection.initialize(AbstractPersistentCollection.java:343) at org.hibernate.collection.AbstractPersistentCollection.read(AbstractPersistentCollection.java:86) at org.hibernate.collection.PersistentBag.iterator(PersistentBag.java:246) at package.WeightMediatorBaseEx.addWGTBatch(WeightMediatorBaseEx.java:359) at ... | The code where the exception is invoced looks like this : | private void addWGTBatch( DMWeightGroupTotalBean obj, String batchRef ) | throws UnidConstraintViolation | { | if ( obj == null || batchRef == null ) return; | try | { | Collection<DMWeightGroupTotal_BatchesBean> batches = obj.getBatches(); | if ( batches == null ) | { | batches = new ArrayList<DMWeightGroupTotal_BatchesBean>(); | obj.setBatches( batches ); | } | // check if the object already exists | for ( DMWeightGroupTotal_BatchesBean bb : batches ) // error is reported on this line | { | if ( batchRef.equals( bb.getBatches() ) ) return; | } | batches.add( new DMWeightGroupTotal_BatchesBean( batchRef ) ); | obj.modified(); | } | catch ( Exception ex ) | { | throw new UnidConstraintViolation( UCV_PROBLEM_WHEN_ADDING_BATCH_TO_THE_TOTAL_LINE, batchRef, ex ); | } | } | Does anybody have any idea what is causing this error and how I can fix / work around it? Thanks, Joachim View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3958850#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...