Hello, I have similar problems as pkorror in JBoss-4.0.5.GA. After I have prevent the NPEs via the Log4j konfiguration, I get also STATUS_NO_TRANSACTION errors. Like this: | 2006-10-30 14:37:00,734 WARN [WorkManager(3)-20] [org.hibernate.cache.OptimisticTreeCache] Unexpected optimistic lock check on inserting data | 2006-10-30 14:37:00,859 ERROR [WorkManager(3)-20] [org.jboss.resource.adapter.jms.inflow.JmsServerSession] org.jboss.resource.adapter.jms.inflow.JmsServerSession@1c2a7f5 failed to commit/rollback | org.jboss.tm.JBossRollbackException: Unable to commit, tx=TransactionImpl:XidImpl[FormatId=257, GlobalId=pc3275/212, BranchQual=, localId=212] status=STATUS_NO_TRANSACTION; - nested throwable: (java.lang.RuntimeException: ) | at org.jboss.tm.TransactionImpl.commit(TransactionImpl.java:372) | at org.jboss.tm.TxManager.commit(TxManager.java:240) | at org.jboss.resource.adapter.jms.inflow.JmsServerSession$XATransactionDemarcationStrategy.end(JmsServerSession.java:471) | at org.jboss.resource.adapter.jms.inflow.JmsServerSession.run(JmsServerSession.java:260) | at org.jboss.resource.work.WorkWrapper.execute(WorkWrapper.java:204) | at org.jboss.util.threadpool.BasicTaskWrapper.run(BasicTaskWrapper.java:275) | at EDU.oswego.cs.dl.util.concurrent.PooledExecutor$Worker.run(PooledExecutor.java:743) | at java.lang.Thread.run(Thread.java:595) | Caused by: java.lang.RuntimeException: | at org.jboss.cache.interceptors.TxInterceptor$LocalSynchronizationHandler.beforeCompletion(TxInterceptor.java:1091) | at org.jboss.cache.interceptors.OrderedSynchronizationHandler.beforeCompletion(OrderedSynchronizationHandler.java:75) | at org.jboss.tm.TransactionImpl.doBeforeCompletion(TransactionImpl.java:1491) | at org.jboss.tm.TransactionImpl.beforePrepare(TransactionImpl.java:1110) | at org.jboss.tm.TransactionImpl.commit(TransactionImpl.java:324) | ... 7 more | Caused by: java.lang.NullPointerException | at java.lang.Integer.compareTo(Integer.java:939) | at java.lang.Integer.compareTo(Integer.java:35) | at org.hibernate.util.ComparableComparator.compare(ComparableComparator.java:13) | at org.hibernate.cache.OptimisticTreeCache$DataVersionAdapter.newerThan(OptimisticTreeCache.java:297) | at org.jboss.cache.interceptors.OptimisticValidatorInterceptor.simpleValidate(OptimisticValidatorInterceptor.java:124) | at org.jboss.cache.interceptors.OptimisticValidatorInterceptor.validateNodes(OptimisticValidatorInterceptor.java:101) | at org.jboss.cache.interceptors.OptimisticValidatorInterceptor.invoke(OptimisticValidatorInterceptor.java:66) | at org.jboss.cache.interceptors.Interceptor.invoke(Interceptor.java:68) | at org.jboss.cache.interceptors.OptimisticLockingInterceptor.invoke(OptimisticLockingInterceptor.java:95) | at org.jboss.cache.interceptors.Interceptor.invoke(Interceptor.java:68) | at org.jboss.cache.interceptors.TxInterceptor.runPreparePhase(TxInterceptor.java:804) | at org.jboss.cache.interceptors.TxInterceptor$LocalSynchronizationHandler.beforeCompletion(TxInterceptor.java:1069) | ... 11 more | | or this: | 2006-10-30 13:30:47,301 ERROR [WorkManager(3)-23] [org.jboss.resource.adapter.jms.inflow.JmsServerSession] org.jboss.resource.adapter.jms.inflow.JmsServerSession@1550f21 failed to commit/rollback | org.jboss.tm.JBossRollbackException: Unable to commit, tx=TransactionImpl:XidImpl[FormatId=257, GlobalId=pc3275/188, BranchQual=, localId=188] status=STATUS_NO_TRANSACTION; - nested throwable: (java.lang.RuntimeException: ) | at org.jboss.tm.TransactionImpl.commit(TransactionImpl.java:372) | at org.jboss.tm.TxManager.commit(TxManager.java:240) | at org.jboss.resource.adapter.jms.inflow.JmsServerSession$XATransactionDemarcationStrategy.end(JmsServerSession.java:471) | at org.jboss.resource.adapter.jms.inflow.JmsServerSession.run(JmsServerSession.java:260) | at org.jboss.resource.work.WorkWrapper.execute(WorkWrapper.java:204) | at org.jboss.util.threadpool.BasicTaskWrapper.run(BasicTaskWrapper.java:275) | at EDU.oswego.cs.dl.util.concurrent.PooledExecutor$Worker.run(PooledExecutor.java:743) | at java.lang.Thread.run(Thread.java:595) | Caused by: java.lang.RuntimeException: | at org.jboss.cache.interceptors.TxInterceptor$LocalSynchronizationHandler.beforeCompletion(TxInterceptor.java:1091) | at org.jboss.cache.interceptors.OrderedSynchronizationHandler.beforeCompletion(OrderedSynchronizationHandler.java:75) | at org.jboss.tm.TransactionImpl.doBeforeCompletion(TransactionImpl.java:1491) | at org.jboss.tm.TransactionImpl.beforePrepare(TransactionImpl.java:1110) | at org.jboss.tm.TransactionImpl.commit(TransactionImpl.java:324) | ... 7 more | Caused by: org.jboss.cache.CacheException: DataNode [/stockdata/IntervalStatus/de.spiegel.pistats.db.stock.IntervalStatus#de.spiegel.pistats.db.stock.IntervalStatusPK@e10feb05] version org.hibernate.cache.OptimisticTreeCache$DataVersionAdapter@358a80 [current=1, previous=0, src=SingleTableEntityPersister(de.spiegel.pistats.db.stock.IntervalStatus)] is newer than workspace node org.hibernate.cache.OptimisticTreeCache$DataVersionAdapter@358a80 [current=1, previous=0, src=SingleTableEntityPersister(de.spiegel.pistats.db.stock.IntervalStatus)] | at org.jboss.cache.interceptors.OptimisticValidatorInterceptor.simpleValidate(OptimisticValidatorInterceptor.java:127) | at org.jboss.cache.interceptors.OptimisticValidatorInterceptor.validateNodes(OptimisticValidatorInterceptor.java:101) | at org.jboss.cache.interceptors.OptimisticValidatorInterceptor.invoke(OptimisticValidatorInterceptor.java:66) | at org.jboss.cache.interceptors.Interceptor.invoke(Interceptor.java:68) | at org.jboss.cache.interceptors.OptimisticLockingInterceptor.invoke(OptimisticLockingInterceptor.java:95) | at org.jboss.cache.interceptors.Interceptor.invoke(Interceptor.java:68) | at org.jboss.cache.interceptors.TxInterceptor.runPreparePhase(TxInterceptor.java:804) | at org.jboss.cache.interceptors.TxInterceptor$LocalSynchronizationHandler.beforeCompletion(TxInterceptor.java:1069) | ... 11 more | | This happens, when I have a little bit more load und only with optimistic locking. Funny: Hibernate statitics are reporting second level cache hits, but there ist nothing in the cache (NumberOfNodes is 0). I will now switch back to pessimistic locking, but I will be glad, when I here that optimistic locking is working, to optimize the throughput. greeting Klaus Erber View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3981766#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...