[jboss-user] [JBossCache] - NPE when using optimistic locking with JbossCache 1.4.0.SP1,

I am trying to setup JbossCache 1.4.0.sp1 to work with hibernate 3.2.GA using optimistic locking. When I use pessimistic locking I don;t have any errors but when I use OPTIMISTIC then I get many NullPointerExceptions when using optimistic locking with JbossCache 1.4.0.SP1, hibernate 3.2.GA. The errors look like: [org.jboss.cache.interceptors.TxInterceptor] There was a problem handling this request java.lang.NullPointerException at org.jboss.cache.interceptors.OptimisticNodeInterceptor.invoke(OptimisticNodeInterceptor.java:68) at org.jboss.cache.interceptors.Interceptor.invoke(Interceptor.java:68) at org.jboss.cache.interceptors.OptimisticCreateIfNotExistsInterceptor.invoke(OptimisticCreateIfNotExistsInterceptor.java:69) at org.jboss.cache.interceptors.Interceptor.invoke(Interceptor.java:68) at org.jboss.cache.interceptors.OptimisticValidatorInterceptor.invoke(OptimisticValidatorInterceptor.java:75) at org.jboss.cache.interceptors.Interceptor.invoke(Interceptor.java:68) at org.jboss.cache.interceptors.OptimisticLockingInterceptor.invoke(OptimisticLockingInterceptor.java:122) at org.jboss.cache.interceptors.Interceptor.invoke(Interceptor.java:68) at org.jboss.cache.interceptors.TxInterceptor.handleNonTxMethod(TxInterceptor.java:345) at org.jboss.cache.interceptors.TxInterceptor.invoke(TxInterceptor.java:156) at org.jboss.cache.interceptors.Interceptor.invoke(Interceptor.java:68) at org.jboss.cache.interceptors.CacheMgmtInterceptor.invoke(CacheMgmtInterceptor.java:183) at org.jboss.cache.TreeCache.invokeMethod(TreeCache.java:5520) at org.jboss.cache.TreeCache.remove(TreeCache.java:3742) at org.jboss.cache.TreeCache.remove(TreeCache.java:3297) at org.hibernate.cache.OptimisticTreeCache.writeLoad(OptimisticTreeCache.java:76) at org.hibernate.cache.TransactionalCache.put(TransactionalCache.java:55) at org.hibernate.engine.TwoPhaseLoad.initializeEntity(TwoPhaseLoad.java:156) at org.hibernate.loader.Loader.initializeEntitiesAndCollections(Loader.java:842) at org.hibernate.loader.Loader.doQuery(Loader.java:717) at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:224) at org.hibernate.loader.Loader.doList(Loader.java:2144) at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2028) at org.hibernate.loader.Loader.list(Loader.java:2023) at org.hibernate.loader.criteria.CriteriaLoader.list(CriteriaLoader.java:95) at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1569) at org.hibernate.impl.CriteriaImpl.list(CriteriaImpl.java:283) My config file is like: treecache.xml ... org.jboss.cache.GenericTransactionManagerLookup OPTIMISTIC LOCAL ... hibernate.cfg.xml ... org.hibernate.cache.OptimisticTreeCacheProvider ... any ideas on what is causing the error? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3978739#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...