Hi, I have deployed my application on jBoss with Mysql5 Db. But every few hours getting errors like below and restarting my jboss srever and working fine: what it causes 08:38:28,307 INFO [STDOUT] javax.ejb.EJBException: Transaction marked for rollback - probably a timeout. 08:38:28,307 INFO [STDOUT] at org.jboss.ejb.plugins.lock.SimpleReadWriteEJBLock.checkTransaction(SimpleReadWriteEJBLock.java:326) 08:38:28,307 INFO [STDOUT] at org.jboss.ejb.plugins.lock.SimpleReadWriteEJBLock.waitAWhile(SimpleReadWriteEJBLock.java:205) 08:38:28,307 INFO [STDOUT] at org.jboss.ejb.plugins.lock.SimpleReadWriteEJBLock.getWriteLock(SimpleReadWriteEJBLock.java:183) 08:38:28,307 INFO [STDOUT] at org.jboss.ejb.plugins.lock.SimpleReadWriteEJBLock.schedule(SimpleReadWriteEJBLock.java:89) 08:38:28,307 INFO [STDOUT] at org.jboss.ejb.plugins.EntitySynchronizationInterceptor.invokeHome(EntitySynchronizationInterceptor.java:206) 08:38:28,307 INFO [STDOUT] at org.jboss.resource.connectionmanager.CachedConnectionInterceptor.invokeHome(CachedConnectionInterceptor.java:212) 08:38:28,307 INFO [STDOUT] at org.jboss.ejb.plugins.AbstractInterceptor.invokeHome(AbstractInterceptor.java:90) 08:38:28,308 INFO [STDOUT] at org.jboss.ejb.plugins.EntityInstanceInterceptor.invokeHome(EntityInstanceInterceptor.java:117) 08:38:28,308 INFO [STDOUT] at org.jboss.ejb.plugins.EntityLockInterceptor.invokeHome(EntityLockInterceptor.java:61) 08:38:28,308 INFO [STDOUT] at org.jboss.ejb.plugins.EntityCreationInterceptor.invokeHome(EntityCreationInterceptor.java:28) 08:38:28,308 INFO [STDOUT] at org.jboss.ejb.plugins.CallValidationInterceptor.invokeHome(CallValidationInterceptor.java:41) 08:38:28,308 INFO [STDOUT] at org.jboss.ejb.plugins.AbstractTxInterceptor.invokeNext(AbstractTxInterceptor.java:109) 08:38:28,308 INFO [STDOUT] at org.jboss.ejb.plugins.TxInterceptorCMT.runWithTransactions(TxInterceptorCMT.java:313) 08:38:28,308 INFO [STDOUT] at org.jboss.ejb.plugins.TxInterceptorCMT.invokeHome(TxInterceptorCMT.java:126) 08:38:28,308 INFO [STDOUT] at org.jboss.ejb.plugins.SecurityInterceptor.invokeHome(SecurityInterceptor.java:101) 08:38:28,308 INFO [STDOUT] at org.jboss.ejb.plugins.LogInterceptor.invokeHome(LogInterceptor.java:121) 08:38:28,309 INFO [STDOUT] at org.jboss.ejb.plugins.ProxyFactoryFinderInterceptor.invokeHome(ProxyFactoryFinderInterceptor.java:93) 08:38:28,309 INFO [STDOUT] at org.jboss.ejb.EntityContainer.internalInvokeHome(EntityContainer.java:508) 08:38:28,309 INFO [STDOUT] at org.jboss.ejb.Container.invoke(Container.java:891) 08:38:28,309 INFO [STDOUT] at org.jboss.ejb.plugins.local.BaseLocalProxyFactory.invokeHome(BaseLocalProxyFactory.java:342) 08:38:28,309 INFO [STDOUT] at org.jboss.ejb.plugins.local.LocalHomeProxy.invoke(LocalHomeProxy.java:118) 08:38:28,309 INFO [STDOUT] at $Proxy386.create(Unknown Source) 08:38:28,309 INFO [STDOUT] at net4nuts.mobilemail.sessionbeans.mmaillogs.MMailLogsBean.moRequestResponseLogging(MMailLogsBean.java:135) 08:38:28,309 INFO [STDOUT] at net4nuts.mobilemail.sessionbeans.mmaillogs.MMailLogsBean.moRequestResponseLogging(MMailLogsBean.java:108) 08:38:28,309 INFO [STDOUT] at sun.reflect.GeneratedMethodAccessor102.invoke(Unknown Source) 08:38:28,309 INFO [STDOUT] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) Please send me the valuable solution if any one have experienced with this kind of errors.Its really appreciate if any one help me out here. Thanks Biswajit View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4085341#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...