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