[jboss-user] [Persistence, JBoss/CMP, Hibernate, Database] - Using JBOSS optimistic tree cache and Websphere 6.1.0.13

[myspri]

Hi,
   While trying to use hibernate 3.2.5 with WAS 6.1.0.13 I am facing these issues:
My hibernate cfg file has the transaction manager set up to be 

org.hibernate.transaction.WebSphereExtendedJTATransactionLookup which is recommended 

while using hibernate with Websphere 6.1. I am using CMT transaction manager factory. However this gives me the error:

aused by: java.lang.UnsupportedOperationException
	at 

org.hibernate.transaction.WebSphereExtendedJTATransactionLookup$TransactionManagerAdapte

r.suspend(WebSphereExtendedJTATransactionLookup.java:111)
	at org.jboss.cache.interceptors.TxInterceptor.invoke(TxInterceptor.java:78)
	at org.jboss.cache.interceptors.Interceptor.invoke(Interceptor.java:67)
	at 

org.jboss.cache.interceptors.CacheMgmtInterceptor.invoke(CacheMgmtInterceptor.java:80)
	at org.jboss.cache.TreeCache.invokeMethod(TreeCache.java:4241)
	... 40 more

Then going through JBOSS discussion boards, I understood that I need to set the 

transaction manager to be org.hibernate.transaction.WebSphereTransactionManagerLookup 

which is meant to be used for lower versions of websphere. By doing so, this error 

disppeared, however I got the following problem while using optimistic tree cache.

[1/25/08 11:49:45:664 PST] 00000029 RegisteredSyn E   WTRN0074E: Exception caught from 

before_completion synchronization operation: org.jboss.util.NestedRuntimeException: ; - 

nested throwable: (org.jboss.cache.lock.TimeoutException: write lock for / could not be 

acquired after 15000 ms. Locks: Read lock owners: {}
Write lock owner: GlobalTransaction::1
 (caller=GlobalTransaction::2, lock info: write owner=GlobalTransaction::1 

(activeReaders=0, activeWriter=Thread[QTMSessionPool,5,], waitingReaders=0, 

waitingWriters=1, waitingUpgrader=0)))
	at 

org.jboss.cache.interceptors.TxInterceptor$LocalSynchronizationHandler.beforeCompletion(

TxInterceptor.java:1022)
	at 

org.jboss.cache.interceptors.OrderedSynchronizationHandler.beforeCompletion(OrderedSynch

ronizationHandler.java:72)
	at 

com.ibm.ws.Transaction.JTA.RegisteredSyncs.distributeBefore(RegisteredSyncs.java:242)
	at 

com.ibm.ws.Transaction.JTA.TransactionImpl.prePrepare(TransactionImpl.java:2389)
	at 

com.ibm.ws.Transaction.JTA.TransactionImpl.stage1CommitProcessing(TransactionImpl.java:1

622)
	at 

com.ibm.ws.Transaction.JTA.TransactionImpl.processCommit(TransactionImpl.java:1593)
	at com.ibm.ws.Transaction.JTA.TransactionImpl.commit(TransactionImpl.java:1528)
	at com.ibm.ws.Transaction.JTA.TranManagerImpl.commit(TranManagerImpl.java:237)
	at com.ibm.ws.Transaction.JTA.TranManagerSet.commit(TranManagerSet.java:162)
	at com.ibm.ejs.csi.TranStrategy.commit(TranStrategy.java:756)
	at com.ibm.ejs.csi.TranStrategy.postInvoke(TranStrategy.java:181)
	at 

com.ibm.ejs.csi.TransactionControlImpl.postInvoke(TransactionControlImpl.java:581)
	at com.ibm.ejs.container.EJSContainer.postInvoke(EJSContainer.java:3910)
	at 

com.ibm.ejs.container.MessageEndpointHandler.afterDelivery(MessageEndpointHandler.java:1

353)
	at 

com.ibm.ejs.container.MessageEndpointHandler.invokeMessageEndpointMethod(MessageEndpoint

Handler.java:775)
	at 

com.ibm.ejs.container.MessageEndpointHandler.invoke(MessageEndpointHandler.java:736)
	at $Proxy0.afterDelivery(Unknown Source)
	at 

com.ibm.ws.sib.ra.inbound.impl.SibRaTransactionalDispatcher.afterDelivery(SibRaTransacti

onalDispatcher.java:468)
	at 

com.ibm.ws.sib.ra.inbound.impl.SibRaDispatcher.dispatch(SibRaDispatcher.java:720)
	at 

com.ibm.ws.sib.ra.inbound.impl.SibRaSingleProcessListener$SibRaWork.run(SibRaSingleProce

ssListener.java:584)
	at com.ibm.ejs.j2c.work.WorkProxy.run(WorkProxy.java:418)
	at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1469)
Caused by: org.jboss.cache.lock.TimeoutException: write lock for / could not be acquired 

after 15000 ms. Locks: Read lock owners: {}
Write lock owner: GlobalTransaction::1
 (caller=GlobalTransaction::2, lock info: write owner=GlobalTransaction::1 

(activeReaders=0, activeWriter=Thread[QTMSessionPool,5,], waitingReaders=0, 

waitingWriters=1, waitingUpgrader=0))
	at org.jboss.cache.lock.IdentityLock.acquireWriteLock(IdentityLock.java:169)
	at org.jboss.cache.TreeNode.acquireWriteLock(TreeNode.java:546)
	at org.jboss.cache.TreeNode.acquire(TreeNode.java:506)
	at 

org.jboss.cache.interceptors.OptimisticLockingInterceptor.lockNodes(OptimisticLockingInt

erceptor.java:141)
	at 

org.jboss.cache.interceptors.OptimisticLockingInterceptor.invoke(OptimisticLockingInterc

eptor.java:68)
	at org.jboss.cache.interceptors.Interceptor.invoke(Interceptor.java:67)
	at 

org.jboss.cache.interceptors.TxInterceptor.runPreparePhase(TxInterceptor.java:754)
	at 

org.jboss.cache.interceptors.TxInterceptor$LocalSynchronizationHandler.beforeCompletion(

TxInterceptor.java:1000)
	... 21 more

Can somebody tell me what is wrong?

Thanks,
Priya



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