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POTransaction timeout with TransactionAttributeType.NOT_SUPPORTED
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  1. POTransaction timeout with TransactionAttributeType.NOT_SUPPORTED
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    copied!<p>I have a J2EE application (weblogic, oracle) that sends large data over internet. But it suffers of transaction timeout. So I refactored the application following way:</p> <p>Timer has container managed transactions, but callback has NOT_SUPPORTED flag.</p> <pre><code>@Stateless(mappedName = "TransferTimer", name = "TransferTimer") public class TransferTimer implements ITransferTimerLocal { @Timeout @TransactionAttribute(TransactionAttributeType.NOT_SUPPORTED) public void timeoutCallback(final Timer timer) { vo = transferController.prepareTransfer(); if (vo != null) { transferController.sendData(vo); transferController.finishTransfer(vo); } .. </code></pre> <p>New bean was introduced with bean managed transactions. The long running method does not deal with transactions and database at all:</p> <pre><code>@Stateless @TransactionManagement(value= TransactionManagementType.BEAN) public class TransferController implements TransferControllerLocal { public TransferVO prepareTransfer() { TransferVO vo = null; try { userTransaction.begin(); .. // no transactions must be there - it may take too much time public void sendData(TransferVO vo) { client.sendFile(vo.getOrder(), vo.getArchive()); } </code></pre> <p>Though TransactionTimeout exception is thrown, when client.sendFile() successfuly finishes.</p> <pre><code>Caused by: weblogic.transaction.internal.TimedOutException: Transaction timed out after 61 seconds BEA1-263D00276AD109CA0CA4 at weblogic.transaction.internal.ServerTransactionImpl.wakeUp(ServerTransactionImpl.java:1788) at weblogic.transaction.internal.ServerTransactionManagerImpl.processTimedOutTransactions(ServerTransactionManagerImpl.java:1676) at weblogic.transaction.internal.TransactionManagerImpl.wakeUp(TransactionManagerImpl.java:1988) at weblogic.transaction.internal.ServerTransactionManagerImpl.wakeUp(ServerTransactionManagerImpl.java:1586) at weblogic.transaction.internal.WLSTimer.timerExpired(WLSTimer.java:35) </code></pre> <p>I do not understand it. Why does it fail? </p>
 

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