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我的應用程序試圖在DB2服務器上的2個數據庫上執行分佈式事務，應用程序服務器是websphere 6.1並使用Atomikos作爲TM。 javax.transaction.RollbackException：事務提交拋出異常：設置爲僅回滾的事務
UserTranaction.commit（）與下面的異常交易失敗設置爲僅回滾 完整的堆棧跟蹤是：
[3/26/12 12:08:43:880 EDT] 0000001f SystemErr R javax.transaction.RollbackException: Transaction set to rollback only
[3/26/12 12:08:43:896 EDT] 0000001f SystemErr R at com.atomikos.icatch.jta.TransactionImp.rethrowAsJtaRollbackException(TransactionImp.java:70)
[3/26/12 12:08:43:896 EDT] 0000001f SystemErr R at com.atomikos.icatch.jta.TransactionImp.commit(TransactionImp.java:250)
[3/26/12 12:08:43:896 EDT] 0000001f SystemErr R at com.atomikos.icatch.jta.TransactionManagerImp.commit(TransactionManagerImp.java:498)
[3/26/12 12:08:43:896 EDT] 0000001f SystemErr R at com.atomikos.icatch.jta.UserTransactionImp.commit(UserTransactionImp.java:129)
[3/26/12 12:08:43:896 EDT] 0000001f SystemErr R at com.Servlet.InitialServlet.doPost(InitialServlet.java:131)
[3/26/12 12:08:43:896 EDT] 0000001f SystemErr R at javax.servlet.http.HttpServlet.service(HttpServlet.java:763)
[3/26/12 12:08:43:896 EDT] 0000001f SystemErr R at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
[3/26/12 12:08:43:896 EDT] 0000001f SystemErr R at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1101)
[3/26/12 12:08:43:896 EDT] 0000001f SystemErr R at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:569)
[3/26/12 12:08:43:896 EDT] 0000001f SystemErr R at com.ibm.ws.wswebcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:478)
[3/26/12 12:08:43:896 EDT] 0000001f SystemErr R at com.ibm.ws.webcontainer.webapp.WebApp.handleRequest(WebApp.java:3440)
[3/26/12 12:08:43:896 EDT] 0000001f SystemErr R at com.ibm.ws.webcontainer.webapp.WebGroup.handleRequest(WebGroup.java:267)
[3/26/12 12:08:43:896 EDT] 0000001f SystemErr R at com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:815)
[3/26/12 12:08:43:896 EDT] 0000001f SystemErr R at com.ibm.ws.wswebcontainer.WebContainer.handleRequest(WebContainer.java:1461)
[3/26/12 12:08:43:896 EDT] 0000001f SystemErr R at com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:118)
[3/26/12 12:08:43:896 EDT] 0000001f SystemErr R at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:458)
[3/26/12 12:08:43:896 EDT] 0000001f SystemErr R at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewInformation(HttpInboundLink.java:387)
[3/26/12 12:08:43:896 EDT] 0000001f SystemErr R at com.ibm.ws.http.channel.inbound.impl.HttpICLReadCallback.complete(HttpICLReadCallback.java:102)
[3/26/12 12:08:43:896 EDT] 0000001f SystemErr R at com.ibm.ws.tcp.channel.impl.AioReadCompletionListener.futureCompleted(AioReadCompletionListener.java:165)
[3/26/12 12:08:43:896 EDT] 0000001f SystemErr R at com.ibm.io.async.AbstractAsyncFuture.invokeCallback(AbstractAsyncFuture.java:217)
[3/26/12 12:08:43:896 EDT] 0000001f SystemErr R at com.ibm.io.async.AsyncChannelFuture.fireCompletionActions(AsyncChannelFuture.java:161)
[3/26/12 12:08:43:896 EDT] 0000001f SystemErr R at com.ibm.io.async.AsyncFuture.completed(AsyncFuture.java:136)
[3/26/12 12:08:43:896 EDT] 0000001f SystemErr R at com.ibm.io.async.ResultHandler.complete(ResultHandler.java:195)
[3/26/12 12:08:43:896 EDT] 0000001f SystemErr R at com.ibm.io.async.ResultHandler.runEventProcessingLoop(ResultHandler.java:743)
[3/26/12 12:08:43:896 EDT] 0000001f SystemErr R at com.ibm.io.async.ResultHandler$2.run(ResultHandler.java:873)
[3/26/12 12:08:43:896 EDT] 0000001f SystemErr R at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1473)
[3/26/12 12:08:43:896 EDT] 0000001f SystemErr R Caused by: com.atomikos.icatch.RollbackException: Transaction set to rollback only
at com.atomikos.icatch.imp.TxRollbackOnlyStateHandler.commit(TxRollbackOnlyStateHandler.java:84)
at com.atomikos.icatch.imp.CompositeTransactionImp.doCommit(CompositeTransactionImp.java:319)
at com.atomikos.icatch.imp.CompositeTerminatorImp.commit(CompositeTerminatorImp.java:79)
at com.atomikos.icatch.jta.TransactionImp.commit(TransactionImp.java:236)
at com.atomikos.icatch.jta.TransactionManagerImp.commit(TransactionManagerImp.java:498)
at com.atomikos.icatch.jta.UserTransactionImp.commit(UserTransactionImp.java:129)
at com.Servlet.InitialServlet.doPost(InitialServlet.java:131)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:763)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1101)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:569)
at com.ibm.ws.wswebcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:478)
at com.ibm.ws.webcontainer.webapp.WebApp.handleRequest(WebApp.java:3440)
at com.ibm.ws.webcontainer.webapp.WebGroup.handleRequest(WebGroup.java:267)
at com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:815)
at com.ibm.ws.wswebcontainer.WebContainer.handleRequest(WebContainer.java:1461)
at com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:118)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:458)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewInformation(HttpInboundLink.java:387)
at com.ibm.ws.http.channel.inbound.impl.HttpICLReadCallback.complete(HttpICLReadCallback.java:102)
at com.ibm.ws.tcp.channel.impl.AioReadCompletionListener.futureCompleted(AioReadCompletionListener.java:165)
at com.ibm.io.async.AbstractAsyncFuture.invokeCallback(AbstractAsyncFuture.java:217)
at com.ibm.io.async.AsyncChannelFuture.fireCompletionActions(AsyncChannelFuture.java:161)
at com.ibm.io.async.AsyncFuture.completed(AsyncFuture.java:136)
at com.ibm.io.async.ResultHandler.complete(ResultHandler.java:195)
at com.ibm.io.async.ResultHandler.runEventProcessingLoop(ResultHandler.java:743)
at com.ibm.io.async.ResultHandler$2.run(ResultHandler.java:873)
at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1473)
[3/26/12 12:08:43:896 EDT] 0000001f SystemErr R at com.atomikos.icatch.imp.TxRollbackOnlyStateHandler.commit(TxRollbackOnlyStateHandler.java:84)
[3/26/12 12:08:43:896 EDT] 0000001f SystemErr R at com.atomikos.icatch.imp.CompositeTransactionImp.doCommit(CompositeTransactionImp.java:319)
[3/26/12 12:08:43:896 EDT] 0000001f SystemErr R at com.atomikos.icatch.imp.CompositeTerminatorImp.commit(CompositeTerminatorImp.java:79)
[3/26/12 12:08:43:896 EDT] 0000001f SystemErr R at com.atomikos.icatch.jta.TransactionImp.commit(TransactionImp.java:236)
[3/26/12 12:08:43:896 EDT] 0000001f SystemErr R ... 24 more
我沒有設置交易僅在代碼中回滾。我想它的默認設置。我想改變它，而不是把它設置爲rollbackOnly。另外，我在事務之後明確地調用了commit（）。爲什麼我仍然得到這個異常？我如何確保交易得到承諾？