事务出错：You cannot rollback during a managed transacti

应用服务器：jboss-4.0.0
数据库：oracle10g
通过配置应用服务器数据连接池，lookup 获得数据源，
conn = dm.getConnection();
conn.setAutoCommit(false); //禁止自动提交事务
在conn.setAutoCommit(false);的时候就出现了这个异常。14:07:33,625 INFO  [STDOUT] java.sql.SQLException: You cannot rollback during a managed transaction!
14:07:33,625 INFO  [STDOUT]  at org.jboss.resource.adapter.jdbc.BaseWrapperManagedConnection.jdbcRollback(BaseWrapperManagedConnection.java:511)
14:07:33,625 INFO  [STDOUT]  at org.jboss.resource.adapter.jdbc.WrappedConnection.rollback(WrappedConnection.java:460)
14:07:33,625 INFO  [STDOUT]  at cn.com.iaspec.cr110.crinquest.dao.impl.CrInquestDaoImpl.insertBiluTemplet(CrInquestDaoImpl.java:546)
14:07:33,625 INFO  [STDOUT]  at cn.com.iaspec.cr110.crinquest.action.CrInquestEJBAction.perform(CrInquestEJBAction.java:72)
14:07:33,640 INFO  [STDOUT]  at cn.com.iaspec.base.BaseEJBActionSupport.perform(BaseEJBActionSupport.java:12)
14:07:33,640 INFO  [STDOUT]  at cn.com.iaspec.waf.controller.ejb.StateMachine.processEvent(StateMachine.java:103)
14:07:33,640 INFO  [STDOUT]  at cn.com.iaspec.waf.controller.ejb.EJBControllerLocalEJB.processEvent(EJBControllerLocalEJB.java:68)
14:07:33,640 INFO  [STDOUT]  at sun.reflect.GeneratedMethodAccessor63.invoke(Unknown Source)
14:07:33,640 INFO  [STDOUT]  at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
14:07:33,640 INFO  [STDOUT]  at java.lang.reflect.Method.invoke(Method.java:585)
14:07:33,640 INFO  [STDOUT]  at org.jboss.invocation.Invocation.performCall(Invocation.java:345)
14:07:33,640 INFO  [STDOUT]  at org.jboss.ejb.StatelessSessionContainer$ContainerInterceptor.invoke(StatelessSessionContainer.java:214)
14:07:33,640 INFO  [STDOUT]  at org.jboss.resource.connectionmanager.CachedConnectionInterceptor.invoke(CachedConnectionInterceptor.java:185)
14:07:33,640 INFO  [STDOUT]  at org.jboss.ejb.plugins.StatelessSessionInstanceInterceptor.invoke(StatelessSessionInstanceInterceptor.java:113)
14:07:33,656 INFO  [STDOUT]  at org.jboss.webservice.server.ServiceEndpointInterceptor.invoke(ServiceEndpointInterceptor.java:51)
14:07:33,656 INFO  [STDOUT]  at org.jboss.ejb.plugins.CallValidationInterceptor.invoke(CallValidationInterceptor.java:48)
14:07:33,656 INFO  [STDOUT]  at org.jboss.ejb.plugins.AbstractTxInterceptor.invokeNext(AbstractTxInterceptor.java:105)
14:07:33,656 INFO  [STDOUT]  at org.jboss.ejb.plugins.TxInterceptorCMT.runWithTransactions(TxInterceptorCMT.java:316)
14:07:33,656 INFO  [STDOUT]  at org.jboss.ejb.plugins.TxInterceptorCMT.invoke(TxInterceptorCMT.java:149)
14:07:33,656 INFO  [STDOUT]  at org.jboss.ejb.plugins.SecurityInterceptor.invoke(SecurityInterceptor.java:128)
14:07:33,656 INFO  [STDOUT]  at org.jboss.ejb.plugins.LogInterceptor.invoke(LogInterceptor.java:191)
14:07:33,656 INFO  [STDOUT]  at org.jboss.ejb.plugins.ProxyFactoryFinderInterceptor.invoke(ProxyFactoryFinderInterceptor.java:122)
14:07:33,656 INFO  [STDOUT]  at org.jboss.ejb.SessionContainer.internalInvoke(SessionContainer.java:624)
14:07:33,656 INFO  [STDOUT]  at org.jboss.ejb.Container.invoke(Container.java:854)
14:07:33,656 INFO  [STDOUT]  at org.jboss.ejb.plugins.local.BaseLocalProxyFactory.invoke(BaseLocalProxyFactory.java:413)
14:07:33,656 INFO  [STDOUT]  at org.jboss.ejb.plugins.local.StatelessSessionProxy.invoke(StatelessSessionProxy.java:82)
14:07:33,656 INFO  [STDOUT]  at $Proxy42.processEvent(Unknown Source)
14:07:33,656 INFO  [STDOUT]  at cn.com.iaspec.waf.controller.web.DefaultWebController.handleEvent(DefaultWebController.java:92)
14:07:33,656 INFO  [STDOUT]  at cn.com.iaspec.waf.controller.web.RequestProcessor.processRequest(RequestProcessor.java:151)
14:07:33,671 INFO  [STDOUT]  at cn.com.iaspec.waf.controller.web.MainServlet.doProcess(MainServlet.java:109)
14:07:33,671 INFO  [STDOUT]  at cn.com.iaspec.waf.controller.web.MainServlet.doPost(MainServlet.java:98)
14:07:33,671 INFO  [STDOUT]  at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
14:07:33,671 INFO  [STDOUT]  at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
14:07:33,671 INFO  [STDOUT]  at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237)
14:07:33,671 INFO  [STDOUT]  at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
14:07:33,671 INFO  [STDOUT]  at cn.com.iaspec.systemmanage.Filter.LoginFilter.doFilter(LoginFilter.java:51)
14:07:33,671 INFO  [STDOUT]  at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:186)
14:07:33,671 INFO  [STDOUT]  at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
14:07:33,671 INFO  [STDOUT]  at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:75)
14:07:33,671 INFO  [STDOUT]  at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:186)
14:07:33,671 INFO  [STDOUT]  at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
14:07:33,671 INFO  [STDOUT]  at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214)
14:07:33,671 INFO  [STDOUT]  at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
14:07:33,671 INFO  [STDOUT]  at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
14:07:33,687 INFO  [STDOUT]  at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:198)
14:07:33,687 INFO  [STDOUT]  at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:152)
14:07:33,687 INFO  [STDOUT]  at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
14:07:33,687 INFO  [STDOUT]  at org.jboss.web.tomcat.security.CustomPrincipalValve.invoke(CustomPrincipalValve.java:44)
14:07:33,687 INFO  [STDOUT]  at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
14:07:33,687 INFO  [STDOUT]  at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:169)
14:07:33,687 INFO  [STDOUT]  at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
14:07:33,687 INFO  [STDOUT]  at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
14:07:33,687 INFO  [STDOUT]  at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137)
14:07:33,687 INFO  [STDOUT]  at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
14:07:33,703 INFO  [STDOUT]  at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:118)
14:07:33,703 INFO  [STDOUT]  at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
14:07:33,703 INFO  [STDOUT]  at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
14:07:33,703 INFO  [STDOUT]  at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
14:07:33,703 INFO  [STDOUT]  at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
14:07:33,703 INFO  [STDOUT]  at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
14:07:33,703 INFO  [STDOUT]  at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929)
14:07:33,703 INFO  [STDOUT]  at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160)
14:07:33,703 INFO  [STDOUT]  at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799)
14:07:33,703 INFO  [STDOUT]  at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:705)
14:07:33,703 INFO  [STDOUT]  at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577)
14:07:33,703 INFO  [STDOUT]  at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683)
14:07:33,703 INFO  [STDOUT]  at java.lang.Thread.run(Thread.java:595)