WLTC0017E:Ressourcen Rollback aufgrund von setRollbackOnly() aufgerufen wird, Fehler

Ich habe ein Problem mit einem restful web service Deployment auf WebSphere 7. Jedes mal, wenn ich versuche, auf eine url, die ich bekomme diese Fehlermeldung:

"WLTC0017E: Resources rolled back due to setRollbackOnly() being called".

Bin ich zu Ahnen meine indirekte nachschlagevorgänge als die Ursache des Problems. Ich habe meine look-up code, wie dies

try {
    this.em = (EntityManager) new InitialContext().lookup("java:comp/env/persistence/BACPOnlineAPPPU);
    this.utx = (UserTransaction) new InitialContext().lookup("java:comp/UserTransaction");
    } catch (NamingException ex) {
        throw new RuntimeException(ex);

    }

Abgesehen von dieser, ich habe meine datasource und erfolgreich getestet mit WebSphere. Was ist das böse, das ich falsch mache?

Hier ist mein stack trace:

[10/6/11 10:21:26:888 WAT] 0000001d LocalTranCoor E   WLTC0017E: Resources rolled back due to setRollbackOnly() being called.
[10/6/11 10:21:26:888 WAT] 0000001d webapp        E com.ibm.ws.webcontainer.webapp.WebApp logServletError SRVE0293E: [Servlet Error]-[ServletAdaptor]: java.lang.RuntimeException: javax.transaction.RollbackException
    at com.tavia.service.PersistenceService.commitTx(PersistenceService.java:83)
    at com.tavia.service.GltmMisCodesResource.get(GltmMisCodesResource.java:63)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:60)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:37)
    at java.lang.reflect.Method.invoke(Method.java:611)
    at com.sun.jersey.server.impl.model.method.dispatch.AbstractResourceMethodDispatchProvider$TypeOutInvoker._dispatch(AbstractResourceMethodDispatchProvider.java:149)
    at com.sun.jersey.server.impl.model.method.dispatch.ResourceJavaMethodDispatcher.dispatch(ResourceJavaMethodDispatcher.java:67)
    at com.sun.jersey.server.impl.uri.rules.HttpMethodRule.accept(HttpMethodRule.java:259)
    at com.sun.jersey.server.impl.uri.rules.ResourceClassRule.accept(ResourceClassRule.java:83)
    at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:133)
    at com.sun.jersey.server.impl.uri.rules.RootResourceClassesRule.accept(RootResourceClassesRule.java:71)
    at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:990)
    at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:941)
    at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:932)
    at com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:384)
    at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:451)
    at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:632)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:831)
    at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1657)
    at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:939)
    at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:502)
    at com.ibm.ws.webcontainer.servlet.ServletWrapperImpl.handleRequest(ServletWrapperImpl.java:179)
    at com.ibm.ws.webcontainer.webapp.WebApp.handleRequest(WebApp.java:3935)
    at com.ibm.ws.webcontainer.webapp.WebGroup.handleRequest(WebGroup.java:276)
    at com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:931)
    at com.ibm.ws.webcontainer.WSWebContainer.handleRequest(WSWebContainer.java:1583)
    at com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:186)
    at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:452)
    at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewRequest(HttpInboundLink.java:511)
    at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.processRequest(HttpInboundLink.java:305)
    at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.ready(HttpInboundLink.java:276)
    at com.ibm.ws.tcp.channel.impl.NewConnectionInitialReadCallback.sendToDiscriminators(NewConnectionInitialReadCallback.java:214)
    at com.ibm.ws.tcp.channel.impl.NewConnectionInitialReadCallback.complete(NewConnectionInitialReadCallback.java:113)
    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:138)
    at com.ibm.io.async.ResultHandler.complete(ResultHandler.java:204)
    at com.ibm.io.async.ResultHandler.runEventProcessingLoop(ResultHandler.java:775)
    at com.ibm.io.async.ResultHandler$2.run(ResultHandler.java:905)
    at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1604)
Caused by: javax.transaction.RollbackException
    at com.ibm.tx.jta.TransactionImpl.stage3CommitProcessing(TransactionImpl.java:1224)
    at com.ibm.tx.jta.TransactionImpl.processCommit(TransactionImpl.java:998)
    at com.ibm.tx.jta.TransactionImpl.commit(TransactionImpl.java:919)
    at com.ibm.ws.tx.jta.TranManagerImpl.commit(TranManagerImpl.java:436)
    at com.ibm.tx.jta.TranManagerSet.commit(TranManagerSet.java:161)
    at com.ibm.ws.tx.jta.UserTransactionImpl.commit(UserTransactionImpl.java:293)
    at com.tavia.service.PersistenceService.commitTx(PersistenceService.java:81)
    ... 41 more