# New connection to DB2 DV

**URL:** <https://forum.cloverdx.com/t/new-connection-to-db2-dv/2039>\
**Category:** CloverDX Platform\
**Created:** [May 13, 2019, 12:00am UTC](https://forum.cloverdx.com/t/new-connection-to-db2-dv/2039 "2019-05-13T00:00:00Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![mayamit](https://avatars.discourse-cdn.com/v4/letter/m/8e7dd6/32.png) [@mayamit](https://forum.cloverdx.com/u/mayamit)\
**Post date:** [May 13, 2019, 12:00am UTC](https://forum.cloverdx.com/t/new-connection-to-db2-dv/2039/1 "2019-05-13T00:00:00Z")

</div>

Hello,

I just created a new connection, trying to connect to DB2 server. I downloaded the appropriate driver from IBM and while trying to “Validate the connection”, I get:  
“Cannot connect to server at [http://localhost:59311/clover](http://localhost:59311/clover)  
Connection to CloverDX Server failed  
Read timed out”

Stack trace as follows:  
"ERROR: ‘’  
May 13, 2019 6:44:05 PM com.sun.xml.ws.transport.http.servlet.WSServletDelegate doGet  
SEVERE: caught throwable  
javax.xml.ws.WebServiceException: javax.xml.bind.MarshalException  
- with linked exception:  
[com.sun.istack.SAXException2: com.sun.istack.SAXException2  
org.eclipse.jetty.io.EofException  
javax.xml.transform.TransformerException: com.sun.istack.SAXException2  
org.eclipse.jetty.io.EofException]  
at com.sun.xml.ws.message.jaxb.JAXBMessage.writePayloadTo(JAXBMessage.java:424)  
at com.sun.xml.ws.message.AbstractMessageImpl.writeTo(AbstractMessageImpl.java:192)  
at com.sun.xml.ws.api.message.FilterMessageImpl.writeTo(FilterMessageImpl.java:168)  
at com.sun.xml.ws.api.message.MessageWrapper.writeTo(MessageWrapper.java:226)  
at com.sun.xml.ws.encoding.MtomCodec.encode(MtomCodec.java:188)  
at com.sun.xml.ws.encoding.SOAPBindingCodec.encode(SOAPBindingCodec.java:242)  
at com.sun.xml.ws.transport.http.HttpAdapter.encodePacket(HttpAdapter.java:636)  
at com.sun.xml.ws.transport.http.HttpAdapter.access$100(HttpAdapter.java:108)  
at com.sun.xml.ws.transport.http.HttpAdapter$HttpToolkit.handle(HttpAdapter.java:878)  
at com.sun.xml.ws.transport.http.HttpAdapter.handle(HttpAdapter.java:422)  
at com.sun.xml.ws.transport.http.servlet.ServletAdapter.invokeAsync(ServletAdapter.java:225)  
at com.sun.xml.ws.transport.http.servlet.WSServletDelegate.doGet(WSServletDelegate.java:161)  
at com.sun.xml.ws.transport.http.servlet.WSServletDelegate.doPost(WSServletDelegate.java:197)  
at com.sun.xml.ws.transport.http.servlet.WSServlet.doPost(WSServlet.java:81)  
at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)  
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)  
at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:865)  
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1655)  
at com.cloveretl.server.filter.GzipInputFilter.doFilter(Main:143)  
at com.cloveretl.server.worker.commons.filter.HttpFilterBase.doFilter(Main:41)  
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1642)  
at com.cloveretl.server.filter.GzipOutputFilter.doFilter(Main:764)  
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1642)  
at com.cloveretl.server.filter.AuthenticationFilter.doFilter(Main:61)  
at com.cloveretl.server.worker.commons.filter.HttpFilterBase.doFilter(Main:41)  
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1642)  
at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99)  
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)  
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1642)  
at com.cloveretl.server.filter.InitCheckFilter.doFilter(Main:54)  
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1642)  
at com.cloveretl.server.filter.ClientTrackingFilter.doFilter(Main:47)  
at com.cloveretl.server.worker.commons.filter.HttpFilterBase.doFilter(Main:41)  
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1634)  
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:533)  
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:146)  
at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:548)  
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132)  
at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:257)  
at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1595)  
at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:255)  
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1340)  
at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:203)  
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:473)  
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1564)  
at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:201)  
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1242)  
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:144)  
at org.eclipse.jetty.server.handler.HandlerList.handle(HandlerList.java:61)  
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132)  
at org.eclipse.jetty.server.Server.handle(Server.java:503)  
at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:364)  
at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:260)  
at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:305)  
at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:103)  
at org.eclipse.jetty.io.ChannelEndPoint$2.run(ChannelEndPoint.java:118)  
at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:333)  
at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:310)  
at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:168)  
at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:126)  
at org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:366)  
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:765)  
at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:683)  
at java.lang.Thread.run(Thread.java:745)  
Caused by: javax.xml.bind.MarshalException  
- with linked exception:  
[com.sun.istack.SAXException2: com.sun.istack.SAXException2  
org.eclipse.jetty.io.EofException  
javax.xml.transform.TransformerException: com.sun.istack.SAXException2  
org.eclipse.jetty.io.EofException]  
at com.sun.xml.bind.v2.runtime.MarshallerImpl.write(MarshallerImpl.java:331)  
at com.sun.xml.bind.v2.runtime.MarshallerImpl.marshal(MarshallerImpl.java:178)  
at com.sun.xml.ws.db.glassfish.MarshallerBridge.marshal(MarshallerBridge.java:86)  
at com.sun.xml.bind.api.Bridge.marshal(Bridge.java:145)  
at com.sun.xml.ws.message.jaxb.JAXBMessage.writePayloadTo(JAXBMessage.java:415)  
… 63 more  
Caused by: com.sun.istack.SAXException2: com.sun.istack.SAXException2  
org.eclipse.jetty.io.EofException  
javax.xml.transform.TransformerException: com.sun.istack.SAXException2  
org.eclipse.jetty.io.EofException  
at com.sun.xml.bind.v2.runtime.XMLSerializer.reportError(XMLSerializer.java:247)  
at com.sun.xml.bind.v2.runtime.XMLSerializer.reportError(XMLSerializer.java:262)  
at com.sun.xml.bind.v2.runtime.XMLSerializer.writeDom(XMLSerializer.java:807)  
at com.sun.xml.bind.v2.runtime.property.ArrayReferenceNodeProperty.serializeListBody(ArrayReferenceNodeProperty.java:116)  
at com.sun.xml.bind.v2.runtime.property.ArrayERProperty.serializeBody(ArrayERProperty.java:159)  
at com.sun.xml.bind.v2.runtime.ClassBeanInfoImpl.serializeBody(ClassBeanInfoImpl.java:360)  
at com.sun.xml.bind.v2.runtime.XMLSerializer.childAsXsiType(XMLSerializer.java:696)  
at com.sun.xml.bind.v2.runtime.property.SingleElementNodeProperty.serializeBody(SingleElementNodeProperty.java:158)  
at com.sun.xml.bind.v2.runtime.ClassBeanInfoImpl.serializeBody(ClassBeanInfoImpl.java:360)  
at com.sun.xml.bind.v2.runtime.XMLSerializer.childAsSoleContent(XMLSerializer.java:593)  
at com.sun.xml.bind.v2.runtime.ClassBeanInfoImpl.serializeRoot(ClassBeanInfoImpl.java:341)  
at com.sun.xml.bind.v2.runtime.XMLSerializer.childAsRoot(XMLSerializer.java:494)  
at com.sun.xml.bind.v2.runtime.MarshallerImpl.write(MarshallerImpl.java:328)  
… 67 more  
Caused by: javax.xml.transform.TransformerException: com.sun.istack.SAXException2  
org.eclipse.jetty.io.EofException  
at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transform(TransformerImpl.java:749)  
at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transform(TransformerImpl.java:351)  
at com.sun.xml.bind.v2.runtime.XMLSerializer.writeDom(XMLSerializer.java:805)  
… 77 more  
Caused by: com.sun.istack.SAXException2  
org.eclipse.jetty.io.EofException  
at com.sun.xml.bind.v2.runtime.XMLSerializer.attribute(XMLSerializer.java:437)  
at com.sun.xml.bind.v2.runtime.ContentHandlerAdaptor.startElement(ContentHandlerAdaptor.java:134)  
at com.sun.org.apache.xml.internal.serializer.ToXMLSAXHandler.closeStartTag(ToXMLSAXHandler.java:208)  
at com.sun.org.apache.xml.internal.serializer.ToSAXHandler.flushPending(ToSAXHandler.java:281)  
at com.sun.org.apache.xml.internal.serializer.ToXMLSAXHandler.endElement(ToXMLSAXHandler.java:247)  
at com.sun.org.apache.xml.internal.serializer.ToXMLSAXHandler.endElement(ToXMLSAXHandler.java:559)  
at com.sun.org.apache.xalan.internal.xsltc.trax.DOM2TO.parse(DOM2TO.java:235)  
at com.sun.org.apache.xalan.internal.xsltc.trax.DOM2TO.parse(DOM2TO.java:230)  
at com.sun.org.apache.xalan.internal.xsltc.trax.DOM2TO.parse(DOM2TO.java:230)  
at com.sun.org.apache.xalan.internal.xsltc.trax.DOM2TO.parse(DOM2TO.java:230)  
at com.sun.org.apache.xalan.internal.xsltc.trax.DOM2TO.parse(DOM2TO.java:230)  
at com.sun.org.apache.xalan.internal.xsltc.trax.DOM2TO.parse(DOM2TO.java:94)  
at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transformIdentity(TransformerImpl.java:693)  
at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transform(TransformerImpl.java:737)  
… 79 more  
Caused by: org.eclipse.jetty.io.EofException  
at org.eclipse.jetty.io.ChannelEndPoint.flush(ChannelEndPoint.java:286)  
at org.eclipse.jetty.io.WriteFlusher.flush(WriteFlusher.java:393)  
at org.eclipse.jetty.io.WriteFlusher.write(WriteFlusher.java:277)  
at org.eclipse.jetty.io.AbstractEndPoint.write(AbstractEndPoint.java:380)  
at org.eclipse.jetty.server.HttpConnection$SendCallback.process(HttpConnection.java:808)  
at org.eclipse.jetty.util.IteratingCallback.processing(IteratingCallback.java:241)  
at org.eclipse.jetty.util.IteratingCallback.iterate(IteratingCallback.java:224)  
at org.eclipse.jetty.server.HttpConnection.send(HttpConnection.java:538)  
at org.eclipse.jetty.server.HttpChannel.sendResponse(HttpChannel.java:836)  
at org.eclipse.jetty.server.HttpChannel.write(HttpChannel.java:887)  
at org.eclipse.jetty.server.HttpOutput.write(HttpOutput.java:239)  
at org.eclipse.jetty.server.HttpOutput.write(HttpOutput.java:215)  
at org.eclipse.jetty.server.HttpOutput.write(HttpOutput.java:514)  
at com.sun.xml.ws.transport.http.servlet.ServletConnectionImpl$1.write(ServletConnectionImpl.java:243)  
at com.sun.xml.bind.v2.runtime.output.UTF8XmlOutput.write(UTF8XmlOutput.java:411)  
at com.sun.xml.bind.v2.runtime.output.Encoded.write(Encoded.java:167)  
at com.sun.xml.bind.v2.runtime.output.UTF8XmlOutput.attribute(UTF8XmlOutput.java:266)  
at com.sun.xml.bind.v2.runtime.output.MTOMXmlOutput.attribute(MTOMXmlOutput.java:101)  
at com.sun.xml.bind.v2.runtime.XMLSerializer.attribute(XMLSerializer.java:435)  
… 92 more  
Caused by: java.io.IOException: Broken pipe  
at sun.nio.ch.FileDispatcherImpl.writev0(Native Method)  
at sun.nio.ch.SocketDispatcher.writev(SocketDispatcher.java:51)  
at sun.nio.ch.IOUtil.write(IOUtil.java:148)  
at sun.nio.ch.SocketChannelImpl.write(SocketChannelImpl.java:504)  
at org.eclipse.jetty.io.ChannelEndPoint.flush(ChannelEndPoint.java:266)  
… 110 more  
"

What could be the error?

---

<div class="post-metadata">

**Author:** ![mayamit](https://avatars.discourse-cdn.com/v4/letter/m/8e7dd6/32.png) [@mayamit](https://forum.cloverdx.com/u/mayamit)\
**Post date:** [May 14, 2019, 3:35pm UTC](https://forum.cloverdx.com/t/new-connection-to-db2-dv/2039/2 "2019-05-14T15:35:49Z")

</div>

> Hello,
> 
> I just created a new connection, trying to connect to DB2 server. I downloaded the appropriate driver from IBM and while trying to “Validate the connection”, I get:  
> “Cannot connect to server at [http://localhost:59311/clover](http://localhost:59311/clover)  
> Connection to CloverDX Server failed  
> Read timed out”
> 
> Stack trace as follows:  
> "ERROR: ‘’  
> May 13, 2019 6:44:05 PM com.sun.xml.ws.transport.http.servlet.WSServletDelegate doGet  
> SEVERE: caught throwable  
> javax.xml.ws.WebServiceException: javax.xml.bind.MarshalException  
> - with linked exception:  
> [com.sun.istack.SAXException2: com.sun.istack.SAXException2  
> org.eclipse.jetty.io.EofException  
> javax.xml.transform.TransformerException: com.sun.istack.SAXException2  
> org.eclipse.jetty.io.EofException]  
> at com.sun.xml.ws.message.jaxb.JAXBMessage.writePayloadTo(JAXBMessage.java:424)  
> at com.sun.xml.ws.message.AbstractMessageImpl.writeTo(AbstractMessageImpl.java:192)  
> at com.sun.xml.ws.api.message.FilterMessageImpl.writeTo(FilterMessageImpl.java:168)  
> at com.sun.xml.ws.api.message.MessageWrapper.writeTo(MessageWrapper.java:226)  
> at com.sun.xml.ws.encoding.MtomCodec.encode(MtomCodec.java:188)  
> at com.sun.xml.ws.encoding.SOAPBindingCodec.encode(SOAPBindingCodec.java:242)  
> at com.sun.xml.ws.transport.http.HttpAdapter.encodePacket(HttpAdapter.java:636)  
> at com.sun.xml.ws.transport.http.HttpAdapter.access$100(HttpAdapter.java:108)  
> at com.sun.xml.ws.transport.http.HttpAdapter$HttpToolkit.handle(HttpAdapter.java:878)  
> at com.sun.xml.ws.transport.http.HttpAdapter.handle(HttpAdapter.java:422)  
> at com.sun.xml.ws.transport.http.servlet.ServletAdapter.invokeAsync(ServletAdapter.java:225)  
> at com.sun.xml.ws.transport.http.servlet.WSServletDelegate.doGet(WSServletDelegate.java:161)  
> at com.sun.xml.ws.transport.http.servlet.WSServletDelegate.doPost(WSServletDelegate.java:197)  
> at com.sun.xml.ws.transport.http.servlet.WSServlet.doPost(WSServlet.java:81)  
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)  
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)  
> at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:865)  
> at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1655)  
> at com.cloveretl.server.filter.GzipInputFilter.doFilter(Main:143)  
> at com.cloveretl.server.worker.commons.filter.HttpFilterBase.doFilter(Main:41)  
> at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1642)  
> at com.cloveretl.server.filter.GzipOutputFilter.doFilter(Main:764)  
> at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1642)  
> at com.cloveretl.server.filter.AuthenticationFilter.doFilter(Main:61)  
> at com.cloveretl.server.worker.commons.filter.HttpFilterBase.doFilter(Main:41)  
> at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1642)  
> at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99)  
> at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)  
> at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1642)  
> at com.cloveretl.server.filter.InitCheckFilter.doFilter(Main:54)  
> at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1642)  
> at com.cloveretl.server.filter.ClientTrackingFilter.doFilter(Main:47)  
> at com.cloveretl.server.worker.commons.filter.HttpFilterBase.doFilter(Main:41)  
> at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1634)  
> at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:533)  
> at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:146)  
> at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:548)  
> at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132)  
> at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:257)  
> at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1595)  
> at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:255)  
> at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1340)  
> at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:203)  
> at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:473)  
> at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1564)  
> at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:201)  
> at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1242)  
> at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:144)  
> at org.eclipse.jetty.server.handler.HandlerList.handle(HandlerList.java:61)  
> at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132)  
> at org.eclipse.jetty.server.Server.handle(Server.java:503)  
> at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:364)  
> at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:260)  
> at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:305)  
> at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:103)  
> at org.eclipse.jetty.io.ChannelEndPoint$2.run(ChannelEndPoint.java:118)  
> at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:333)  
> at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:310)  
> at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:168)  
> at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:126)  
> at org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:366)  
> at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:765)  
> at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:683)  
> at java.lang.Thread.run(Thread.java:745)  
> Caused by: javax.xml.bind.MarshalException  
> - with linked exception:  
> [com.sun.istack.SAXException2: com.sun.istack.SAXException2  
> org.eclipse.jetty.io.EofException  
> javax.xml.transform.TransformerException: com.sun.istack.SAXException2  
> org.eclipse.jetty.io.EofException]  
> at com.sun.xml.bind.v2.runtime.MarshallerImpl.write(MarshallerImpl.java:331)  
> at com.sun.xml.bind.v2.runtime.MarshallerImpl.marshal(MarshallerImpl.java:178)  
> at com.sun.xml.ws.db.glassfish.MarshallerBridge.marshal(MarshallerBridge.java:86)  
> at com.sun.xml.bind.api.Bridge.marshal(Bridge.java:145)  
> at com.sun.xml.ws.message.jaxb.JAXBMessage.writePayloadTo(JAXBMessage.java:415)  
> … 63 more  
> Caused by: com.sun.istack.SAXException2: com.sun.istack.SAXException2  
> org.eclipse.jetty.io.EofException  
> javax.xml.transform.TransformerException: com.sun.istack.SAXException2  
> org.eclipse.jetty.io.EofException  
> at com.sun.xml.bind.v2.runtime.XMLSerializer.reportError(XMLSerializer.java:247)  
> at com.sun.xml.bind.v2.runtime.XMLSerializer.reportError(XMLSerializer.java:262)  
> at com.sun.xml.bind.v2.runtime.XMLSerializer.writeDom(XMLSerializer.java:807)  
> at com.sun.xml.bind.v2.runtime.property.ArrayReferenceNodeProperty.serializeListBody(ArrayReferenceNodeProperty.java:116)  
> at com.sun.xml.bind.v2.runtime.property.ArrayERProperty.serializeBody(ArrayERProperty.java:159)  
> at com.sun.xml.bind.v2.runtime.ClassBeanInfoImpl.serializeBody(ClassBeanInfoImpl.java:360)  
> at com.sun.xml.bind.v2.runtime.XMLSerializer.childAsXsiType(XMLSerializer.java:696)  
> at com.sun.xml.bind.v2.runtime.property.SingleElementNodeProperty.serializeBody(SingleElementNodeProperty.java:158)  
> at com.sun.xml.bind.v2.runtime.ClassBeanInfoImpl.serializeBody(ClassBeanInfoImpl.java:360)  
> at com.sun.xml.bind.v2.runtime.XMLSerializer.childAsSoleContent(XMLSerializer.java:593)  
> at com.sun.xml.bind.v2.runtime.ClassBeanInfoImpl.serializeRoot(ClassBeanInfoImpl.java:341)  
> at com.sun.xml.bind.v2.runtime.XMLSerializer.childAsRoot(XMLSerializer.java:494)  
> at com.sun.xml.bind.v2.runtime.MarshallerImpl.write(MarshallerImpl.java:328)  
> … 67 more  
> Caused by: javax.xml.transform.TransformerException: com.sun.istack.SAXException2  
> org.eclipse.jetty.io.EofException  
> at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transform(TransformerImpl.java:749)  
> at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transform(TransformerImpl.java:351)  
> at com.sun.xml.bind.v2.runtime.XMLSerializer.writeDom(XMLSerializer.java:805)  
> … 77 more  
> Caused by: com.sun.istack.SAXException2  
> org.eclipse.jetty.io.EofException  
> at com.sun.xml.bind.v2.runtime.XMLSerializer.attribute(XMLSerializer.java:437)  
> at com.sun.xml.bind.v2.runtime.ContentHandlerAdaptor.startElement(ContentHandlerAdaptor.java:134)  
> at com.sun.org.apache.xml.internal.serializer.ToXMLSAXHandler.closeStartTag(ToXMLSAXHandler.java:208)  
> at com.sun.org.apache.xml.internal.serializer.ToSAXHandler.flushPending(ToSAXHandler.java:281)  
> at com.sun.org.apache.xml.internal.serializer.ToXMLSAXHandler.endElement(ToXMLSAXHandler.java:247)  
> at com.sun.org.apache.xml.internal.serializer.ToXMLSAXHandler.endElement(ToXMLSAXHandler.java:559)  
> at com.sun.org.apache.xalan.internal.xsltc.trax.DOM2TO.parse(DOM2TO.java:235)  
> at com.sun.org.apache.xalan.internal.xsltc.trax.DOM2TO.parse(DOM2TO.java:230)  
> at com.sun.org.apache.xalan.internal.xsltc.trax.DOM2TO.parse(DOM2TO.java:230)  
> at com.sun.org.apache.xalan.internal.xsltc.trax.DOM2TO.parse(DOM2TO.java:230)  
> at com.sun.org.apache.xalan.internal.xsltc.trax.DOM2TO.parse(DOM2TO.java:230)  
> at com.sun.org.apache.xalan.internal.xsltc.trax.DOM2TO.parse(DOM2TO.java:94)  
> at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transformIdentity(TransformerImpl.java:693)  
> at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transform(TransformerImpl.java:737)  
> … 79 more  
> Caused by: org.eclipse.jetty.io.EofException  
> at org.eclipse.jetty.io.ChannelEndPoint.flush(ChannelEndPoint.java:286)  
> at org.eclipse.jetty.io.WriteFlusher.flush(WriteFlusher.java:393)  
> at org.eclipse.jetty.io.WriteFlusher.write(WriteFlusher.java:277)  
> at org.eclipse.jetty.io.AbstractEndPoint.write(AbstractEndPoint.java:380)  
> at org.eclipse.jetty.server.HttpConnection$SendCallback.process(HttpConnection.java:808)  
> at org.eclipse.jetty.util.IteratingCallback.processing(IteratingCallback.java:241)  
> at org.eclipse.jetty.util.IteratingCallback.iterate(IteratingCallback.java:224)  
> at org.eclipse.jetty.server.HttpConnection.send(HttpConnection.java:538)  
> at org.eclipse.jetty.server.HttpChannel.sendResponse(HttpChannel.java:836)  
> at org.eclipse.jetty.server.HttpChannel.write(HttpChannel.java:887)  
> at org.eclipse.jetty.server.HttpOutput.write(HttpOutput.java:239)  
> at org.eclipse.jetty.server.HttpOutput.write(HttpOutput.java:215)  
> at org.eclipse.jetty.server.HttpOutput.write(HttpOutput.java:514)  
> at com.sun.xml.ws.transport.http.servlet.ServletConnectionImpl$1.write(ServletConnectionImpl.java:243)  
> at com.sun.xml.bind.v2.runtime.output.UTF8XmlOutput.write(UTF8XmlOutput.java:411)  
> at com.sun.xml.bind.v2.runtime.output.Encoded.write(Encoded.java:167)  
> at com.sun.xml.bind.v2.runtime.output.UTF8XmlOutput.attribute(UTF8XmlOutput.java:266)  
> at com.sun.xml.bind.v2.runtime.output.MTOMXmlOutput.attribute(MTOMXmlOutput.java:101)  
> at com.sun.xml.bind.v2.runtime.XMLSerializer.attribute(XMLSerializer.java:435)  
> … 92 more  
> Caused by: java.io.IOException: Broken pipe  
> at sun.nio.ch.FileDispatcherImpl.writev0(Native Method)  
> at sun.nio.ch.SocketDispatcher.writev(SocketDispatcher.java:51)  
> at sun.nio.ch.IOUtil.write(IOUtil.java:148)  
> at sun.nio.ch.SocketChannelImpl.write(SocketChannelImpl.java:504)  
> at org.eclipse.jetty.io.ChannelEndPoint.flush(ChannelEndPoint.java:266)  
> … 110 more  
> "
> 
> What could be the error?
> 
> “mayamit”

---

<div class="post-metadata">

**Author:** ![Vladimir\_Barton](https://yyz1.discourse-cdn.com/flex007/user_avatar/forum.cloverdx.com/vladimir_barton/32/167_2.png) [@Vladimir\_Barton](https://forum.cloverdx.com/u/Vladimir_Barton)\
**Post date:** [June 25, 2019, 2:22pm UTC](https://forum.cloverdx.com/t/new-connection-to-db2-dv/2039/3 "2019-06-25T14:22:25Z")

</div>

Hello Mayamit,  
the error message indicates that the connection failed due to a read timeout. You can try increasing the Request timeout and Connect timeout in the CloverDX Designer by navigating to Window \> Preferences \> CloverDX \> CloverDX Server Integration. The default value is 30 seconds for both timeouts so try increasing them to 300. If this does not help we would have to dig a little bit deeper into your use case so kindly provide me with additional information:

- What is the version of CloverDX Designer that you are using?

- Do you take advantage of the JDK that is bundled with the Designer or do you use a custom one? If the latter is the case, please provide me with the vendor and version of Java.

- Could you provide me with more details about the driver that you downloaded? For instance, name, version, where you downloaded it from, etc.

- Are you able to connect to the DB2 instance by using a 3rd party DB client, for example, Toad, DBeaver, etc. by using the very same driver?

- Just so that we are both on the same page, you got the error message by clicking on the ‘Validate connection’ button in the DB connection configuration in the Designer. Is that correct? Is this a local project that we are dealing with (as opposed to CloverDX Server project)?

- Try disabling your firewall and retry the connection validation. Is the result the same?

Kind regards,