# Strange error running a relatively long process **URL:** \ **Category:** Classic Servoy\ **Created:** [October 16, 2012, 9:57am UTC](https://forum.servoy.com/t/strange-error-running-a-relatively-long-process/16650 "2012-10-16T09:57:29Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![huber](https://yyz2.discourse-cdn.com/flex010/user_avatar/forum.servoy.com/huber/32/5042_2.png) [@huber](https://forum.servoy.com/u/huber)\ **Post date:** [October 16, 2012, 9:57am UTC](https://forum.servoy.com/t/strange-error-running-a-relatively-long-process/16650/1 "2012-10-16T09:57:29Z")
Hi All I get errrors I can’t interpret when running a relatively long running process (~1 hour). It is reproducable. The relevant part of the code in the method is embedded in a transaction. This is what I get (attached also as screenshot): ```auto 2012-10-15 10:50:43,527 ERROR [multiplexer-reader-16818e17[SSL_NULL_WITH_NULL_NULL: Socket[addr=/,port=49223,localport=1099]]] com.sebster.tunnel.impl.sd - multiplexer failed for client 017fda8e-1bbe-45fd-b93f-a3371f233fa2 java.net.SocketTimeoutException: Read timed out at java.net.SocketInputStream.socketRead0(Native Method) at java.net.SocketInputStream.read(Unknown Source) at com.sun.net.ssl.internal.ssl.InputRecord.readFully(Unknown Source) at com.sun.net.ssl.internal.ssl.InputRecord.read(Unknown Source) at com.sun.net.ssl.internal.ssl.SSLSocketImpl.readRecord(Unknown Source) at com.sun.net.ssl.internal.ssl.SSLSocketImpl.readDataRecord(Unknown Source) at com.sun.net.ssl.internal.ssl.AppInputStream.read(Unknown Source) at com.sun.net.ssl.internal.ssl.AppInputStream.read(Unknown Source) at com.sebster.tunnel.impl.kd.c(kd.java:54) at com.sebster.tunnel.impl.md.run(md.java:10) at java.lang.Thread.run(Unknown Source) 2012-10-15 10:54:30,308 ERROR [TaskExecuter[0]] com.servoy.j2db.dataprocessing.Zb - Error flushing message buffer to client B566B24C-E7CC-4FEE-BA36-5864F8CDC564 java.rmi.ConnectException: Connection refused to host: ; nested exception is: java.net.ConnectException: no multiplexer found for server with id=017fda8e-1bbe-45fd-b93f-a3371f233fa2 at sun.rmi.transport.tcp.TCPEndpoint.newSocket(Unknown Source) at sun.rmi.transport.tcp.TCPChannel.createConnection(Unknown Source) at sun.rmi.transport.tcp.TCPChannel.newConnection(Unknown Source) at sun.rmi.server.UnicastRef.invoke(Unknown Source) at java.rmi.server.RemoteObjectInvocationHandler.invokeRemoteMethod(Unknown Source) at java.rmi.server.RemoteObjectInvocationHandler.invoke(Unknown Source) at $Proxy13.isAlive(Unknown Source) at com.servoy.j2db.dataprocessing.ClientProxy.Zc(ClientProxy.java:131) at com.servoy.j2db.dataprocessing.Zo.run(Zo.java:15) at com.servoy.j2db.util.TaskExecuter.run(TaskExecuter.java:82) at java.lang.Thread.run(Unknown Source) Caused by: java.net.ConnectException: no multiplexer found for server with id=017fda8e-1bbe-45fd-b93f-a3371f233fa2 at com.sebster.tunnel.impl.me.createSocket(me.java:14) at com.servoy.j2db.server.rmi.tunnel.WrappingCompressingRMIClientSocketFactory.createSocket(WrappingCompressingRMIClientSocketFactory.java:28) ... 11 more 2012-10-15 10:54:40,308 ERROR [TaskExecuter[1]] com.servoy.j2db.dataprocessing.Zb - Error flushing message buffer to client B566B24C-E7CC-4FEE-BA36-5864F8CDC564 java.rmi.ConnectException: Connection refused to host: ; nested exception is: java.net.ConnectException: no multiplexer found for server with id=017fda8e-1bbe-45fd-b93f-a3371f233fa2 at sun.rmi.transport.tcp.TCPEndpoint.newSocket(Unknown Source) at sun.rmi.transport.tcp.TCPChannel.createConnection(Unknown Source) at sun.rmi.transport.tcp.TCPChannel.newConnection(Unknown Source) at sun.rmi.server.UnicastRef.invoke(Unknown Source) at java.rmi.server.RemoteObjectInvocationHandler.invokeRemoteMethod(Unknown Source) at java.rmi.server.RemoteObjectInvocationHandler.invoke(Unknown Source) at $Proxy13.isAlive(Unknown Source) at com.servoy.j2db.dataprocessing.ClientProxy.Zc(ClientProxy.java:131) at com.servoy.j2db.dataprocessing.Zo.run(Zo.java:15) at com.servoy.j2db.util.TaskExecuter.run(TaskExecuter.java:82) at java.lang.Thread.run(Unknown Source) Caused by: java.net.ConnectException: no multiplexer found for server with id=017fda8e-1bbe-45fd-b93f-a3371f233fa2 at com.sebster.tunnel.impl.me.createSocket(me.java:14) at com.servoy.j2db.server.rmi.tunnel.WrappingCompressingRMIClientSocketFactory.createSocket(WrappingCompressingRMIClientSocketFactory.java:28) ... 11 more 2012-10-15 10:54:50,308 ERROR [TaskExecuter[0]] com.servoy.j2db.dataprocessing.Zb - Error flushing message buffer to client B566B24C-E7CC-4FEE-BA36-5864F8CDC564 java.rmi.ConnectException: Connection refused to host: ; nested exception is: java.net.ConnectException: no multiplexer found for server with id=017fda8e-1bbe-45fd-b93f-a3371f233fa2 at sun.rmi.transport.tcp.TCPEndpoint.newSocket(Unknown Source) at sun.rmi.transport.tcp.TCPChannel.createConnection(Unknown Source) at sun.rmi.transport.tcp.TCPChannel.newConnection(Unknown Source) at sun.rmi.server.UnicastRef.invoke(Unknown Source) at java.rmi.server.RemoteObjectInvocationHandler.invokeRemoteMethod(Unknown Source) at java.rmi.server.RemoteObjectInvocationHandler.invoke(Unknown Source) at $Proxy13.isAlive(Unknown Source) at com.servoy.j2db.dataprocessing.ClientProxy.Zc(ClientProxy.java:131) at com.servoy.j2db.dataprocessing.Zo.run(Zo.java:15) at com.servoy.j2db.util.TaskExecuter.run(TaskExecuter.java:82) at java.lang.Thread.run(Unknown Source) Caused by: java.net.ConnectException: no multiplexer found for server with id=017fda8e-1bbe-45fd-b93f-a3371f233fa2 at com.sebster.tunnel.impl.me.createSocket(me.java:14) at com.servoy.j2db.server.rmi.tunnel.WrappingCompressingRMIClientSocketFactory.createSocket(WrappingCompressingRMIClientSocketFactory.java:28) ... 11 more ``` Any idea what that means and what that I/O error in the screenshot means? I am stuck as I don’t know what this error messages mean. Regards, Robert ![app error.png](https://canada1.discourse-cdn.com/flex010/uploads/servoy/original/1X/e39fb60031b82185cbbb40843dc49cf03228c28a.png) ![io and other errors.png](https://canada1.discourse-cdn.com/flex010/uploads/servoy/original/2X/4/4498bd1934b96ddbb727c9b77e8850ae26de15b8.png) ---
**Author:** ![rgansevles](https://avatars.discourse-cdn.com/v4/letter/r/3d9bf3/32.png) [@rgansevles](https://forum.servoy.com/u/rgansevles)\ **Post date:** [October 17, 2012, 10:52am UTC](https://forum.servoy.com/t/strange-error-running-a-relatively-long-process/16650/2 "2012-10-17T10:52:29Z")
Robert, The smart client was somehow disconnected from the server and managed to reconnect. Because of the transactions, the client could not just continue with what it was doing, so it needs to restart the solution, that is what the dialog tries to say. Rob ---
**Author:** ![huber](https://yyz2.discourse-cdn.com/flex010/user_avatar/forum.servoy.com/huber/32/5042_2.png) [@huber](https://forum.servoy.com/u/huber)\ **Post date:** [October 18, 2012, 1:46pm UTC](https://forum.servoy.com/t/strange-error-running-a-relatively-long-process/16650/3 "2012-10-18T13:46:19Z")
Hi Rob Thanks for clarifying. This error (up to now) only occurs when executing this long running process. I read in the forum about similar or same failures, but they are quite old. There are suggestions about query validation setting to SELECT 1 or ApplicationServer.pingDelay to a low value, e. g. 50. Are these tips still valid, i. e. should I play with them or are they a thing of the past? Regards, Robert > rgansevles: > Robert, > > The smart client was somehow disconnected from the server and managed to reconnect. > Because of the transactions, the client could not just continue with what it was doing, so it needs to restart the solution, that is what the dialog tries to say. > > Rob