Java Heap Size Issue

pturmel · June 1, 2018, 11:58pm

??? What are you referring to? OS-level disk operations?

1jeffwill11 · June 2, 2018, 12:04am

No. I am referring to the OPC server connection settings on the gateway.

pturmel · June 2, 2018, 12:10am

I’ve never played with that setting. It doesn’t strike me as a good idea, though.

1jeffwill11 · June 2, 2018, 12:13am

That is the only way I can get Ignition to communicate with the OPC server. If I try to leave that setting on, the connection is faulted.

The difference between synchronous and asynchronous is that asynchronous is bi-directional, and synchronous is one way, correct?

pturmel · June 2, 2018, 12:16am

No, synchronous means each request blocks until the reply/acknowledgement is given by the recipient. Asynchronous allows the calling code to do other things while the request/reply is in flight. It has nothing to do with read-only vs. read-write.

1jeffwill11 · June 2, 2018, 12:24am

Hmmmm… well my connection is no longer faulting, but it is throwing these errors and failing to read tags.

INFO   | jvm 1    | 2018/06/01 17:18:19 | I [O.DAServer[AIM]               ] [00:18:19]: Server 'AIM' state set to [CONNECTING] 
INFO   | jvm 1    | 2018/06/01 17:18:19 | I [O.DAServer[AIM]               ] [00:18:19]: Attempting to connect COM server 'AIM' 
INFO   | jvm 1    | 2018/06/01 17:18:19 | W [O.DAServer[AIM]               ] [00:18:19]: Unable to advise server shutdown hook. Server may not support this functionality. 
INFO   | jvm 1    | 2018/06/01 17:18:19 | com.jniwrapper.win32.com.ComException: COM object method returns error code: 0x80040202; CONNECT_E_ADVISELIMIT
INFO   | jvm 1    | 2018/06/01 17:18:19 | 	at com.jniwrapper.win32.com.impl.IUnknownImpl.invokeStandardVirtualMethod(SourceFile:762)
INFO   | jvm 1    | 2018/06/01 17:18:19 | 	at com.jniwrapper.win32.com.impl.IUnknownImpl.invokeStandardVirtualMethod(SourceFile:741)
INFO   | jvm 1    | 2018/06/01 17:18:19 | 	at com.jniwrapper.win32.ole.impl.IConnectionPointImpl.advise(SourceFile:93)
INFO   | jvm 1    | 2018/06/01 17:18:19 | 	at com.inductiveautomation.opccom.wrapper.shutdown.ServerShutdownDispatcher.advise(ServerShutdownDispatcher.java:51)
INFO   | jvm 1    | 2018/06/01 17:18:19 | 	at com.inductiveautomation.opccom.COMServerImpl$ConnectServerJob.internalRun(COMServerImpl.java:687)
INFO   | jvm 1    | 2018/06/01 17:18:19 | 	at com.inductiveautomation.opccom.wrapper.OleJob.run(OleJob.java:48)
INFO   | jvm 1    | 2018/06/01 17:18:19 | 	at com.jniwrapper.win32.MessageLoopThread$ThreadSynchronizedAction.run(MessageLoopThread.java:620)
INFO   | jvm 1    | 2018/06/01 17:18:19 | 	at com.jniwrapper.win32.MessageLoopThread$LoopThread.run(MessageLoopThread.java:562)
INFO   | jvm 1    | 2018/06/01 17:18:19 | E [c.i.o.w.s.COMSubscription     ] [00:18:19]: Error advising subscription callback. DCOM security settings are likely preventing the OPC server from connecting to the client for callbacks. 
INFO   | jvm 1    | 2018/06/01 17:18:19 | com.jniwrapper.win32.com.ComException: COM object method returns error code: 0x80040202; CONNECT_E_ADVISELIMIT
INFO   | jvm 1    | 2018/06/01 17:18:19 | 	at com.jniwrapper.win32.com.impl.IUnknownImpl.invokeStandardVirtualMethod(SourceFile:762)
INFO   | jvm 1    | 2018/06/01 17:18:19 | 	at com.jniwrapper.win32.com.impl.IUnknownImpl.invokeStandardVirtualMethod(SourceFile:741)
INFO   | jvm 1    | 2018/06/01 17:18:19 | 	at com.jniwrapper.win32.ole.impl.IConnectionPointImpl.advise(SourceFile:93)
INFO   | jvm 1    | 2018/06/01 17:18:19 | 	at com.inductiveautomation.opccom.wrapper.subscriptions.DataChangeDispatcher.advise(DataChangeDispatcher.java:83)
INFO   | jvm 1    | 2018/06/01 17:18:19 | 	at com.inductiveautomation.opccom.wrapper.subscriptions.COMSubscription.oleloop_updateGroup(COMSubscription.java:775)
INFO   | jvm 1    | 2018/06/01 17:18:19 | 	at com.inductiveautomation.opccom.wrapper.subscriptions.COMSubscription$Connector.internalRun(COMSubscription.java:823)
INFO   | jvm 1    | 2018/06/01 17:18:19 | 	at com.inductiveautomation.opccom.wrapper.OleJob.run(OleJob.java:48)
INFO   | jvm 1    | 2018/06/01 17:18:19 | 	at com.jniwrapper.win32.MessageLoopThread$ThreadSynchronizedAction.run(MessageLoopThread.java:620)
INFO   | jvm 1    | 2018/06/01 17:18:19 | 	at com.jniwrapper.win32.MessageLoopThread$LoopThread.run(MessageLoopThread.java:562)
INFO   | jvm 1    | 2018/06/01 17:18:19 | W [c.i.o.w.b.BrowseFactory       ] [00:18:19]: Server does not appear to support DA 3. Subscription name: '_READWRITESUB_' 
INFO   | jvm 1    | 2018/06/01 17:18:19 | com.jniwrapper.win32.com.ComException: COM object method returns error code: 0x80004002; E_NOINTERFACE (No such interface supported)
INFO   | jvm 1    | 2018/06/01 17:18:19 | 	at com.jniwrapper.win32.com.impl.IUnknownImpl.invokeStandardVirtualMethod(SourceFile:762)
INFO   | jvm 1    | 2018/06/01 17:18:19 | 	at com.jniwrapper.win32.com.impl.IUnknownImpl.invokeStandardVirtualMethod(SourceFile:741)
INFO   | jvm 1    | 2018/06/01 17:18:19 | 	at com.jniwrapper.win32.com.impl.IUnknownImpl.invokeStandardVirtualMethod(SourceFile:788)
INFO   | jvm 1    | 2018/06/01 17:18:19 | 	at com.jniwrapper.win32.com.impl.IUnknownImpl.queryInterface(SourceFile:572)
INFO   | jvm 1    | 2018/06/01 17:18:19 | 	at com.jniwrapper.win32.com.impl.IUnknownImpl.<init>(SourceFile:69)
INFO   | jvm 1    | 2018/06/01 17:18:19 | 	at com.inductiveautomation.opccom.interop.opcda.impl.IOPCGroupStateMgtImpl.<init>(IOPCGroupStateMgtImpl.java:35)
INFO   | jvm 1    | 2018/06/01 17:18:19 | 	at com.inductiveautomation.opccom.interop.opcda.impl.IOPCGroupStateMgt2Impl.<init>(IOPCGroupStateMgt2Impl.java:31)
INFO   | jvm 1    | 2018/06/01 17:18:19 | 	at com.inductiveautomation.opccom.wrapper.subscriptions.COMSubscription$UpdateKeepaliveJob.internalRun(COMSubscription.java:841)
INFO   | jvm 1    | 2018/06/01 17:18:19 | 	at com.inductiveautomation.opccom.wrapper.OleJob.run(OleJob.java:48)
INFO   | jvm 1    | 2018/06/01 17:18:19 | 	at com.jniwrapper.win32.MessageLoopThread$ThreadSynchronizedAction.run(MessageLoopThread.java:620)
INFO   | jvm 1    | 2018/06/01 17:18:19 | 	at com.jniwrapper.win32.MessageLoopThread$LoopThread.run(MessageLoopThread.java:562)
INFO   | jvm 1    | 2018/06/01 17:18:19 | I [O.DAServer[AIM]               ] [00:18:19]: Server 'AIM' state set to [CONNECTED] 
INFO   | jvm 1    | 2018/06/01 17:18:20 | E [c.i.o.w.s.COMSubscription     ] [00:18:20]: Error executing read against OPC-COM items. scanclass=default historical, tag-provider=FMCS_EHS
INFO   | jvm 1    | 2018/06/01 17:18:20 | com.jniwrapper.win32.com.ComException: COM object method returns error code: 0x80040200; PERPROP_E_NOPAGEAVAILABLE
INFO   | jvm 1    | 2018/06/01 17:18:20 | 	at com.jniwrapper.win32.com.impl.IUnknownImpl.invokeStandardVirtualMethod(SourceFile:762)
INFO   | jvm 1    | 2018/06/01 17:18:20 | 	at com.jniwrapper.win32.com.impl.IUnknownImpl.invokeStandardVirtualMethod(SourceFile:741)
INFO   | jvm 1    | 2018/06/01 17:18:20 | 	at com.inductiveautomation.opccom.interop.opcda.impl.IOPCAsyncIO2Impl.read(IOPCAsyncIO2Impl.java:48)
INFO   | jvm 1    | 2018/06/01 17:18:20 | 	at com.inductiveautomation.opccom.wrapper.subscriptions.COMSubscription$AsyncReadJob.oleloop_startRead(COMSubscription.java:1222)
INFO   | jvm 1    | 2018/06/01 17:18:20 | 	at com.inductiveautomation.opccom.wrapper.subscriptions.COMSubscription$ReadJob.internalRun(COMSubscription.java:1074)
INFO   | jvm 1    | 2018/06/01 17:18:20 | 	at com.inductiveautomation.opccom.wrapper.OleJob.run(OleJob.java:48)
INFO   | jvm 1    | 2018/06/01 17:18:20 | 	at com.jniwrapper.win32.MessageLoopThread$ThreadSynchronizedAction.run(MessageLoopThread.java:620)
INFO   | jvm 1    | 2018/06/01 17:18:20 | 	at com.jniwrapper.win32.MessageLoopThread$LoopThread.run(MessageLoopThread.java:562)
INFO   | jvm 1    | 2018/06/01 17:18:20 | W [c.i.o.w.s.COMSubscription     ] [00:18:20]: The COM subscription appears to have been disconnected, or is otherwise invalid. The server will attempt to re-establish the subscription. scanclass=default historical, tag-provider=FMCS_EHS
INFO   | jvm 1    | 2018/06/01 17:18:20 | I [c.i.o.w.s.COMSubscription     ] [00:18:20]: Shutting down subscription '_READWRITESUB_'. Is healthy shutdown: false scanclass=default historical, tag-provider=FMCS_EHS