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Intermittent connectivity issue with OPC UA server
October 13, 2017
16:19, EEST
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bijesh.r@tcs.com
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June 21, 2017
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Hi All,
While connecting to the Kepware UA server(evaluation version) we are getting following error intermittently thrown by Prosys client. After 2-3 attempts this gets resolved. Can someone please give us some idea possible reason for this
com.prosysopc.ua.SessionActivationException: Failed to activate Session. ServiceResult=Bad_SessionIdInvalid (0x80250000) “The session id is not valid.”
at com.prosysopc.ua.client.UaClient.r(Unknown Source)
at com.prosysopc.ua.client.UaClient.connect(Unknown Source)
Caused by: ServiceFault: Bad_SessionIdInvalid (0x80250000) “The session id is not valid.”
Diagnostic Info:
at org.opcfoundation.ua.transport.impl.AsyncResultImpl.waitForResult(Unknown Source)
at org.opcfoundation.ua.transport.tcp.io.SecureChannelTcp.serviceRequest(Unknown Source)
at org.opcfoundation.ua.transport.tcp.io.SecureChannelTcp.serviceRequest(Unknown Source)
at org.opcfoundation.ua.application.SessionChannel.serviceRequest(Unknown Source)
at org.opcfoundation.ua.transport.ChannelService.ActivateSession(Unknown Source)
at org.opcfoundation.ua.application.SessionChannel.activate(Unknown Source)
… 23 more

Regards
Bijesh

October 13, 2017
16:48, EEST
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Jouni Aro
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Sounds like the connection takes too long for some reason so that the session times out between CreateSession and ActivateSession. Or then it is some other server specific error. I suggest you contact Kepware about the issue and how to solve it.

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