AVEVA™ PI System™ Feedback Portal

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We created this site to hear your enhancement ideas, suggestions and feedback about AVEVA products and services. All of the feedback you share here is monitored and reviewed by the AVEVA product managers.

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Status Completed
Product AVEVA™ PI System Access (PSA)
Categories PI OPC DA & HDA Servers
Created by Guest
Created on Aug 23, 2022

RELATED IDEAS

OPC DA Server should periodically update its cache from the PI Server after the initial start

The OPC DA Server service uses %PIPC%\PI_OPCDA2\Data\SavedNamespace.xml to load the tags and does not update the  cache until  the service is stopped and started again. If any new tag is added to the PI Server, it is not picked by the OPC DA Server. The service should periodically update its cache from the PI Server after the initial start.
  • ADMIN RESPONSE
    Aug 23, 2022
    This functionality has been implemented in the PI OPC DA Server and is available in the current version.
  • Attach files
  • Guest
    Reply
    |     Aug 23, 2022
    The problem we are currently trying to solve has to do with changes made while the PI OPC DA Server is down. We find out about new PI points when we restart but we miss PI point edits and deletions. In PI OPC DA Server 2018, we will start validating the cached namespace against the PI Data Archive as a low-priority task after startup. I am wondering how periodic writes to a namespace cache file while running would be helpful.
  • Navaneethakrishnan
    Reply
    |     Aug 23, 2022
    We also faced the same issue recently. We removed the content from SavedNamespace to resolve it. However, we should have some configuration like "Disconnected Startup" where we can specify the frequency of time to sync the tag list to the SavedNamespace cache file. It should handle add/modify/deletion of PI Server tags.
  • Navaneethakrishnan
    Reply
    |     Aug 23, 2022
    Thanks Kevin Geneva for the update. May I know the version in which it is fixed? And how it will work?
  • LGaudreault
    Reply
    |     Aug 23, 2022
    Thanks Kevin, i have downloaded the last version but it has the same file size and the same version 2.3.4.33292. How could we have this new corrected version?
  • Guest
    Reply
    |     Aug 23, 2022
    Sorry for the delay in responding, I did not see these comments until today. This work was completed with PI OPC DA Server 2018 Patch 1. This functionality should also be included as a part of the current version, which as of today is PI OPC DA Server 2018 Patch 2. The service signs up for updates from the PI Server, so new tags should be available in near real-time.