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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.

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Santosh Koirala shared this idea  ·   ·  Flag idea as inappropriate…  ·  Admin →

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  • AdminRay Verhoeff (Product Manager, OSIsoft) commented  ·   ·  Flag as inappropriate

    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.

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