I have come today that maxCount limitation in PI WebAPI call is 150000. I went to check tuning parameter in my PI Data Archive and to my surprise found one parameter maxArcCollect which is also same number 150000 as value .
That raised some doubts for me:
- What is significance of this maxArcCollect ? How it affects querying archived data of tags in PI WebAPI calls?
- How processbook or PI datalink is fetching data of the same tag of last month period which has 238543 events?
- What will be impact on PI Data Archive, if I increased that number of maxArcCollect to 2000000?
- If I query tag which has 2000000 archived value after increasing number of maxArcCollect, how will it affects resources (example, RAM, CPU usage) on my machine?
Note: This case is useful only for bulk read using stream calls of PI Web API
Message was edited by: Paurav Joshi