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PRTG Network Monitor

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data differences, historical data with monthly and annually



hi admin I just migrated a PRTG server. From the old PRTG, I copied the database monitoring file to complete the existing data record to copy the new migration server. The strangeness arises when I look at historical data in May complete graphs, but if I choose 30 days or 365 days data, there is data or graphics missing in May, the picture is attached.

please help, thanks

database graph historic-data monitoring-database

Created on Jun 8, 2020 7:27:55 AM

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Accepted Answer



Hi there,

It's possible that the historic data graph cache is not properly calculated. Therefore, please go to "Setup > System Administration > Administrative Tools > Recalculate PRTG Graph Data Cache" and hit the "Go!" button. Afterwards, please wait until the process is finished and check the graphs again.

Created on Jun 8, 2020 9:45:03 AM by  Moritz Heller [Paessler Support]



hi moritz it's work, thanks :)

Created on Jun 9, 2020 4:49:47 AM

Disclaimer: The information in the Paessler Knowledge Base comes without warranty of any kind. Use at your own risk. Before applying any instructions please exercise proper system administrator housekeeping. You must make sure that a proper backup of all your data is available.