PRTG Manual: Mentions
Recommendations
▪Name the profiles in PRTG Database Observer as the device in PRTG. This will allow you to simplify the deployment of sensors.
▪Do not edit the native/default queries in PRTG Database Observer, which are provided by us. If you want to edit them (for example to change limits), clone them into a separate query.
▪The PRTG Custom sensor does not support more than 50 channels officially. Paessler recommends a maximum number of 40 channels per sensor. Although it is possible to have more channels in a sensor, it generally makes the sensor less sensitive.
▪Paessler recommends as of Windows 2016 on the monitoring system for this kind of sensor.
Limitations
▪The PRTG Custom Sensor Channel can only use values which are numeric (integers or floats). To display text values, you must use lookup tables which can be configured within the query channel_settings directly.
▪The executable file (PRTG_DB_Plugin.exe) must be stored on the system of the probe the sensor is created on. If used on a remote probe, the file must be stored on the system running the remote probe. In a cluster setup, please install PRTG Database Observer on every cluster node.
