A shortdump occurs when a program crashes in SAP. The reasons can be several:
Internal SAP system error
Program called with bad/wrong parameters
Connection killed during program execution
Wrong/missing authorizations
How to investigate
When a shortdump associated to the Pro.Monitor user is discovered in the system, it is because of a remote function call which ended badly.
To resolve the problem, you need to identify what Function Module or what Report was executed.
For that, you need to correlate timestamps of the shortdump with what was executed at this exact same moment in Pro.Monitor, to discover which monitor is the responsible.
The best way to do that is by checking the logs.
Only one monitor at a time is executed on a system. If a shortdump occurred at 2h 42m 25s, check which monitor was executed in last just before this time.
Usually, you should see an exception in the logs giving more info about the reason.
In many cases, the monitor can also simply time out and get killed, forcing the connection to close.
How to fix
Shortdump caused by a crash in a monitor
Authorization issue: you will need to update the authorization profile of the Pro.Monitor user.
Wrong parameter: check the monitor configuration to see if it can be fixed there.
Bug: Sometimes the way Pro.Monitor calls Function Module is not appropriate on some versions of SAP, and need to be fixed by a patch.