I have tried to change the Client heap memory as mentioned in APPMON documentation. But is not getting changed it always keep the default memory (512 M).
May I doing it in correct way Or I have missing something?
After restarting the client again it is assigning the default value.
You can try reinstall client to be sure that permissions are right. You can try as well portable client to check if that one will properly save settings. Those settings should be stored on your user directory in hidden .Dynatrace folder