The Instana agent detects new or stopped processes as 'changes', so if the db2sysc process started running it will cause an 'online' change, and if it's stopped it will cause an 'offline' change.
Likely you can incorporate an 'event' widget in your custom dashboard that will show these 'changes'...
------------------------------
Bart Bogaerts
Client Engineering - Technology Engineer
IBM Belgium
Brussels
------------------------------