a) who is actually using the Oracle or CA software?
b) what is it being used for?
c) what definitions should be used for quantifying the actual use (Do users matter at all?)
d) if you count usernames/userdata: It cannot say anything about the multiplexing front-end (or outdated /generic usernames, for that matter)
e) Based on only data it is impossible to determine the license requirements. For example it’s impossible to determine if the database is used for Metadata or live data (metadata databases should not need separate licenses)
f) what if the software has not been configured to scan a specific subnet? It’ll never know what’s going on
g) No tool will ever be able to tell if a specific environment is managed by need-to-be-licensed options and management packs…simply because it’s impossible to do that
h) No tool will understand if something’s a failover cluster or standby environment… and most people will forget to scan those environments anyway
i) I can continue forever with this list.

In the end of the day, any software tool is as useful or useless as these 3 combinations: The person who I) created the inventory software II) installed the inventory software, and III) created the reporting screens IV) who interprets the data.

Unfortunately I’ve found no tool so far that can replace common sense in the server enviroment.

DH
http://www.licenseconsulting.eu