Today I came across view DBA_FEATURE_USAGE_STATISTICS (10g) which let’s us know whether particular Database Feature has been used till now or not. If yes, then it also let’s us know when it was used for the first time and also the last usage time. This can be helpful to check if anyone is using Database feature which is not licensed .
I have used filter DETECTED_USAGES >0 for checking the features which has been used in this Database.
<span style="font-size: x-small; font-family: helvetica;"><span style="font-size: small;">SQL> SELECT NAME,DETECTED_USAGES AS "USAGE",CURRENTLY_USED,FIRST_USAGE_DATE,LAST_USAGE_DATE 2 FROM DBA_FEATURE_USAGE_STATISTICS WHERE DETECTED_USAGES >0 order by 1; NAME USAGE CURRE FIRST_USA LAST_USAG --------------------------------------------- ---------- ----- --------- --------- Automatic SQL Execution Memory 2 TRUE 14-AUG-08 21-AUG-08 Automatic SQL Execution Memory 1 TRUE 13-AUG-08 13-AUG-08 Automatic Segment Space Management (system) 2 TRUE 14-AUG-08 21-AUG-08 Automatic Segment Space Management (system) 1 TRUE 13-AUG-08 13-AUG-08 Automatic Segment Space Management (user) 1 TRUE 13-AUG-08 13-AUG-08 Automatic Storage Manager 2 TRUE 14-AUG-08 21-AUG-08 Automatic Storage Manager 1 TRUE 13-AUG-08 13-AUG-08 Automatic Undo Management 2 TRUE 14-AUG-08 21-AUG-08 Automatic Undo Management 1 TRUE 13-AUG-08 13-AUG-08 Character Set 2 TRUE 14-AUG-08 21-AUG-08 Character Set 1 TRUE 13-AUG-08 13-AUG-08 Dynamic SGA 1 TRUE 13-AUG-08 13-AUG-08 Internode Parallel Execution 2 TRUE 14-AUG-08 21-AUG-08 Locally Managed Tablespaces (system) 1 TRUE 13-AUG-08 13-AUG-08 Locally Managed Tablespaces (system) 2 TRUE 14-AUG-08 21-AUG-08 Locally Managed Tablespaces (user) 1 TRUE 13-AUG-08 13-AUG-08 Locally Managed Tablespaces (user) 2 TRUE 14-AUG-08 21-AUG-08 Parallel SQL Query Execution 2 TRUE 14-AUG-08 21-AUG-08 Partitioning (system) 1 TRUE 13-AUG-08 13-AUG-08 Partitioning (system) 2 TRUE 14-AUG-08 21-AUG-08 Protection Mode - Maximum Performance 1 TRUE 13-AUG-08 13-AUG-08 Protection Mode - Maximum Performance 2 TRUE 14-AUG-08 21-AUG-08 Real Application Clusters (RAC) 2 TRUE 14-AUG-08 21-AUG-08 Real Application Clusters (RAC) 1 TRUE 13-AUG-08 13-AUG-08 Recovery Area 1 TRUE 13-AUG-08 13-AUG-08 Recovery Area 2 TRUE 14-AUG-08 21-AUG-08 Segment Advisor 2 TRUE 14-AUG-08 21-AUG-08 Server Parameter File 2 TRUE 14-AUG-08 21-AUG-08 Server Parameter File 1 TRUE 13-AUG-08 13-AUG-08 Streams (system) 2 TRUE 14-AUG-08 21-AUG-08 Streams (system) 1 TRUE 13-AUG-08 13-AUG-08 Streams (user) 1 TRUE 13-AUG-08 13-AUG-08 Streams (user) 2 TRUE 14-AUG-08 21-AUG-08 Virtual Private Database (VPD) 2 TRUE 14-AUG-08 21-AUG-08 Virtual Private Database (VPD) 1 TRUE 13-AUG-08 13-AUG-08 XDB 2 TRUE 14-AUG-08 21-AUG-08 36 rows selected. </span></span>
So be careful when you use any Licensed feature (Unless you have already bought it) like Partitioning, AWR,Database Replay as this auditing is enabled by default 
Also remember this is included in the rda output when you upload the files to support
Thanks Chris. I was not aware of this . Good point
For others, they can check RDA and click RDBMS and then you will find link “Feature Usage Statistics”. This links to files called RDA_DBA_vfeatureusage.htm and RDA_DBA_vfeatureusage.txt which contain this data.
Hi Amit,
Good work, seems like you continue to contribute to KM in different means..
All the best !
Thanks Theetha..yeah had to find some alternatives
Very valuable information Amit.
I will keep visiting here. Keep the good work. Information presented here is very clear.