Oracle ADDM monitoring on AWS

OEM 12c is the away to go for monitoring ADDM metric (DB diagnostic for ADDM).  You can test drive OEM 12c running on AWS EC2 here:

http://cloudconclave.blogspot.com/2013/04/oracle-enterprise-manager-cloud-control.html

You can also monitor EC2, RDS and EBS volumes when running Oracle on AWS using the OEM 12c plug-in for AWS:

http://cloudconclave.blogspot.com/2012/12/oracle-enterprise-manager-aws-plug-in.html