Monitoring Oracle Instances on Amazon RDS became supported beginning with the 188.8.131.52 and higher releases of the Oracle cartridge as part of Enhancement Request ODB-11996.
Alert Log data could be collected from Oracle on Amazon RDS beginning with the 184.108.40.206 and higher releases of the Oracle cartridge as part of Enhancement Requests ORAFOG-883 and ORAFOG-869.
The Oracle agent is not able to provide OS data as Amazon RDS does not provide OS data. Tablespace monitoring (free space on RDS) is currently also not available due to limitations to OS monitoring in an RDS environment (Enhancement Request ORAFOG-886).
Please consult KB 256974 or the latest Foglight for Databases deployment guide for permissions requires for AWS RDS Oracle Instance monitoring.