Oracle supported metrics

Hardware metrics:

Metrics	Description
Type of OS	Type of OS on which DB is running (Linux/Windows etc.)
Architecture	Architecture of the OS
Host Name	Configured host name on which DB is present
Availability	Active/Inactive [ Availability of the DB ]
Average CPU Usage	Average CPU usage of the machine
Average Memory Usage	Average memory usage of the machine
Disk Usage	Disk usage on the configured host
CPU Usage	CPU usage on the configured host
Network I/O disk usage	I/O megabytes per second
Network I/O disk request	I/O requests per second

Query Performance:

Metrics	Description
Query	List of slow queries performed/available
Total Execution	Count of executions of each slow queries performed/available
Execution Time	Total execution time of each collected query
Timestamp	Last timestamp of each collected query

Connections:

Metrics	Description
Number of connections	Number of connections made for the database
Number of sessions	Number of session established for the database
Session details	User/Query list for established session

Metrics:

Metrics	Description
Host CPU utilization	Host CPU utilization (percentage)
Disk read per second	Amount of file read time.
Disk write per second	Amount of file write time.
Number if long running queries	Number of long running (> 60s) queries.
User Transaction	User transaction per second
Number of redo log file switch	Number of redo log file switch events
Number of redo log file waits	Number of redo log waits.
Hit ratio for the SGA	Hit ratio for the SGA
SGA cacheable memory per statement	SGA cacheable memory per statement
SGA cacheable memory per user	SGA cacheable memory per user

note

Disk usage shows in GB and other metrics will be available in MB.