Database Console 
In the Tools user menu, you can find, among other things, a display of the information for runtime analysis of database instance bottlenecks detected when using the database tool XCONS (database console).
More information: XCONS documentation
Procedure
Open the Database Assistant (transaction code DB50) or the liveCache Assistant (transaction code LC10). Choose
Tools 
Database Console/Console 
. For the liveCache, you also have the option of going directly to the Console from the initial screen of theliveCache Assistant.or
Open the DBA Cockpit (transaction DBACOCKPIT) and select
Tools Database Console .Select the required command. There are commands available for obtaining information from a wide range of different areas, for example, disk accesses, process analysis or memory management.
Choose
Database Console Execute Command .
Result
The required information is retrieved from the database console and immediately displayed on the screen. You can save the results as a local file.
SYSMON Tables
If the database instance is in the operational state ONLINE, you can display the SYSMON tables. To do so, choose Goto SYSMON Table Display .
Example
Displaying information about critical sections:
To do this, choose Goto SYSMON Table Display . Enter table name SYSMON_REGION.