Thread Overview 
The Kernel Threads user menu of the DBA Cockpit contains, among other things, a thread overview.
Procedure
Open the DBA Cockpit (transaction code DBACOCKPIT) and select 
Performance 
Kernel Threads Thread Overview 
.
Result
The system displays an overview of the threads and details for the threads that support database operation.
More Information
Concepts of the Database System, Operating System Functions and Resources Used by Databases