For capacity planning on existing RedHat servers hosting Oracle Databases, I was asked how to find out the CPU utilization per database.
Thought it would be as simple as
ps -eo pcpu,comm |grep -i oracle_dbname
But I'm not sure if this is the right approach.
Best Answer
All the oracle processes are kicked off by the
oracle
executable, and if you're running multiple databases on a server, all of the processes for each database will show up with just that executable.Adding the
args
option to theps
command will add the database name both for the instance processes (such aspmon
) and server processes (those satisfying user activity) to theps
output to allow grepping.What I don't know is what you'll get is useful, considering
ps
is a snapshot of activity as of a given instant in time, and that seems like a very strange way to do capacity planning.