why dont you check the v$transaction to see whether it is rolling back
or i mean it is still active.
Sometimes if a process is doing lots of reads on the database and causing lots of cpu spike it would be better you kill the process from the database first and then from the side unix also,we had
the files are stored in oem_webstage directory
you will have to copy these files to the other location and give the path.
As you must be knowing the oem reporting server should have the management server running on the same machine.
when you remove default reporting from the console it doesnt