Describe the PMON,”Process Monitor ProcessPerforms process recovery when a user process fails- Cleans up the database buffer cache- Frees resources that are used by the user process• Monitors sessions for idle session timeoutcleaning up the database buffer cache and freeing resources that the user process was using. For example, it resets the status of the active transaction table, releases locks, and removes the process ID from the list of active processes.PMON periodically checks the status of dispatcher and server processes, and restarts any that have stopped running (but not any that Oracle Database has terminated intentionally).Like SMON
PMON checks regularly to see whether it is needed; it can be called if another process detects the need for it.”