Which two statements are true about the PMON background process? (Choose two.)

A. It registers database services with all local and remote listeners known to the database instance

B. It frees resources held by abnormally terminated processes

C. It records checkpoint information in the control file

D. It frees unused temporary segments

E. It kills sessions that exceed idle time

Correct Answer: B,E

Reference:
https://docs.oracle.com/cd/B19306_01/server.102/b14220/process.htm
* Performs 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 timeout