Note the functionalities of various background processes: 1:Perform recovery at instance startup. SMON 2:Free the resources used by a user process when it fails. PMON 3:Cleanup the database buffer cache when a process fails. PMON 4:Dynamically register database services with listeners. PMON 5:Monitor sessions for idle session timeout. PMON 6:Cleanup unused temporary segments. SMON 7:Record the checkpoint information in control file. CKPT Which option has the correct functionalities listed for a background process()
A. Checkpoint (CKPT): 1, 2, 5
B. System Monitor (SMON): 1, 6
C. Process Monitor (PMON): 4, 6, 7
Database Writer (DBWR): 1, 3, 4