PMON / abnormal ended processes

Hi,
as far as I understand now, PMON will clear up the resources of an abnormal ended process, release locks, blocks of the process in the database buffer cache and so on.
I'm trying to understand how Oracle will handle processes that has ended abnormal. Assuming an SQL*Plus do a network connection and starts e.g. a long running update. During this update the terminal of SQL*Plus will be killed. Will SQL*Plus rest in the database and what will happens then? Who will remove the network connection, the process from v$session and so on. These dependencies are not clear to me.
May anyone can give me a short explanation or anyone have a good link where this is explained? I know that this will be a complex issue and can't be explained with a few words, but a short explanation could help to find the right hooks to get a deeper understanding.
Thank you in advance!
Best regards,
Alex

Hi,
pgoel wrote:
Hi, I think it is the same PMON who periodically cleans up the occupied resources by such terminated processes.yes, indeed, that will be done by PMON. But I'm trying to understand how PMON will do that work. If an abnormal ended session is in the instance, how will PMON identify it and what will it do?
Regards,
Alex

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