It will give the same very quick effect as ALTER SYSTEM DISCONNECT SESSION. Other option to kill session is to kill dedicated process on OS.
![oracle kill session rac oracle kill session rac](https://www.ktexperts.com/wp-content/uploads/2021/10/contab-kt.png)
Generally there are two methods to kill a session in Oracle Database:
![oracle kill session rac oracle kill session rac](https://i0.wp.com/ittutorial.org/wp-content/uploads/2019/03/kill-session.jpg)
#ORACLE KILL SESSION RAC HOW TO#
This article describes in short how to kill a session in Oracle Database