How to kill all active and inactive oracle sessions for user

Question

I am trying the below script to kill all active and inactive oracle sessions for user at once but it doesn\'t work. The script executes successfully but does not kill sessions f

Answer 1

For Oracle 11g this may not work as you may receive an error like below

Error report:
SQL Error: ORA-00026: missing or invalid session ID
00026. 00000 -  "missing or invalid session ID"
*Cause:    Missing or invalid session ID string for ALTER SYSTEM KILL SESSION.
*Action:   Retry with a valid session ID.

To rectify this, use below code to identify the sessions

SQL> select inst_id,sid,serial# from gv$session or v$session

NOTE : v$session do not have inst_id field

and Kill them using

alter system kill session 'sid,serial,@inst_id' IMMEDIATE;