Shulou(Shulou.com)06/01 Report--

1 find out the user's session:

SELECT SID, SERIAL# FROM V$SESSION WHERE USERNAME='epdm'

2 kill the session of user epdm:

ALTER SYSTEM KILL SESSION 'SID, SERIAL#'

3 delete user epdm

DROP USER EPDM CASCADE

Ps: how to view the users who are currently logged into the database:

SELECT * FROM V$SESSION WHERE TYPE='USER'

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