Dropping a connected user from an Oracle 10g database schema

Question

Is there a better way to forcefully disconnect all users from an Oracle 10g database schema than restarting the Oracle database services?

We have several developers

Answer 1

To find the sessions, as a DBA use

select sid,serial# from v$session where username = ''

If you want to be sure only to get the sessions that use SQL Developer, you can add and program = 'SQL Developer'. If you only want to kill sessions belonging to a specific developer, you can add a restriction on os_user

Then kill them with

alter system kill session ','

(e.g. alter system kill session '39,1232')

A query that produces ready-built kill-statements could be

select 'alter system kill session ''' || sid || ',' || serial# || ''';' from v$session where username = ''

This will return one kill statement per session for that user - something like:

alter system kill session '375,64855';

alter system kill session '346,53146';