Who am I, script

set termout off

store set store rep

set head off

set pause off

set termout on

select 'User: '|| user || ' on database ' || global_name,

       '  (term='||USERENV('TERMINAL')||

       ', audsid='||USERENV('SESSIONID')||')' as MYCONTEXT

from   global_name;

@store

set termout on