select
SYS_CONTEXT ('USERENV', 'HOST'),
SYS_CONTEXT ('USERENV', 'DB_NAME'),
SYS_CONTEXT ('USERENV', 'SESSION_USER')
from dual
select
SYS_CONTEXT ('USERENV', 'HOST'),
SYS_CONTEXT ('USERENV', 'DB_NAME'),
SYS_CONTEXT ('USERENV', 'SESSION_USER')
from dual