select
  inst_id,                                 -- INST_ID NUMBER
  namespace,                               -- NAMESPACE VARCHAR2(31)
  attribute,                               -- ATTRIBUTE VARCHAR2(31)
  value,                                   -- VALUE VARCHAR2(4000)
  username,                                -- USERNAME VARCHAR2(31)
  clientidentifier                         -- CLIENTIDENTIFIER VARCHAR2(65)
from
  x$globalcontext
where
  upper(namespace) not like 'SYS_%'