Doc

    Name:    undoc.sql

    This script lists all undocumented INIT.ORA parameters

#

ttitle 'Documented and Undocumented INIT.ora Parameters'

SELECT name, value 
FROM v$parameter
UNION ALL
SELECT ksppinm, ksppivl 
   FROM x$ksppi  
 WHERE  SUBSTR(ksppinm,1,1) = '_';