Script for Hidden Parameters

SET VERIFY OFF
COLUMN parameter      FORMAT a37
COLUMN description    FORMAT a30 WORD_WRAPPED
COLUMN session_value  FORMAT a10
COLUMN instance_value FORMAT a10

SELECT a.ksppinm AS parameter,
       a.ksppdesc AS description,
       b.ksppstvl AS session_value,
       c.ksppstvl AS instance_value
FROM   x$ksppi a,
       x$ksppcv b,
       x$ksppsv c
WHERE  a.indx = b.indx
AND    a.indx = c.indx
AND    a.ksppinm LIKE '/_%' ESCAPE '/'
AND    a.ksppinm = DECODE(LOWER('&1'), 'all', a.ksppinm, LOWER('&1'))
ORDER BY a.ksppinm;