Myslím, že to udělá toto:
SELECT
AUP.USERNAME,
AUP.MENU_STRING MODULE,
NVL(UGA.PERMISSION,AUP.DEFAULT_PERMISSION) PERMISSION
FROM
(SELECT
DU.USERNAME,
A.PROGRAM_ID,
A.MENU_STRING,
'Y' DEFAULT_PERMISSION
FROM
APPLICATION A,
DBA_USERS DU
WHERE
A.PROGRAM_ID NOT IN ('.SEPARATOR')
AND DU.USERNAME NOT LIKE '%#') AUP
LEFT JOIN
(SELECT
USER_ID,
PROGRAM_ID,
PERMISSION
FROM
USER_PGM_AUTHORITY
WHERE
PROGRAM_COMPONENT='PROGRAM') UGA
ON
AUP.USERNAME=UGA.USER_ID
AND AUP.PROGRAM_ID=UGA.PROGRAM_ID
WHERE
aup.menu_string = 'Vendor Maintenance'
ORDER BY
AUP.USERNAME,
AUP.MENU_STRING;