Use Following Query to find out Product Installation
SELECT application_name "Application Name",
SUBSTR (application_short_name, 1, 10) "Short Name",
RPAD (DECODE (fpi.status, 'I', 'Installed', 'S', 'Shared Install', 'N', 'Not Installed' ), 14, ' ' ) "Install Status", SUBSTR (patch_level, 1, 12) "Patch Level", fa.BASEPATH "Basepath"
FROM fnd_product_installations fpi,
fnd_application fa,
fnd_application_tl fat
WHERE fa.application_id = fpi.application_id
AND fa.application_id = fat.application_id
ORDER BY fpi.application_id;