Query to Verify Multi Org is Installed or not

Query : Verify that Multi Org is Installed

select
   multi_org_flag,
   release_name,
   applications_system_name  
from
   apps.fnd_product_groups;

If the value returned is 'Y' then a Multi Org environment exists;
If the value returned is 'N' then a Multi Org environment does not exist;