-- 1. Put a HIDDEN field P1_IS_LOADED in the region
-- 2. Requesting datas in region becomes:
SELECT /* your columns */
FROM /* your tables */
WHERE 1 = 1
AND nvl(:P1_IS_LOADED, 'N') = 'Y'
-- 3. At page level:
>> Post-Rendering > After Regions > Computation > add one computation with:
Computation: Static Value: Y