Creating a collection from a query in Apex 4.2 is not populating the data into the collection.

Question

I have a process that creates a collection with data from multiple tables. The query returns multiple rows in 'Sql commands' tab. The same query is used to create the collection in 'Before Header' and when i create a region with Region source as
Select * From apex_collections Where collection_name = 'load_dashboard';
At the time of rendering the page shows me 'no data found'.
what could be the problem? Are there any prerequisites before creating the collection?
Thanks in Advance,
Sriram

Answer 1

Hi Denes,
Below is my code for creating and saving data into the collection.
if apex_collection.collection_exists(p_collection_name =>'load_dashboard') then
   apex_collection.delete_collection(
         p_collection_name =>'load_dashboard');
end if;
apex_collection.create_collection_from_query(
    p_collection_name => 'load_dashboard',
    p_query => 'select a.rowid
               ,b.first_name
               ,b.last_name
               ,c.job_title
               ,d.parent
               ,d.child_level_1
               ,d.child_level_2
               ,a.resource_allocation
               ,a.person_id
               ,a.month_id
               ,a.oracom_project_id    ,wwv_flow_item.md5(a.rowid,b.first_name,b.last_name,c.job_title,d.parent,d.child_level_1,d.child_level_2,a.resource_allocation,a.person_id,a.month_id,a.oracom_project_id)
from oracom_resource_management a, oracom_people b,oracom_job c ,oracom_project d where a.supervisor_id=886302415 and a.month_id=201312 and a.oracom_job_id=c.job_id and a.person_id=b.person_id and a.oracom_project_id=d.oracom_project_id',
   p_generate_md5 => 'YES'
Sriram.