Child Concurrent Program Goes To Inactive / No Manager Mode

Hi All,

I'm facing a problem, googled a lot but didnt get the required answer.

Issue:

1. Created 2 concurrent program of PL/SQL type executable.
2. Assigned both to a responsibility.
3. Assigned both to Standard Manager.
4. Submitted Parent concurrent program from SRS window.
5. Parent program submitted child program ( 2 in number).
6. Parent program gets in to Running mode and fires two child programs.
7. The above fired 2 child programs remain in Inactive / No Manager Mode for days, never completes.
8. If I submit child program as parent program from SRS window it completes normally.

Parent program partial code:

FOR r_cust IN c_cust

   LOOP