Interactive report based on complex view

Question

firefox 24 , apex 4.0 , db11gxe ,
hi all,
i created an interactive report with this code :
  select c.client_id , c.client_name , c.age , c.email , c.phone ,
p.payment_date , sum(p.amount) "summary"
from clients c , payments p
where c.client_id = p.client_id
group by c.client_id , c.client_name , c.age , c.email , c.phone ,
p.payment_date;
but the problem was i could not delete any of the rows of the report , because there was no checkbox existed , so i created one with "apex_application.checkbox" , and i have got it now , but
i still can not delete any rows ,
i created a button to submit the page , and a process with this code
FOR i in 1..APEX_APPLICATION.G_F01.count
LOOP
   DELETE FROM cp
   WHERE client_id = APEX_APPLICATION.G_F01(i);
END LOOP;
and sure nothing was deleted , and i am facing this error
ORA-01732: data manipulation operation not legal on this view

Answer 1

What is the object "CP" ?
It sounds like it is a view. If it's the same you've used for the IR, then check out "key preserved views"
Oracle doc - http://docs.oracle.com/cd/B28359_01/server.111/b28310/views001.htm#ADMIN11784
Tom Kyte - http://asktom.oracle.com/pls/asktom/f?p=100:11:6474092145067::::P11_QUESTION_ID:548422757486
There could be another issue once you address the error - depending on how you've defined apex_application.checkbox2 (the other is deprecated)
You may not be associating the correct value in g_f01