PROMPT Force delete duplicate User Object Index Storages

DECLARE
   bug_no varchar2(8) := 'CK915523';
BEGIN

  update ck_migration_objects set ci_created = 'N' where ci_stage = 'CKPREMIG' and ci_name = bug_no;

  for ins in
  (
    select ins.id id
    from ci_user_object_index_storages@r212 ins
    where ins.id < ( select max(ins2.id)
 			   from  ci_user_object_index_storages@r212 ins2
                     where ins.id != ins2.id
                     and   ins.cluster_reference = ins2.cluster_reference 
			   and   ins.index_reference = ins2.index_reference
                   )
    and ins.application_system_owned_by in ( select ci_appid	    					          
	 						   from ck_migration_objects
						         where ci_stage = 'APPSEL' )
  )
  loop
    ciiutl.delete_element@r212(ins.id, 'INS');
  
    delete from sdd_elements@r212
    where el_id = ins.id;
	    
  end loop;

  update ck_migration_objects set ci_created = 'Y' where ci_stage = 'CKPREMIG' and ci_name = bug_no;
   
  commit;
  
EXCEPTION 
  when others then
     dbms_output.put_line (' ** Exception Raised ** ');
     dbms_output.put_line ('...ERROR: '||substrb(sqlerrm, 1, 200));
     raise;
	 
end;
/
