Validation returns : no data found + unhandled user-defined exception

Question

Hi, I'm working with Application Express 4.1.1.00.23.
I have an application for timesheet management.
On one page, I've got a report (not interactive) in which you can enter the hours you've worked. First you add a free line, choose the task and then enter the hours you've spent.
You can only have one empty line at a time. If you try to add a line when you already have an empty line, a validation will display an error. It worked fine in version 3.2. Now we upgraded to 4.1 and get a weird error :
1) The validation msg appears fine
2) The report appears fine
3) There is a msg at the end of the report saying :
report error:
ORA-01403: no data found
ORA-06510: PL/SQL: unhandled user-defined exception
Could somebody point out the source of this problem ?
Thank you!
Here is the debug :
0.31117     0.00204     parse query as: FEUILLES_DE_TEMPS     4     
0.31319     0.07865     ...Execute Statement: select NULL "CHECK$01", NULL "nom_projet2", NULL "NO_TACHE_ENTRE", NULL "NO_TACHE", NULL "NO_SEMAINE_EMPLOYE", NULL "NOM_TACHE", NULL "Tâches", NULL "SEQUENCE", NULL "Heures dim", NULL "DIM", NULL "Heures lun", NULL "LUN", NULL "Heures mar", NULL "MAR", NULL "Heures mer", NULL "MER", NULL "Heures jeu", NULL "JEU", NULL "Heures ven", NULL "VEN", NULL "Heures sam", .........
0.39191     0.00158     print column headings     4
0.39342     0.02546     rows loop: 500 row(s)     4
0.41889     0.00087     report error: ORA-01403: no data found ORA-06510: PL/SQL: unhandled user-defined exception
.....

Answer 1

Hi, thanks for your answer. Here is the validation we are executing. I'm pretty sure its fine since count(*) always return a value (plus we see V2 in the debug...) :
declare
l_count number;
begin
apex_debug_message.enable_debug_messages(7);
apex_debug_message.log_message('-----------------------------------V1----------------------------------');
-- get remaining empty tasks count
SELECT count(*) into l_count
FROM VIEW_TACHE_SYSTEME
WHERE NO_TACHE NOT IN (SELECT DISTINCT NO_TACHE FROM TACHE_JOUR WHERE NO_SEMAINE_EMPLOYE = :P36_NO_SEMAINE_EMPLOYE);
apex_debug_message.log_message('-----------------------------------V2----------------------------------');
apex_debug_message.log_message(l_count);
if l_count = 0 then
return 'Veuillez utiliser la tâche vide avant d''ajouter une ligne.';
else
return null;
end if;
end;
Here is the debug :
0.14643     0.00318     ...Validation "ADD_ROW_VALIDATION" - Type: FUNC_BODY_RETURNING_ERR_TEXT     4     
0.14961     0.00318     ...Execute Statement: declare function x return varchar2 is begin declare l_count number; begin apex_debug_message.enable_debug_messages(7); apex_debug_message.log_message('-----------------------------------V1----------------------------------'); -- get remaining empty tasks count SELECT count(*) into l_count FROM VIEW_TACHE_SYSTEME WHERE NO_TACHE NOT IN (SELECT DISTINCT NO_TACHE FROM TACHE_JOUR WHERE NO_SEMAINE_EMPLOYE = :P36_NO_SEMAINE_EMPLOYE); apex_debug_message.log_message('-----------------------------------V2----------------------------------'); apex_debug_message.log_message(l_count); if l_count = 0 then return 'Veuillez utiliser la tâche vide avant d''ajouter une ligne.'; else return null; end if; end; return null; end; begin wwv_flow.g_computation_result_vc := x; end;     4     
0.15280     0.01299     -----------------------------------V1----------------------------------     6     
0.16578     0.00310     -----------------------------------V2----------------------------------     6     
0.16888     0.00235     0     6     
0.17123     0.00225     ......Result = Veuillez utiliser la tâche vide avant d'ajouter une ligne.     4     
0.17347     0.00276     ......Did NOT pass     4     
0.17624     0.00314     Add error onto error stack     4     
0.17938     0.00343     ...Error data:     4     
0.18280     0.00327     ......message: Veuillez utiliser la tâche vide avant d'ajouter une ligne.     4     
0.18607     0.00446     ......display_location: INLINE_IN_NOTIFICATION     4     
0.19053     0.00323     ......is_internal_error: false     4     
0.19375     0.00323     ......error_backtrace: - PL/SQL Call Stack - object line object handle number name c000000382130f30 717 package body APEX_040100.WWV_FLOW_ERROR c000000382130f30 833 package body APEX_040100.WWV_FLOW_ERROR c00000039da9b5c8 154 package body APEX_040100.WWV_FLOW_VALIDATION c00000039da9b5c8 363 package body APEX_040100.WWV_FLOW_VALIDATION c00000039da9b5c8 784 package body APEX_040100.WWV_FLOW_VALIDATION c00000039da9b5c8 905 package body APEX_040100.WWV_FLOW_VALIDATION c00000039d1142c8 10005 package body APEX_040100.WWV_FLOW c000000381287050 31 anonymous block