EXEC SQL FAILS

Question

Hi,
I am having 2 SQL blocks which calls the function HPS_SELECT_PIN_NB and INC_PIN_ERROR_NUMBER in oracle . Now the problem is that in the function inc_pin_error_number () .I see the trace event
trace_event("Debut inc_pin_error_number()", PROCESSING);
but i am NOT able to execute the EXEC SQL EXECUTE statement ( I guess that the control is not going in this EXEC statement ) , but when i call this same function (HPS_INC_PIN_NB) from the function load_pin_error_number it works .
Please have a look at the two functions below and suggest as to why the functions is NOT being called from inc_pin_error_number .
BLOCK 1
int load_pin_error_number (V_card_number,
V_pin_verification_number)
char *V_card_number;
int *V_pin_verification_number;
EXEC SQL BEGIN DECLARE SECTION;
int response_code;
VARCHAR T_card_number[22];
int T_pin_verification_number;
VARCHAR ERREUR[256];
EXEC SQL END DECLARE SECTION;
char buffer[LG_MAX];
trace_event("Debut load_pin_error_number()", PROCESSING);
memset(T_card_number.arr, 0, sizeof(T_card_number.arr));
memcpy(T_card_number.arr, V_card_number, strlen(V_card_number));
T_card_number.len = strlen(V_card_number);
response_code =999;
EXEC SQL EXECUTE
BEGIN
:response_code:= HPS_SELECT_PIN_NB (:T_card_number,
:T_pin_verification_number);
EXCEPTION
WHEN OTHERS THEN BEGIN
:response_code :=-2;
:ERREUR := SQLERRM;
END;
END;
END-EXEC;
if (response_code == -2)
memset(buffer, 0, sizeof(buffer));
sprintf(buffer,"GET PIN ERROR ERROR : %s\n", ERREUR.arr);
trace_event(buffer, ERROR);
*V_pin_verification_number = T_pin_verification_number;
sprintf(buffer,"V_pin_verification_number %d\n", V_pin_verification_number);
trace_event(buffer,V_pin_verification_number);
trace_event("Fin load_pin_error_number()", PROCESSING);
sprintf(buffer,"Response_code %d\n", response_code);
trace_event(buffer,response_code);
return(response_code);
BLOCK 2
int inc_pin_error_number (V_card_number)
char *V_card_number;
EXEC SQL BEGIN DECLARE SECTION;
int response_code;
VARCHAR T_card_number[22];
VARCHAR ERREUR[256];
EXEC SQL END DECLARE SECTION;
char buffer[LG_MAX];
trace_event("Debut inc_pin_error_number()", PROCESSING);
memset(T_card_number.arr, 0, sizeof(T_card_number.arr));
memcpy(T_card_number.arr, V_card_number, strlen(V_card_number));
T_card_number.len = strlen(V_card_number);
response_code =-1;
EXEC SQL EXECUTE
BEGIN
:response_code:= HPS_INC_PIN_NB (:T_card_number);
EXCEPTION
WHEN OTHERS THEN BEGIN
:response_code :=-2;
:ERREUR := SQLERRM;
END;
END;
END-EXEC;
if (response_code == -2)
memset(buffer, 0, sizeof(buffer));
sprintf(buffer,"INC PIN ERROR ERROR : %s\n", ERREUR.arr);
trace_event(buffer, ERROR);
trace_event("Fin inc_pin_error_number()", PROCESSING);
return(response_code);
Regards
Dhananjay Javalkar
null

Answer 1

Perhaps you can trap (profile) the query in Oracle to see what it gets submitted,
thing is this query
select id from table where ProcessedStatusColumn is null and DateColumn = (sub select to get most recent date in table where ProcessedStatusColumn is null)
is not guaranteed to return a value, you need a default returned in case the search failed e.g.
select
NVL(id, 0)
from table where ProcessedStatusColumn is null and DateColumn =
(sub select to get most recent date in table where
ProcessedStatusColumn is null)
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