PLS-00231: function error

Question

version : Oracle Database 11g Enterprise Edition Release 11.1.0.7.0 - Production
declare
v_mail_cust_code maz_sr_au_incentive_cust_hist.mail_cust_code%type;
function inc_uniq_code
return varchar2
is
v_unique_code maz_sr_au_incentive_cust_hist.mail_cust_code%type;
v_unique boolean := FALSE;
v_count number;
begin
while v_unique != TRUE
loop
select to_char(round(dbms_random.value(1000000,9999999))) into v_unique_code from dual;
select count(*) into v_count from maz_sr_au_incentive_cust_hist
where rtrim(mail_cust_code) = v_unique_code;
if v_count = 0 then
v_unique := TRUE;
end if;
end loop;
return v_unique_code;
end inc_uniq_code;
begin
select inc_uniq_code into v_mail_cust_code from dual;
dbms_output.put_line('inc_uniq_code : '|| v_mail_cust_code);
end;
error :
ORA-06550: line 22, column 8:
PLS-00231: function 'INC_UNIQ_CODE' may not be used in SQL
ORA-06550: line 22, column 8:
PL/SQL: ORA-00904: "INC_UNIQ_CODE": invalid identifier
ORA-06550: line 22, column 1:
PL/SQL: SQL Statement ignored
Can someone help ?
Thanks
Raghu

Answer 1

correction to by earlier post (table names were given in reverse earlier)
begin
insert into xyz_SR_AU_INCENTIVE_CUST_hist (a,b,c,d)
select a,b,c, package.function_name
from xyz_SR_AU_INCENTIVE_CUST_stage;
end;
error :
ORA-04091: table xyz_SR_AU_INCENTIVE_CUST_HIST is mutating, trigger/function may not see it
ORA-06512: at "xyz_DEV.xyz_INC_PKG", line 13
ORA-06512: at line 2
function code :
function inc_uniq_code
return varchar2
is
v_unique_code xyz_sr_au_incentive_cust_hist.mail_cust_code%type;
v_unique boolean := FALSE;
v_count number;
begin
while v_unique != TRUE
loop
v_unique_code := to_char(round(dbms_random.value(1000000,9999999)));
select count(*) into v_count from xyz_sr_au_incentive_cust_hist
where rtrim(mail_cust_code) = v_unique_code;
if v_count = 0 then
v_unique := TRUE;
end if;
end loop;
return v_unique_code;
end inc_uniq_code;
end xyz_INC_PKG;
xyz_SR_AU_INCENTIVE_CUST_stage does not have any triggers.
Trigger on xyz_SR_AU_INCENTIVE_CUST_hist
CREATE OR REPLACE TRIGGER xyzSRAUICH_TIMESTAMP_BIU_ROW
BEFORE INSERT OR UPDATE
ON xyz_SR_AU_INCENTIVE_CUST_HIST
FOR EACH ROW
BEGIN
IF inserting OR updating THEN
IF inserting THEN
:new.added_user:=USER;
:new.added_date:=SYSDATE;
ELSE
:new.added_user:=:old.added_user;
:new.added_date:=:old.added_date;
END IF;
:new.updated_user:=USER;
:new.updated_date:=SYSDATE;
END IF;
END;
Also, it seems no logic in including this :new.added_user:=:old.added_user;
:new.added_date:=:old.added_date;