Error: PDE-PER001 Internal error (deprn 2)

Question

When stepping trough my code in debug mode I got the above error while opening my cursor. When running this code from my form, it is not working either, but it is giving me no messages.
All my other cursors are working fine.
Here is the code i am using:
PROCEDURE Facturatie (vergdatum in DATE, grondkamer in NUMBER)IS
verzoek_rec NUMBER(10);
datum_klaar DATE;
rb_datum DATE;
cursor facturatie_cur (fa_begindatum in date, gk in number)
is
select verzoek.verzoek_id
from ovg.ovg_verzoek verzoek
, ovg.ovg_behandeling behandeling
where behandeling.datum_gereed is null
and behandeling.begindatum = fa_begindatum
and verzoek.verzoektype IN ('toetsing eenmalige pacht', 'registratie teeltpacht')
and behandeling.behandelstap = 'RB'
and behandeling.verzoek_id = verzoek.verzoek_id
and verzoek.ins_relatie_nr = gk;
BEGIN
datum_klaar := TRUNC(SYSDATE);
rb_datum := vergdatum + 1;
IF NOT facturatie_cur%ISOPEN THEN
OPEN facturatie_cur (trunc(rb_datum), grondkamer); -- This line gives the error
END IF;
LOOP
-- Haal record op
FETCH facturatie_cur into verzoek_rec;
exit when facturatie_cur%NOTFOUND;
END LOOP;
CLOSE facturatie_cur;
END Facturatie;
Somebody saw this before???
thanks in advance,
Axel

Answer 1

This rather cryptic message is rare I have found that it means either
The cursor either didn't return any rows
or
There is a permissions problem on one of the tables
or
There is a problem with the argument you are passing to the cursor
This last looks most likely - Could you be getting precision or conversion errors...?