ORA-06502: PL/SQL with Oracle XE (not with sqldeveloper)

Question

I have this error message with Oracle XE whereas I have no message at all with the same request if I use sqldeveloper.
It seems that the error happens when there is too many information returned by the request. If I add a "where" to select less rows, I don't have the error anymore.
Do you know how I can solve this problem?
Thanks in advance for your answers.
Richard

Answer 1

The problem is happening again.
When it happens, if I quit and I start again Oracle XE, the problem does not happen at first, but happens again after a while (the duration before the error is not always the same). If I increase the number of lines that are printed for the result of a request, I can induce the error; if I decrease the number of lines, the error is not happening.
Here is one of the request (that request returns about 5000 rows) that cause the error, and the complete error message:
ORA-06502: PL/SQL : erreur numérique ou erreur sur une valeur: tampon de
chaîne de caractères trop petit
Translation: buffer for the strings is too small.
select code_pers, nom, prenom, titre, sexe,
date_naissance, pays_nationalite.code_pays_iso,
fonction_institution, code_institution,
complement_adresse_institution, complement_tel_institution,
adresse1_perso_debut, adresse2_perso_rue, adresse3_perso_zip_ville,
pays_adresse.code_pays_iso,
tel_perso, email, site_web, fax,
lower(substr(langue_courrier, 1, 2)),
case
when (adresse_courrier_preferee = 'P') then 'p'
when (adresse_courrier_preferee = 'I') then 'i'
else null
end,
contact_rapide, discipline,
case
when (voeux = 'Vrai') then 'o'
when (voeux = 'Faux') then 'n'
else null
end,
nb_plaquettes, nb_affiches, date_modif
from personne2 join pays2 pays_nationalite
on personne2.nationalite = pays_nationalite.NOM_PAYS
join pays2 pays_adresse
on personne2.pays_perso = pays_adresse.NOM_PAYS