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ORA-01843 "not a valid month" error when opening APEX link

CaglarJul 18 2025

Hello All,

I built a web application in Oracle APEX.

APEX 24.2.0

Oracle Database 19c Enterprise Edition Release 19.0.0.0.0 - Production Version 19.3.0.0.0

I have a URL like this:

https://www.fonanalizim.com/ords/r/apexprod/yfap/fon-detay?p2_fon_kodu=TLY&p2_fon_turu=Serbest%20%C5%9Eemsiye%20Fonu&p2_analiz_tarih=18%2F07%2F2025&p2_kap_link=%2Ftr%2Ffon-bilgileri%2Fozet%2Ftly-tera-portfoy-birinci-serbest-fon&p2_fon_adi=TERA%20PORTF%C3%96Y%20B%C4%B0R%C4%B0NC%C4%B0%20SERBEST%20FON&p2_analiz_tarihi2=18%2F07%2F2025

When I open this link directly in a browser, everything works fine. However, when I send the same link via WhatsApp and open it from there, I get the following error:

ORA-01843: not a valid month

Has anyone experienced similar behavior or knows how to handle date formats correctly in URLs shared over WhatsApp or other messaging apps?

Thanks in advance

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Added on Jul 18 2025
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