Hi all, I\'ve uploaded a photo of the way I see dates in PL/SQL Developer, I see
You may try changing 'Date Format', 'Timestamp Format', 'Timestamp TZ Format' to "DD-MON-YYYY HH24:MI:SS" (minus quotes) or in the format you want.
Access the preferences from Tools->Preferences->Database->NLS
Tools->Preferences->Database->NLS