Hi all, I\'ve uploaded a photo of the way I see dates in PL/SQL Developer, I see
The issue seems to be due to mismatch between NLS parameters in client and database. For such questions, always remember to post the OS details, DB version up to 4 decimals.
To check the the parameter values:
SELECT * FROM v$nls_parameters;
SELECT * FROM nls_database_parameters;
Set the NLS_DATE_LANGUAGE in client exactly same as that of Database. In your case, NLS_DATE_LANGUAGE in database is AMERICAN.
Set the environment variable for NLS_LANG as :
[NLS_LANGUAGE]_[NLS_TERRITORY].[NLS_CHARACTERSET]
so, set it as AMERICAN_AMERICA.WE8MSWIN1252