ora-12705 cannot access nls data files or invalid environment specified

This error appear On Sql developer .

ORA-00604: error occurred at recursive SQL level 1
ORA-12705: Cannot access NLS data files or invalid environment specified

Solution :

Try to add following lines to %SQL_DEV_HOME%\sqldeveloper\bin\sqldeveloper.conf
AddVMOption -Duser.language=en
AddVMOption -Duser.country=US

us depend on your language .
en :  England and so on ….

Thank you
Osama Mustafa

6 thoughts on “ora-12705 cannot access nls data files or invalid environment specified

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