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Oracle SQL Developer: ORA-12705 Cannot access NLS data files or invalid environment specified

adnanBIH
adnanBIH Member Posts: 151 Bronze Badge

Dear professionals,

I'm facing next problem: when try to execute SQL query inside SQL Developer it raises error: ORA-12705 Cannot access NLS data files or invalid environment specified.

Error appeared after I changed some region settings in Windows 10 (unfortunately, I cannot remember which one). Exactly the same query executed smoothly before that change in OS.

I tried to alter sqldeveloper.conf file according to this but no success. 

AddVMOption -Duser.language=en
AddVMOption -Duser.region=US
AddVMOption -Duser.country=en

I'm using Sql Developer version 20.4.0.379 and 21.2.1. 

Thanks in advance

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