Web Reference: Open SQL Developer package content. Go to Applications, right click on SQL Developer and select "Show Package Contents". Open sqldeveloper.conf using a text editor. # Options to avoid "ORA-12705: Cannot access NLS data files or invalid environment specified." your solution is help me,thank you bro! JAVA_TOOL_OPTIONS Windows Environment Variable. Check the syntax of the ALTER SESSION command and the NLS parameter, correct the syntax and retry the statement, or specify the correct directory path/values in the environment variables. May 19, 2019 · ORA-12705 tells you that your NLS settings are not correct, you have to fix them first before doing something to the database.
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