How to fix the Oracle error SQL-02136: Invalid NCHAR character set id?

In this post, you’ll learn more about the Oracle ErrorSQL-02136: Invalid NCHAR character set id with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

SQL-02136: Invalid NCHAR character set id

Reason for the Error SQL-02136: Invalid NCHAR character set id

Cause: An attempt was made to bind or define an NCHAR host variable, and the NLS_NCHAR variable was not set correctly.

How to fix the Error SQL-02136: Invalid NCHAR character set id ?

You can fix this error in Oracle by following the below steps

Action: Set the NLS_NCHAR environment variable to a valid fixed width character set id and run the application again.