How to fix the Oracle error PGA-21004: invalid string specified by NLS_LANG?

In this post, you’ll learn more about the Oracle ErrorPGA-21004: invalid string specified by NLS_LANG with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

PGA-21004: invalid string specified by NLS_LANG

Reason for the Error PGA-21004: invalid string specified by NLS_LANG

Cause: The component of the NLS_LANG environment variable was not valid. The component can be the language, territory, or character set.

How to fix the Error PGA-21004: invalid string specified by NLS_LANG ?

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

Action: Correct the invalid component and restart the RRM process.