How to fix the Oracle error ORA-09340: Specified ORACLE_SID is either invalid or too long?

In this post, you’ll learn more about the Oracle ErrorORA-09340: Specified ORACLE_SID is either invalid or too long with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-09340: Specified ORACLE_SID is either invalid or too long

Reason for the Error ORA-09340: Specified ORACLE_SID is either invalid or too long

ORACLE_SID must be at the most 4 alphanumeric characters.

How to fix the Error ORA-09340: Specified ORACLE_SID is either invalid or too long ?

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

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