How to fix the Oracle error PGA-21014: invalid character(s) found in network name ‘string’?

In this post, you’ll learn more about the Oracle ErrorPGA-21014: invalid character(s) found in network name ‘string’ with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

PGA-21014: invalid character(s) found in network name ‘string’

Reason for the Error PGA-21014: invalid character(s) found in network name ‘string’

Cause: One or more invalid characters were found in the network name portion of the fully-qualified local LU name.

How to fix the Error PGA-21014: invalid character(s) found in network name ‘string’ ?

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

Action: The network name must begin with an upper-case alphabetic character or one of the national characters $, #, or @. Subsequent characters can be upper-case alphabetic, national, or numeric. Reenter the command line with a valid network name specified in the fully-qualified local LU name.