How to fix the Oracle error ORA-12620: TNS:requested characteristic not available?

In this post, you’ll learn more about the Oracle ErrorORA-12620: TNS:requested characteristic not available with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-12620: TNS:requested characteristic not available

Reason for the Error ORA-12620: TNS:requested characteristic not available

The connect request failed because a requested transport characteristic could not be supported by the remote TNS software.

How to fix the Error ORA-12620: TNS:requested characteristic not available ?

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

If appropriate, reexecute with reduced requirements.