How to fix the Oracle error ORA-12635: No authentication adapters available?

In this post, you’ll learn more about the Oracle ErrorORA-12635: No authentication adapters available with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-12635: No authentication adapters available

Reason for the Error ORA-12635: No authentication adapters available

The executable was not linked with any authentication service adapters but the sqlnet.ora parameter that determines whether or not authentication is required was set to true.

How to fix the Error ORA-12635: No authentication adapters available ?

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

Either disable the parameter or relink the executable with service adapters.