How to fix the Oracle error TNS-12215: TNS:poorly formed PREFERRED_NAVIGATORS Addresses in TNSNAV.ORA?

In this post, you’ll learn more about the Oracle ErrorTNS-12215: TNS:poorly formed PREFERRED_NAVIGATORS Addresses in TNSNAV.ORA with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

TNS-12215: TNS:poorly formed PREFERRED_NAVIGATORS Addresses in TNSNAV.ORA

Reason for the Error TNS-12215: TNS:poorly formed PREFERRED_NAVIGATORS Addresses in TNSNAV.ORA

Cause: Address binding for PREFERRED_NAVIGATORS entry is improperly entered. entry.

How to fix the Error TNS-12215: TNS:poorly formed PREFERRED_NAVIGATORS Addresses in TNSNAV.ORA ?

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

Action: Check your PREFERRED_NAVIGATORS entry and fix it in TNSNAV.ORA