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

In this post, you’ll learn more about the Oracle ErrorORA-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

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

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

Address binding for PREFERRED_NAVIGATORS entry is improperly entered. entry.

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

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

Check your PREFERRED_NAVIGATORS entry and fix it in TNSNAV.ORA