How to fix the Oracle error TNS-00020: INTCTL: missing NAVIGATOR_DATA in TNSNAV.ORA?

In this post, you’ll learn more about the Oracle ErrorTNS-00020: INTCTL: missing NAVIGATOR_DATA in TNSNAV.ORA with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

TNS-00020: INTCTL: missing NAVIGATOR_DATA in TNSNAV.ORA

Reason for the Error TNS-00020: INTCTL: missing NAVIGATOR_DATA in TNSNAV.ORA

Cause: TNSNAV.ORA does not contain the NAVIGATOR_DATA component.

How to fix the Error TNS-00020: INTCTL: missing NAVIGATOR_DATA in TNSNAV.ORA ?

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

Action: Define the ADDRESS(es) for the Navigator, then restart the INTCTL program.