How to fix the Oracle error ORA-06121: NETTCP: access failure?

In this post, you’ll learn more about the Oracle ErrorORA-06121: NETTCP: access failure with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-06121: NETTCP: access failure

Reason for the Error ORA-06121: NETTCP: access failure

The host’s SQL*Net TCP/IP server was unable to test the accessibility of the SID mapping file (specified in CONFIG.ORA) associated with this connection request. See the SQL*Net TCP/IP server log file for more details.

How to fix the Error ORA-06121: NETTCP: access failure ?

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

Contact your customer support representative.