My Oracle Support Banner

TNS-12518 with connections to 12c Database using the 12c Listener (Doc ID 1989707.1)

Last updated on JANUARY 01, 2020

Applies to:

Oracle Net Services - Version 12.1.0.1 and later
Information in this document applies to any platform.

Symptoms

When making a connection to the 12c Database via the 12c Listener, this may fail persistently (all the time) with TNS-12518

Changes

 This may be a new installation or there may have been changes made to the Listener.ora file (specifically, the SID_LIST section)

Cause

To view full details, sign in with your My Oracle Support account.

Don't have a My Oracle Support account? Click to get started!


In this Document
Symptoms
Changes
Cause
Solution
References


My Oracle Support provides customers with access to over a million knowledge articles and a vibrant support community of peers and Oracle experts.