My Oracle Support Banner

New Connections to the Database lead to ORA-12518 or TNS-12518 (Doc ID 340089.1)

Last updated on JULY 04, 2023

Applies to:

Oracle Net Services - Version and later
Information in this document applies to any platform. Database may be configured as DEDICATED or Shared Server (MTS).


* ORA-12518 errors in the listener log when new users are connecting to the Database. Example is as follows:

This is an intermittent problem that would likely occur at peak database usage times.


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

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