My Oracle Support Banner

TNS-12518 and TNS-12540 Errors Reported in Listener Log (Doc ID 1539108.1)

Last updated on AUGUST 16, 2022

Applies to:

Oracle Net Services - Version 11.1.0.6 and later
Oracle Database - Enterprise Edition - Version 10.2.0.5 to 11.2.0.4 [Release 10.2 to 11.2]
Information in this document applies to any platform.

Symptoms

1.Have a Large number of connections simultaneously and received the following error with new connection attempts :

 

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
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.