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

Last updated on FEBRUARY 24, 2017

Applies to:

Oracle Database - Enterprise Edition - Version 10.2.0.5 to 11.2.0.4 [Release 10.2 to 11.2]
Oracle Net Services - Version 11.2.0.3 to 11.2.0.3 [Release 11.2]
Oracle Net Services - Version 12.1.0.2 to 12.1.0.2 [Release 12.1]
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

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