Last updated on JULY 17, 2017
Applies to:Oracle Net Services - Version 22.214.171.124.0 to 126.96.36.199 [Release 9.2 to 12.1]
Information in this document applies to any platform.
***Checked for relevance on 15-AUG-2016***
An attempt to start the listener fails with the following error stack:
TNS-12546: TNS:permission denied
TNS-12560: TNS:proto adapter error
TNS-00516: Permission denied
A listener trace reveals the following message:
[22-AUG-2007 12:22:02:571] nttvlser: valid node check on incoming node <ip address here>
[22-AUG-2007 12:22:02:571] nttvlser: Denied Entry: <ip address here>
This is likely a new installation or the sqlnet.ora file on the server has recently been edited to include a setting for TCP.VALIDNODE_CHECKING=YES.
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