ORA-12547 While Client Connecting Via SSH Tunnel
(Doc ID 454252.1)
Last updated on FEBRUARY 21, 2020
Applies to:Oracle Net Services - Version 184.108.40.206.0 to 10.2.0.1.0 [Release 9.2 to 10.2]
Information in this document applies to any platform.
This problem can occur on any platform.
Client connection via SSH Tunnel fails with ORA-12547 with IP Filter (TCP Valid Node checking) enabled on the database server.
ie, even if the client IP address is listed in the tcp.invited_nodes , when the client connects via the SSH Tunnel (with port forwarding enabled on the client side) it errors with ORA-12547.
ORA-12547: TNS:lost contact
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