Database Networking (MOSC)

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ORA-12541: TNS:no listener

edited Nov 27, 2019 4:00AM in Database Networking (MOSC) 5 commentsAnswered ✓

Hi there,

in brief I two new Oracle 12C database environments (test/prod) that require use of port 1521/2 respectively.

I have to use hostnames which have now been setup on the servers correctly so I can now ping test from my PC.

I can connect via putty and scp from my PC with tnsnames entries set the same as on the local machines.

I can sqlplus via putty on local machines and can sqlplus from my PC to production which uses the standard port 1521, similarly I can

connect via PL/SQL Dev, BUT I can't connect to the test databases using port 1522, I just get the above message.

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