Am having this problem trying to startup a new connection on my Oracle database 11g sql developer. when i start it up on the VMbox, it starts up but when i try to create a new connection it gives me the below error .
this is a load down of what i did,
connection name: myconnection
password: ora1 (saved password)
Connection type: Basic
then i got the below error.
STATUS: FAILURE -TEST FAILED: The network Adapter could not establish the connection
If this is all running inside the VM (maybe you are using one of the Developer Day images under VirtualBox), then it should just work. If The network Adapter could not establish the connection, that might mean the listener did not start for some reason.
from a terminal console and see if it is running or not. If not, try