I am trying to do ETL from oracle to Hadoop using Sqoop. I have checked the IP and the ports. All ports are good. But I still get ERROR that shows “The Network Adapter could not establish the connection”.
I checked from Internet this error comes out with TNSListener has not been started. I want to make sure TNSListener has been started.
I can use Oracle to sql on the remote Oracle Server. Does it mean TNSListener has been started?