Oracle Listener startup Failed "Tns-12541:tns:no Listener" ____oracle

When you turn on Oracle listening, you receive the following error message:

Tns-12541:tns:no Listener Tns-12560:tns:protocol Adapter error tns-00511:tns:no Listener Linux error:lll:Connection Refused at this point, you check to see if your Oracle data is turned on.
If it is turned on, please close.

Shutdown immediate to modify the/etc/hosts file (note that you must have 127.0.0.1 this line, the system by default, the second row is the address of the server):

127.0.0.1 localhost.localdomain localhost 192.168.1.99 oracleserver
Execute again:

Lsnrctl start monitor will be OK.
Boot order: To start the listener, and then start the database to be successful.