In 11gR1 RAC, my listener is giving the following output.
lsnrctl status
Connecting to (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1521))
TNS-12541: TNS:no listener
TNS-12560: TNS:protocol adapter error
TNS-00511: No listener
Solaris Error: 146: Connection refused
All the database instances are working fine and I am able to connect to sqlplus prompt with all SID's.
I even tried re-editing the listener.ora and manually register the instances.
I then started the listener but it gave me an output : "*The listener supports no services*"
Am I missing something? Please help.