Which three statements are true about node listeners in a Grid Infrastructure Cluster using Flex ASM?http://www.gratisexam.com/
A.
They run from the Grid Infrastructure home by default.
B.
They listen only for database instances on the same node.
C.
They listen only for the ASM instance on the same node.
D.
There only can be one node listener per node.
E.
They listen on behalf on any ASM instance and all database instances on the same node.
Explanation:
A,D,E
The node listener is a process that helps establish network connections from ASM clients to the ASM instance. The listener process is installed with the ASM software installation.
It runs by default from the Grid $ORACLE_HOME/bin directory on port 1521.
The node listener is the same as a database listener or Oracle Net Listener. Because ASM is usually installed before installing the database, the node listener is configured and started automatically to provide a gateway to the ASM instance for remote clients. This listener is capable of listening for all
instances on that machine, including database instances. After the ASM installation, a
database installation is performed into a different ORACLE_HOME location. Each
ORACLE_HOME location can provide additional listener processes and a set of configuration files. The node listener and separate database listeners can run concurrently on different port numbers or the node listener can be replaced by a separate database listener
C,D and E is correct!
Ops! A, D and E is correct!
I believe D if false, because you could have more than one listener on one node.