How to troubleshoot when having error 'No data available' for CPU utilization in Linux and AIX servers?

How to troubleshoot when having error 'No data available' for CPU utilization in Linux and AIX servers?

Possible Scenario:  I get a "No data available" message for Inode Usage while trying to monitor servers.

Solution:
The connection must be established only through TELNET or SSH mode. 
Check whether the below command runs and displays corresponding output in the system.

Command to be executed on the server:

Monitor name Commands
Novell       /usr/bin/vmstat 1 3
Linux    /usr/bin/vmstat 1 3
Freebsd    /usr/bin/vmstat 1 4
Macos    export UNIX95;top -l 3 -n 1|grep 'CPU usage:'
Sun            /usr/bin/vmstat 1 3
Winodows    cpu.vbs