NIECONN_REFUSED issues during sapcontrol execution and sapcontrol debug option

This is a website that helps how to resolve issues with sapcontrol

https://blogs.sap.com/2015/09/07/how-to-solve-nieconnrefused-issues-during-sapcontrol-execution/


Also some additional points:

Check the directory /sapmnt/<SID>/global/sapcontrol for multiple log files having some numbers_portno._<Instance no._hostname

Those need to be removed for a particular instance which is not getting started or identified.

And run the sapstartsrv command for particular instance.


You can also find the exact root cause of the problem with below debug option:

/usr/sap/<SID>/<instance>/exe/sapcontrol -prot NI_HTTP -nr <inst number> -function GetInstanceProperties -debug

Snote: 2192740 - sapcontrol : -debug option does not show debug information