Dear Sir ,

I am also facing the same issue ** server can't find crsprod-scan: SERVFAIL.
Please check below mentioned outputs and what exactly i need to enter in my /etc/resolv.conf.

Thanks in Advance.

[root@alpha ~]#
[root@alpha ~]#
[root@alpha ~]# nslookup alpha.oraclexpert.com
Server: 172.168.190.1
Address: 172.168.190.1#53

Name: alpha.oraclexpert.com
Address: 172.168.190.1

[root@alpha ~]# nslookup beta.oraclexpert.com
Server: 172.168.190.1
Address: 172.168.190.1#53

Name: beta.oraclexpert.com
Address: 172.168.190.2

[root@alpha ~]# nslookup crsprod-scan
;; Got SERVFAIL reply from 172.168.190.1, trying next server
Server: 172.168.190.2
Address: 172.168.190.2#53

** server can't find crsprod-scan: SERVFAIL

[root@alpha ~]# cat /etc/resolv.conf
options timeout: 3
options timeout: 3
nameserver 172.168.190.1
nameserver 172.168.190.2

[root@alpha ~]# dig alpha.oraclexpert.com

; <<>> DiG 9.3.6-P1-RedHat-9.3.6-4.P1.el5 <<>> alpha.oraclexpert.com
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 48344
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;alpha.oraclexpert.com. IN A

;; ANSWER SECTION:
alpha.oraclexpert.com. 86400 IN A 172.168.190.1

;; AUTHORITY SECTION:
oraclexpert.com. 86400 IN NS alpha.oraclexpert.com.

;; Query time: 1 msec
;; SERVER: 172.168.190.1#53(172.168.190.1)
;; WHEN: Mon Sep 2 15:25:19 2019
;; MSG SIZE rcvd: 69

Why do you expect a name server to find crsprod-scan? That's not a domain name.

And alpha. and beta. don't work for me -- are those supposed to be real domain names? I note that the name server is returning itself for alpha. and the .2 for beta.

What's in /etc/hosts?

1 members found this post helpful.

Then go back to your other thread, where you wanted us to give you links so you could 'learn' about DNS (and where you were GIVEN a link). There are also many thousands of how-to guides you can easily find about setting up DNS and how the hosts file plays into things.
https://www.linuxquestions.org/quest...in-4175635931/

This was last year..have you not progressed ANY? And if you're installing Oracle, their install guides tell you what you need to put, where.