would like to see the Time-to-live (TTL) value for a ‘AAAA’ and A record for domains. How do I see Time-to-live (TTL) for a DNS record under Unix or Linux operating systems using command line options?
Can you explain DNS name resolution concept? Why I need to set DNS resolution for my Windows or Linux server? How do I setup DNS name resolution under Linux / UNIX server system?
Q. My Oracle XE installation was working fine, but today I’m getting an error – which read as follows under Ubuntu Linux :
ORA-12154: TNS:could not resolve the connect identifier specified
How do I fix this problem without reinstalling Oracle?
Continue reading “ORA-12154: TNS:could not resolve the connect identifier specified Error and Solution”
My ISP DNS servers are overloaded, can you give me free dns server IP address for fast name resolution?
Q. My mail delivery fails with DNS: Service unavailable error. How do I fix this error under Linux / UNIX operating systems?
Q. I’m getting following error on my Debian Linux system:
mv cannot move /etc/resolv.conf.dhclient-new to /etc/resolv.conf: Operation not permitted
How do I fix this problem?
Continue reading “DHCP Client Error: mv cannot move /etc/resolv.conf.dhclient-new to /etc/resolv.conf: Operation not permitted”