Sometimes You can get “TNS-12203: TNS:unable to connect to destination ” error.
Details of error are as follows.
TNS-12203: TNS:unable to connect to destination
service iptables stop chkconfig iptables off service ip6tables stop chkconfig ip6tables off
You can disable firewall in Redhat with below script.
systemctl stop firewalld systemctl disable firewalld
Do you want to learn more details about RMAN, then read the following articles.
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