TNSPING is a utility used to test if a SQL*Net connect string can connect to a remote listener. TnsPing only tests if the listener is available. It cannot tell if the databases behind the listener is up or not.
Syntax: TNSPING TnsName Key TnsName The TNS name for the remote database. This may (but does not have to) match the dbname.
Install location : ORACLE HOME/bin
“Make everything as simple as possible, but not simpler” ~ Albert Einstein
Oracle error ORA-12154 - TNS:could not resolve service name.
Oracle Networking - TNSNames, Listener.ora
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