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.

      TNSPING TnsName

   TnsName  The TNS name for the remote database.
            (This can 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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