SQL Developer - Use tnsnames.ora file for new connections - TheITBros
https://theitbros.com/sql-developer-use-tnsnames-ora-file/
WEBThe tnsnames.ora file is used to resolve your database alias to the full Oracle server database address from a client device. The file contains the database connection name, protocol, address (IP or FQDN), network port number, and instance name.
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