I've installed sqlplus64 throw this tutorial: http://webikon.com/cases/installing-oracle-sql-plus-client-on-ubuntu
I want to practice SQL using sqlplus (I can't connect remotely to school ssh).
I've tried everything I found in google and still can't connect. I don't have any credentials
sqlplus64 / as sysdba
ERROR:
ORA-12545: Connect failed because target host or object does not exist
sqlplus
is a client software that connects to an existing (and running) Oracle database server. You have to also install an Oracle database server. – a_horse_with_no_name