I just installed SQLPLUS via this Ubuntu documentation. What are the default login and password credentials? Following the documentation, I already tried sqlplus username/password@//dbhost:1521/SID I have investigated similar questions below, but none of the solutions have been successful for me.
https://askubuntu.com/questions/159939/how-to-install-sqlplus#
Oracle TNS: net service name is incorrecly specified
How come sqlplus not connecting?
I have tried testuser/password credentials
sqlplus64 username/password@//dbhost:1521/SID
SQL*Plus: Release 12.1.0.2.0 Production on Wed Oct 14 23:08:13 2015
Copyright (c) 1982, 2014, Oracle. All rights reserved.
ERROR:
ORA-12154: TNS:could not resolve the connect identifier specified
Enter user-name: testuser
Enter password:
ERROR:
ORA-12162: TNS:net service name is incorrectly specified
Enter user-name:
How do I login, I'm sorry the comments don't make sense to me, could someone please write out an example, should I be 1sqlpus 64 username/password@//dbhost:1521/` ?