Hello, I just finish to install Oracle XE on Fedora 18
so when I try to Start SQL, I get this error.
[root@fedora ~]# sqlplus system
SQL*Plus: Release 184.108.40.206.0 Production on Fri Feb 15 02:18:14 2013
Copyright (c) 1982, 2011, Oracle. All rights reserved.
ORA-01017: invalid username/password; logon denied
I'm sure...I put the correct Password!
aside from the fact you shouldn't use root but your oracle user (or some even less privileged user) to start sqlplus, you need to set up your environment properly to make a login work the way you want to use it. Did you set "ORACLE_SID" in your environment? Are there other database instances next to your XE on that machine?
Does your password contain any special characters that might not be supported by Oracle?