Login/password to SQL plus - 100% Totally newbie!

Question

Dear users,
I'm a 100% Totally newbie - please bear over with me and forgive that I couldn't find the answer to my question in the arhive although I'm sure somebody else has asked exactly this question. And please don't say RTFM etc, because there are a huge amount of manuals etc for oracle and I'm 100% newbie and never worked with Oracle SQL before.
Introduction: I've installed Oracle 11.2 Enterprise Edition and want to go through some step-by-step tutorials - e.g. this tutorial: http://download.oracle.com/docs/cd/B10501_01/server.920/a90842/ch1.htm#1005898
The tutorial says:
"The Human Resources (HR) Sample Schema is installed as part of the default Oracle9i installation. The HR user is locked by default.
You need to unlock the HR tables and user before you can use the HR sample schema. To unlock the HR tables and user, log in as the SYSTEM user and enter the following command:"
Question: I cannot figure out my password, perhaps I entered something during install but how do I get password for the "SYSTEM" user?

Answer 1

Hi,
Welcome to the forum!
There's no way to find out what a password is.
You can log in as some other user who has DBA privileges (such as SYS), and change SYSTEM's password.
If you've forgotten the SYS password, too, then log into the server as the same user who installed Oracle, or as some user in the ora_dba group. You should be able to log in as SYS. When asked for a password, just press the enter key, like this:
C:> SQLPLUS /NOLOG
SQL> CONNECT SYS AS SYSDBA
Enter password: <enter>
Connected.
SQL>  ALTER USER SYSTEM IDENTIFIED BY new_password;
User altered
SQL>  CONNECT  SYSTEM
Enter password: new_password
Connected
SQL>