Как установить примеры схем?

Я изучаю Oracle 12c по книге Oracle Database 12c Установите, настройте и обслуживайте как профессионал. Я установил базу данных, но не нашел образцы схем (таблицы типа «Клиенты», «Продажи», «Продукты...»). Итак, я загружаю Oracle Database 12c Release 1 Examples (12.1.0.1.0) для Microsoft Windows (x64) и установил его; но я до сих пор не знаю, как получить образцы таблиц.

Из SQL Developer я запустил mksample.sql, чтобы установить все примеры схем, но получил:

Error starting at line 119 in command:
DROP USER hr CASCADE
SQL Error: ORA-01918: user 'HR' does not exist
01918. 00000 -  "user '%s' does not exist"
*Cause:    User does not exist in the system.
*Action:   Verify the user name is correct.

Error starting at line 120 in command:
DROP USER oe CASCADE
Error report:
SQL Error: ORA-01918: user 'OE' does not exist
01918. 00000 -  "user '%s' does not exist"
*Cause:    User does not exist in the system.
*Action:   Verify the user name is correct.

Error starting at line 121 in command:
DROP USER pm CASCADE
Error report:
SQL Error: ORA-01918: user 'PM' does not exist
01918. 00000 -  "user '%s' does not exist"
*Cause:    User does not exist in the system.
*Action:   Verify the user name is correct.
....

Как я могу это исправить?

обновление: когда я запускаю hr_main.sql, я получаю это после того, как ввожу пароль 5 раз:

specify password for HR as parameter 1:
specify default tablespeace for HR as parameter 2:
specify temporary tablespace for HR as parameter 3:
specify password for SYS as parameter 4:
specify log path as parameter 5:

Error starting at line 63 in command:
DROP USER hr CASCADE
Error report:
SQL Error: ORA-01918: user 'HR' does not exist
01918. 00000 -  "user '%s' does not exist"
*Cause:    User does not exist in the system.
*Action:   Verify the user name is correct.

Error starting at line 72 in command:
CREATE USER hr IDENTIFIED BY oracle12c
Error at Command Line:72 Column:13
Error report:
SQL Error: ORA-65096: invalid common user or role name


Error starting at line 74 in command:
ALTER USER hr DEFAULT TABLESPACE &tbs
              QUOTA UNLIMITED ON &tbs
Error report:
SQL Error: ORA-01918: user 'HR' does not exist
01918. 00000 -  "user '%s' does not exist"
*Cause:    User does not exist in the system.
*Action:   Verify the user name is correct.

Error starting at line 77 in command:
ALTER USER hr TEMPORARY TABLESPACE &ttbs
Error report:
SQL Error: ORA-01918: user 'HR' does not exist
01918. 00000 -  "user '%s' does not exist"
*Cause:    User does not exist in the system.
*Action:   Verify the user name is correct.

Error starting at line 79 in command:
GRANT CREATE SESSION, CREATE VIEW, ALTER SESSION, CREATE SEQUENCE TO hr
Error report:
SQL Error: ORA-01917: user or role 'HR' does not exist
01917. 00000 -  "user or role '%s' does not exist"
*Cause:    There is not a user or role by that name.
*Action:   Re-specify the name.

Error starting at line 80 in command:
GRANT CREATE SYNONYM, CREATE DATABASE LINK, RESOURCE , UNLIMITED TABLESPACE TO hr
Error report:
SQL Error: ORA-01917: user or role 'HR' does not exist
01917. 00000 -  "user or role '%s' does not exist"
*Cause:    There is not a user or role by that name.
*Action:   Re-specify the name.
Connected

Error starting at line 87 in command:
GRANT execute ON sys.dbms_stats TO hr
Error report:
SQL Error: ORA-01917: user or role 'HR' does not exist
01917. 00000 -  "user or role '%s' does not exist"
*Cause:    There is not a user or role by that name.
*Action:   Re-specify the name.
Error starting at line 93 in command:
CONNECT hr/&pass
Error report:
Connection Failed
Commit