在做Oracle數據庫實驗時都會用到一些示例SCHEMA如：HR、OE、SH等，在Oracle11g版本時在DBCA時直接勾選Sample Schemas就可以安裝這些示例SCHEMA，如下圖：

但到了Oracle12.2 版本，也有一個示例Schemas選項卡如下圖所示：

但是數據庫安裝完成後卻還是沒有這些示例SCHEMA，到底是怎麽回事呢？我們來查一下官方文檔：

Starting with Oracle Database 12c Release 2, the latest version of the sample schema scripts are available on GitHub at https://github.com/oracle/db-sample-schemas/releases/latest.

During a complete installation of Oracle Database, the HR schema can be installed either manually or automatically when creating a database using the dbca

從上面的官方文檔中我們可以看到從Oracle12.2版本開始，示例Schemas的腳本被放到了GitHub上，在DBCA安裝時只會安裝hr示例Schema。從文檔中給出的指定地址下載示例Schema安裝腳本：

從README.txt文檔中找到安裝方法，開始安裝：

[email protected]>@mksample

specify password for SYSTEM as parameter 1:
Enter value for 1: 123456

specify password for SYS as parameter 2:
Enter value for 2: 123456

specify password for HR as parameter 3:
Enter value for 3: hr

specify password for OE as parameter 4:
Enter value for 4: oe

specify password for PM as parameter 5:
Enter value for 5: pm

specify password for IX as parameter 6:
Enter value for 6: ix

specify password for  SH as parameter 7:
Enter value for 7: sh

specify password for  BI as parameter 8:
Enter value for 8: bi

specify default tablespace as parameter 9:
Enter value for 9: users

specify temporary tablespace as parameter 10:
Enter value for 10: temp

specify log file directory (including trailing delimiter) as parameter 11:
Enter value for 11: /home/oracle/dbca

specify connect string as parameter 12:
Enter value for 12: localhost:1521/ora12c

Sample Schemas are being created ...

mkdir: cannot create directory ‘/home/oracle/dbca’: File exists

Connected.
DROP USER hr CASCADE
          *
ERROR at line 1:
ORA-01918: user ‘HR‘ does not exist


DROP USER oe CASCADE
          *
ERROR at line 1:
ORA-01918: user ‘OE‘ does not exist


DROP USER pm CASCADE
          *
ERROR at line 1:
ORA-01918: user ‘PM‘ does not exist


DROP USER ix CASCADE
          *
ERROR at line 1:
ORA-01918: user ‘IX‘ does not exist


DROP USER sh CASCADE
          *
ERROR at line 1:
ORA-01918: user ‘SH‘ does not exist


DROP USER bi CASCADE
          *
ERROR at line 1:
ORA-01918: user ‘BI‘ does not exist


Connected.
SP2-0310: unable to open file "__SUB__CWD__/human_resources/hr_main.sql"
Connected.
SP2-0310: unable to open file "__SUB__CWD__/order_entry/oe_main.sql"
Connected.
SP2-0310: unable to open file "__SUB__CWD__/product_media/pm_main.sql"
Connected.
SP2-0310: unable to open file "__SUB__CWD__/info_exchange/ix_main.sql"
Connected.
SP2-0310: unable to open file "__SUB__CWD__/sales_history/sh_main.sql"
Connected.
SP2-0310: unable to open file "__SUB__CWD__/bus_intelligence/bi_main.sql"
Connected.
not spooling currently
SP2-0310: unable to open file "__SUB__CWD__/mkverify.sql"

從上面看到輸出報錯，沒有安裝成功。報錯的是“__SUB__CWD__”沒有找到，打開mksample.sql文件，確實有這個變量，但不知道在哪裏聲明的。

重新查看README.md文檔看到需要把“__SUB__CWD__”這個變量替換為當前路徑，還給出了命令：

[[email protected] db-sample-schemas-12.2.0.1]$ perl -p -i.bak -e ‘s#__SUB__CWD__#‘$(pwd)‘#g‘ *.sql */*.sql */*.dat

執行完上面的腳本後重新安裝示例Schema：

[email protected]>@mksample 123456 123456 hr oe pm ix sh bi users temp /home/oracle/dbca/ 192.168.56.22:1521/ora12c

最終安裝成功：

[email protected]>select username,created from dba_users where created>sysdate-1;

USERNAME                       CREATED
------------------------------ -----------------
OE                             20170816 23:32:22
SH                             20170816 23:34:25
PM                             20170816 23:33:13
IX                             20170816 23:34:12
BI                             20170816 23:36:20
HR                             20170816 23:32:07

參考：http://docs.oracle.com/database/122/COMSC/installing-sample-schemas.htm#COMSC-GUID-B0BEE222-D8B0-4B68-B359-DEA153956EF6

本文出自 “DBA Fighting!” 博客，請務必保留此出處http://hbxztc.blog.51cto.com/1587495/1956932

Oracle 12.2安裝示例schema