今天根据之前博客如何使用github安装Oracle 数据库Sample Schema （示例Schema） ，发现居然报错了。
从网站上看了下，发现确实有些变化，现描述如下。
第一个变化是OE和PM两个Schema进入归档状态，目前建议使用的是HR，SH和CO。
第二个变化是以前的一键式安装所有schema不支持了，必须逐个schema安装。
对于HR，SH和CO的安装和卸载，用以下脚本就好：
[oracle@ocp19c db-sample-schemas]$ find . -name *install*.sql
./sales_history/sh_install.sql
./sales_history/sh_uninstall.sql
./human_resources/hr_install.sql
./human_resources/hr_uninstall.sql
./customer_orders/co_install.sql
./customer_orders/co_uninstall.sql
一个需要特别注意的地方是，安装必须使用SQLcl，也就是sql命令而非sqlplus。因为加载命令用了sql的LOAD，而非SQL Loader。否则，看似成功，你会发现表中没有数据，例如SH.sales表，应该有918843条数据。
sql登录成功后，记得切换路径到安装目录，否则会报找不到安装文件。例如安装SH schema时：
$ sql system/$SYSPWD@orclpdb1
SQLcl: Release 21.4 Production on Tue May 23 10:32:24 2023
Copyright (c) 1982, 2023, Oracle. All rights reserved.
Last Successful login time: Tue May 23 2023 10:32:26 +00:00
Connected to:
Oracle Database 19c EE Extreme Perf Release 19.0.0.0.0 - Production
Version 19.19.0.0.0
SQL> pwd
/u01/app/oracle/product/19.0.0.0/dbhome_1/sqldeveloper/sqldeveloper/bin/
SQL> cd /home/oracle/db-sample-schemas/sales_history
SQL> pwd
/home/oracle/db-sample-schemas/sales_history
例如安装SH Sample Schema，看到以下输出，就表示安装成功了：
Installation verification
____________________________
Verification:
Table provided actual
_____________________________ ___________ _________
channels 5 5
costs 82112 82112
countries 35 35
customers 55500 55500
products 72 72
promotions 503 503
sales 918843 918843
times 1826 1826
supplementary_demographics 4500 4500
Thank you!
___________________________________________________________
The installation of the sample schema is now finished.
Please check the installation verification output above.
You will now be disconnected from the database.
Thank you for using Oracle Database!
Disconnected from Oracle Database 19c EE Extreme Perf Release 19.0.0.0.0 - Production
安装HR Schema时的成功输出：
Installation verification
____________________________
Verification:
Table provided actual
______________ ___________ _________
regions 5 5
countries 25 25
departments 27 27
locations 23 23
employees 107 107
jobs 19 19
job_history 10 10
Thank you!
安装CO成功时的输出：
Installation verification
____________________________
Verification:
Table provided actual
______________ ___________ _________
customers 392 392
stores 23 23
products 46 46
orders 1950 1950
shipments 1892 1892
order_items 3914 3914
inventory 566 566
Thank you!
所有的Sample Schema版本历史可参见这里。