在做Oracle数据库实验时都会用到一些示例SCHEMA如：HR、OE、SH等，在Oracle11g版本时在DBCA时直接勾选Sample Schemas就可以安装这些示例SCHEMA，如下图：
Starting with Oracle Database 12c Release 2,the latest version of the sample schema scripts are available on GitHub athttps://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 thedbcaoption. All the other sample schemas must be installed manually via the scripts available on GitHub.
从上面的官方文档中我们可以看到从Oracle12.2版本开始，示例Schemas的脚本被放到了GitHub上，在DBCA安装时只会安装hr示例Schema。从文档中给出的指定地址下载示例Schema安装脚本：
从README.txt文档中找到安装方法，开始安装：
sys@ORA12C>@mksample specifypasswordforSYSTEMasparameter1: Entervaluefor1:123456 specifypasswordforSYSasparameter2: Entervaluefor2:123456 specifypasswordforHRasparameter3: Entervaluefor3:hr specifypasswordforOEasparameter4: Entervaluefor4:oe specifypasswordforPMasparameter5: Entervaluefor5:pm specifypasswordforIXasparameter6: Entervaluefor6:ix specifypasswordforSHasparameter7: Entervaluefor7:sh specifypasswordforBIasparameter8: Entervaluefor8:bi specifydefaulttablespaceasparameter9: Entervaluefor9:users specifytemporarytablespaceasparameter10: Entervaluefor10:temp specifylogfiledirectory(includingtrailingdelimiter)asparameter11: Entervaluefor11:/home/oracle/dbca specifyconnectstringasparameter12: Entervaluefor12:localhost:1521/ora12c SampleSchemasarebeingcreated... mkdir:cannotcreatedirectory‘/home/oracle/dbca’:Fileexists Connected. DROPUSERhrCASCADE * ERRORatline1: ORA-01918:user'HR'doesnotexist DROPUSERoeCASCADE * ERRORatline1: ORA-01918:user'OE'doesnotexist DROPUSERpmCASCADE * ERRORatline1: ORA-01918:user'PM'doesnotexist DROPUSERixCASCADE * ERRORatline1: ORA-01918:user'IX'doesnotexist DROPUSERshCASCADE * ERRORatline1: ORA-01918:user'SH'doesnotexist DROPUSERbiCASCADE * ERRORatline1: ORA-01918:user'BI'doesnotexist Connected. SP2-0310:unabletoopenfile"__SUB__CWD__/human_resources/hr_main.sql" Connected. SP2-0310:unabletoopenfile"__SUB__CWD__/order_entry/oe_main.sql" Connected. SP2-0310:unabletoopenfile"__SUB__CWD__/product_media/pm_main.sql" Connected. SP2-0310:unabletoopenfile"__SUB__CWD__/info_exchange/ix_main.sql" Connected. SP2-0310:unabletoopenfile"__SUB__CWD__/sales_history/sh_main.sql" Connected. SP2-0310:unabletoopenfile"__SUB__CWD__/bus_intelligence/bi_main.sql" Connected. notspoolingcurrently SP2-0310:unabletoopenfile"__SUB__CWD__/mkverify.sql"
从上面看到输出报错，没有安装成功。报错的是“__SUB__CWD__”没有找到，打开mksample.sql文件，确实有这个变量，但不知道在哪里声明的。
重新查看README.md文档看到需要把“__SUB__CWD__”这个变量替换为当前路径，还给出了命令：
[oracle@rhel7db-sample-schemas-12.2.0.1]$perl-p-i.bak-e's#__SUB__CWD__#'$(pwd)'#g'*.sql*/*.sql*/*.dat
执行完上面的脚本后重新安装示例Schema：
sys@ORA12C>@mksample123456123456hroepmixshbiuserstemp/home/oracle/dbca/192.168.56.22:1521/ora12c
最终安装成功：
system@ORA12C>selectusername,createdfromdba_userswherecreated>sysdate-1; USERNAMECREATED ----------------------------------------------- OE2017081623:32:22 SH2017081623:34:25 PM2017081623:33:13 IX2017081623:34:12 BI2017081623:36:20 HR2017081623:32:07
