scott/tiger一直以来是oracle数据的默认用户，但是跟之前的版本相比，Oracle 12c引入了PDB管理，所以要麻烦一些
下面假设管理员为SYS/Oracle12csys，在orcl实例中有一个可读写的pdb实例名字为pdborcl
把F:apporclproduct12.1.0dbhome_1RDBMSADMINutlsamp.sql;打开
搜索conn找到CONNECT SCOTT/tiger在后面加上@localhost:1521/pdborcl
另存为utlsamppdb.sql
打开cmd命令行
用ORACLE里管理员登录访问PDB
sqlplus SYS/Oracle12csys@localhost:1521/pdborcl AS SYSDBA
登录之后，输入
@F:apporclproduct12.1.0dbhome_1RDBMSADMINutlsamplpdb.sql;
SQL执行完之后会自动退出sqlplus进程
再用scott/tiger登录，记住这个用户名只在pdb内有效，所以后面要接@访问pdb
sqlplus scott/tiger@localhost:1521/pdborcl
由于上面的@SQL脚本已将建好了几个表，所以我们可以用SELECT语句查询一下
SELECT * FROM emp;
好了，大功告成！
附：
utlsamppdb.sql代码
Rem Copyright (c) 1990, 2006, Oracle. All rights reserved.
Rem NAME
REM UTLSAMPL.SQL
Rem FUNCTION
Rem NOTES
Rem MODIFIED
Rem lburgess 04/02/06 - lowercase passwords
Rem menash 02/21/01 - remove unnecessary users for security reasons
Rem gwood 03/23/99 - make all dates Y2K compliant
Rem jbellemo 02/27/97 - dont connect as system
Rem akolk 08/06/96 - bug 368261: Adding date formats
Rem glumpkin 10/21/92 - Renamed from SQLBLD.SQL
Rem blinden 07/27/92 - Added primary and foreign keys to EMP and DEPT
Rem rlim 04/29/91 - change char to varchar2
Rem mmoore 04/08/91 - use unlimited tablespace priv
Rem pritto 04/04/91 - change SYSDATE to 13-JUL-87
Rem Mendels 12/07/90 - bug 30123;add to_date calls so language independent
Rem
rem
rem $Header: utlsampl.sql 02-apr-2006.21:13:01 lburgess Exp $ sqlbld.sql
rem
SET TERMOUT OFF
SET ECHO OFF
rem CONGDON Invoked in RDBMS at build time. 29-DEC-1988
rem OATES: Created: 16-Feb-83
DROP USER SCOTT CASCADE;
DROP USER ADAMS CASCADE;
DROP USER JONES CASCADE;
DROP USER CLARK CASCADE;
DROP USER BLAKE CASCADE;
GRANT CONNECT,RESOURCE,UNLIMITED TABLESPACE TO SCOTT IDENTIFIED BY tiger;
DROP PUBLIC SYNONYM PARTS;
CONNECT SCOTT/tiger@"localhost:1521/pdborcl"
CREATE TABLE DEPT
(DEPTNO NUMBER(2) CONSTRAINT PK_DEPT PRIMARY KEY,
DNAME VARCHAR2(14) ,
LOC VARCHAR2(13) ) ;
CREATE TABLE EMP
(EMPNO NUMBER(4) CONSTRAINT PK_EMP PRIMARY KEY,
ENAME VARCHAR2(10),
JOB VARCHAR2(9),
MGR NUMBER(4),
HIREDATE DATE,
SAL NUMBER(7,2),
COMM NUMBER(7,2),
DEPTNO NUMBER(2) CONSTRAINT FK_DEPTNO REFERENCES DEPT);
INSERT INTO DEPT VALUES
(10,'ACCOUNTING','NEW YORK');
INSERT INTO DEPT VALUES (20,'RESEARCH','DALLAS');
INSERT INTO DEPT VALUES
(30,'SALES','CHICAGO');
INSERT INTO DEPT VALUES
(40,'OPERATIONS','BOSTON');
INSERT INTO EMP VALUES
(7369,'SMITH','CLERK',7902,to_date('17-12-1980','dd-mm-yyyy'),800,NULL,20);
INSERT INTO EMP VALUES
(7499,'ALLEN','SALESMAN',7698,to_date('20-2-1981','dd-mm-yyyy'),1600,300,30);
INSERT INTO EMP VALUES
(7521,'WARD','SALESMAN',7698,to_date('22-2-1981','dd-mm-yyyy'),1250,500,30);
INSERT INTO EMP VALUES
(7566,'JONES','MANAGER',7839,to_date('2-4-1981','dd-mm-yyyy'),2975,NULL,20);
INSERT INTO EMP VALUES
(7654,'MARTIN','SALESMAN',7698,to_date('28-9-1981','dd-mm-yyyy'),1250,1400,30);
INSERT INTO EMP VALUES
(7698,'BLAKE','MANAGER',7839,to_date('1-5-1981','dd-mm-yyyy'),2850,NULL,30);
INSERT INTO EMP VALUES
(7782,'CLARK','MANAGER',7839,to_date('9-6-1981','dd-mm-yyyy'),2450,NULL,10);
INSERT INTO EMP VALUES
(7788,'SCOTT','ANALYST',7566,to_date('13-JUL-87','dd-mm-rr')-85,3000,NULL,20);
INSERT INTO EMP VALUES
(7839,'KING','PRESIDENT',NULL,to_date('17-11-1981','dd-mm-yyyy'),5000,NULL,10);
INSERT INTO EMP VALUES
(7844,'TURNER','SALESMAN',7698,to_date('8-9-1981','dd-mm-yyyy'),1500,0,30);
INSERT INTO EMP VALUES
(7876,'ADAMS','CLERK',7788,to_date('13-JUL-87', 'dd-mm-rr')-51,1100,NULL,20);
INSERT INTO EMP VALUES
(7900,'JAMES','CLERK',7698,to_date('3-12-1981','dd-mm-yyyy'),950,NULL,30);
INSERT INTO EMP VALUES
(7902,'FORD','ANALYST',7566,to_date('3-12-1981','dd-mm-yyyy'),3000,NULL,20);
INSERT INTO EMP VALUES
(7934,'MILLER','CLERK',7782,to_date('23-1-1982','dd-mm-yyyy'),1300,NULL,10);
CREATE TABLE BONUS
(
ENAME VARCHAR2(10) ,
JOB VARCHAR2(9) ,
SAL NUMBER,
COMM NUMBER
) ;
CREATE TABLE SALGRADE
( GRADE NUMBER,
LOSAL NUMBER,
HISAL NUMBER );
INSERT INTO SALGRADE VALUES (1,700,1200);
INSERT INTO SALGRADE VALUES (2,1201,1400);
INSERT INTO SALGRADE VALUES (3,1401,2000);
INSERT INTO SALGRADE VALUES (4,2001,3000);
INSERT INTO SALGRADE VALUES (5,3001,9999);
COMMIT;
EXIT