之前安装了12c版本，最近做练习发现怎么没有scott用户和11g自带的emp，dept等等的表。于是尝试解锁用户，发现用户不存在
SQL> alter user scott account unlock;alter user scott account unlock *ERROR at line 1:ORA-01918: user 'SCOTT' does not exist
手动创建用户，出错，和11g不太一样
SQL> create user scott identified by oracle;create user scott identified by oracle *ERROR at line 1:ORA-65096: invalid common user or role name
原因和pdb，cdb有关。pdb和cdb是12c的新特性，没有具体学过，不知道是神马意思，不过可以参考这篇文章：
查看错误ORA--65096
SQL> !oerr ora 6509665096, 00000, "invalid common user or role name"// *Cause: An attempt was made to create a common user or role with a name// that wass not valid for common users or roles. In addition to // the usual rules for user and role names, common user and role // names must start with C## or c## and consist only of ASCII // characters.// *Action: Specify a valid common user or role name.//
在CDB中用户得以C##开头。
试了一下在sql中@/u01/app/oracle/product/12.1.0/db_1/rdbms/admin/utlsampl.sql，也不行，因为里面的用户名有问题于是自己改写了这个脚本，步骤如下：
当前路径
[oracle@localhost ~]$ pwd/home/oracle复制一个副本到当前目录[oracle@localhost ~]$ cp /u01/app/oracle/product/12.1.0/db_1/rdbms/admin/utlsampl.sql .重命名文件为scott.sql：[oracle@localhost ~]$ mv utlsampl.sql scott.sql修改scott.sql：主要是将scott用户相关的语句改为c##scott，删除最后的EXIT，修改完的scott.sql如下：
scott.sql
SET TERMOUT OFFSET ECHO OFFDROP USER C##SCOTT CASCADE;create user c##scott identified by tiger;grant connect,resource,unlimited tablespace to c##scott container=all;alter user c##scott default tablespace users;alter user c##scott temporary tablespace temp;CONNECT C##SCOTT/tigerCREATE 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; 测试：
sqlplus / as sysdbaSQL> @/home/oracle/scott.sql;SQL> conn c##scott/tigerConnected.SQL> select table_name from user_tables;TABLE_NAME--------------------------------------------------------------------------------SALGRADEBONUSDEPTEMPSQL> select * from SALGRADE; GRADE LOSAL HISAL---------- ---------- ---------- 1 700 1200 2 1201 1400 3 1401 2000 4 2001 3000 5 3001 9999
ok!