Oracle 12c 数据库做了很大的改变，集成了SQLDeveloper,可以方便大家的使用，scott用户已经被移除了，需要的话可以自己创建，并授予权限。这个稍微有点基础的话都是很简单的……按着步骤来就可以。
-- 使用超级管理员登录 CONN sys/change_on_install AS SYSDBA ; -- 创建c##scott用户 CREATE USER c##scott IDENTIFIED BY tiger ; -- 为用户授权 GRANT CONNECT,RESOURCE,UNLIMITED TABLESPACE TO c##scott CONTAINER=ALL ; -- 设置用户使用的表空间 ALTER USER c##scott DEFAULT TABLESPACE USERS; ALTER USER c##scott TEMPORARY TABLESPACE TEMP; -- 使用c##scott用户登录 CONNECT c##scott/tiger
==退出plus 重新登录一次
建议使用sql devploer 链接scott执行以下脚本。
-- 创建数据表 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 ); CREATE TABLE bonus ( enamE VARCHAR2(10) , job VARCHAR2(9) , sal NUMBER, comm NUMBER ) ; CREATE TABLE salgrade ( grade NUMBER, losal NUMBER, hisal NUMBER ); -- 插入测试数据 —— 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'); -- 插入测试数据 —— emp 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('13-07-87','dd-mm-yyyy')-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('13-07-87','dd-mm-yyyy')-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); -- 插入测试数据 —— salgrade 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); -- 事务提交 COMMIT;
范例：查询emp表数据（指令之后要使用“;”完结） SELECT * FROM emp ;
范例：使用ed命令调用本机记事本程序 ED mldn
范例：使用SYS用户登录 CONN sys/change_on_install AS SYSDBA ;
范例：在sys用户中查询c##scott.emp表数据 SELECT * FROM c##scott.emp ;
范例：使用sys用户以管理员方式登录 CONN sys/change_on_install AS SYSDBA ;
范例：将CDB的切换到PDB ALTER SESSION SET CONTAINER=pdbmldn ;
范例：打开PDBMLDN可插入数据库 ALTER DATABASE pdbmldn OPEN ;
范例：通过CDB打开PDBMLDN可插入数据库 ALTER PLUGGABLE DATABASE pdbmldn OPEN ;
范例：在PDBMLDN下察看scott与sh用户是否存在 SELECT username FROM dba_users WHERE username='SCOTT' OR username='SH' ;
范例：查询scott用户 SELECT * FROM scott.emp ;
范例：切换回CDB容器 ALTER SESSION SET CONTAINER=CDB$ROOT ;
范例：察看dept的表结构 DESC dept ;
范例：使用copy指令 HOST COPY D:mldn.sql D:hello.sql
范例：查询emp表 SELECT * FROM emp ;
