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今天，接着上次的学习进度继续前进，在此过程中，使用scott用户登录时候显示scott用户不存在，于是进行scott用户的解锁操作
sql> alter user scott account unlock;
alter user scott account unlock
*
第 1 行出现错误:
ora-01918: 用户 ‘scott’ 不存在
由上面的过程可以很轻松的看出，scott用户不存在，然后进行scott用户的创建，网上有好多类似的创建方法，说在某个目录下面可以找到scott.sql文件，然后用相应的命令执行此操作便可以，但是在实际操作的过程中并没有发现该文件，可能是本人安装的数据库中本来就没有的原因，本人主要查找的目录有：
usr/local/oracle/product/rdbms/admin/ 目录，因为本人的数据库就在此目录下，并没有找到，那么就继续构造该文件
首先：在客户机上建立一个txt文件，然后在文件中输入以下内容：
1 rem copyright (c) 1990 by oracle corporation
2 rem name
3 rem utlsampl.sql
4 rem function
5 rem notes
6 rem modified
7 rem gdudey 06/28/95 - modified for desktop seed database
8 rem glumpkin 10/21/92 - renamed from sqlbld.sql
9 rem blinden 07/27/92 - added primary and foreign keys to emp and dept
10 rem rlim 04/29/91 - change char to varchar2
11 rem mmoore 04/08/91 - use unlimited tablespace priv
12 rem pritto 04/04/91 - change sysdate to 13-jul-87
13 rem mendels 12/07/90 - bug 30123;add to_date calls so language independent
14 rem
15 rem
16 rem $header: utlsampl.sql 7020100.1 94/09/23 22:14:24 cli generic<base> $ sqlbld.sql
17 rem
18 set termout off
19 set echo off
20
21 rem congdon invoked in rdbms at build time. 29-dec-1988
22 rem oates: created: 16-feb-83
23
24 grant connect,resource,unlimited tablespace to scott identified by tiger;
25 alter user scott default tablespace users;
26 alter user scott temporary tablespace temp;
27 connect scott/tiger
28 drop table dept;
29 create table dept
30 (deptno number(2) constraint pk_dept primary key,
31 dname varchar2(14) ,
32 loc varchar2(13) ) ;
33 drop table emp;
34 create table emp
35 (empno number(4) constraint pk_emp primary key,
36 ename varchar2(10),
37 job varchar2(9),
38 mgr number(4),
39 hiredate date,
40 sal number(7,2),
41 comm number(7,2),
42 deptno number(2) constraint fk_deptno references dept);
43 insert into dept values
44 (10,'accounting','new york');
45 insert into dept values (20,'research','dallas');
46 insert into dept values
47 (30,'sales','chicago');
48 insert into dept values
49 (40,'operations','boston');
50 insert into emp values
51 (7369,'smith','clerk',7902,to_date('17-12-1980','dd-mm-yyyy'),800,null,20);
52 insert into emp values
53 (7499,'allen','salesman',7698,to_date('20-2-1981','dd-mm-yyyy'),1600,300,30);
54 insert into emp values
55 (7521,'ward','salesman',7698,to_date('22-2-1981','dd-mm-yyyy'),1250,500,30);
56 insert into emp values
57 (7566,'jones','manager',7839,to_date('2-4-1981','dd-mm-yyyy'),2975,null,20);
58 insert into emp values
59 (7654,'martin','salesman',7698,to_date('28-9-1981','dd-mm-yyyy'),1250,1400,30);
60 insert into emp values
61 (7698,'blake','manager',7839,to_date('1-5-1981','dd-mm-yyyy'),2850,null,30);
62 insert into emp values
63 (7782,'clark','manager',7839,to_date('9-6-1981','dd-mm-yyyy'),2450,null,10);
64 insert into emp values
65 (7788,'scott','analyst',7566,to_date('13-jul-87')-85,3000,null,20);
66 insert into emp values
67 (7839,'king','president',null,to_date('17-11-1981','dd-mm-yyyy'),5000,null,10);
68 insert into emp values
69 (7844,'turner','salesman',7698,to_date('8-9-1981','dd-mm-yyyy'),1500,0,30);
70 insert into emp values
71 (7876,'adams','clerk',7788,to_date('13-jul-87')-51,1100,null,20);
72 insert into emp values
73 (7900,'james','clerk',7698,to_date('3-12-1981','dd-mm-yyyy'),950,null,30);
74 insert into emp values
75 (7902,'ford','analyst',7566,to_date('3-12-1981','dd-mm-yyyy'),3000,null,20);
76 insert into emp values
77 (7934,'miller','clerk',7782,to_date('23-1-1982','dd-mm-yyyy'),1300,null,10);
78 drop table bonus;
79 create table bonus
80 (
81 ename varchar2(10) ,
82 job varchar2(9) ,
83 sal number,
84 comm number
85 ) ;
86 drop table salgrade;
87 create table salgrade
88 ( grade number,
89 losal number,
90 hisal number );
91 insert into salgrade values (1,700,1200);
92 insert into salgrade values (2,1201,1400);
93 insert into salgrade values (3,1401,2000);
94 insert into salgrade values (4,2001,3000);
95 insert into salgrade values (5,3001,9999);
96 commit;
97
98 set termout on
99 set echo on
其次，将新建的txt文件保存为.sql文件，注意后缀名隐藏的话打开计算机—-组织—-文件夹选项—-在隐藏已知文件的扩展名前面的√去掉，然后将.txt改成.sql
再次，将刚刚保存好的sql文件拷贝到linux服务器的 usr/local/oracle/product/rdbms/admin/目录下，可以看看创建时间
然后，使用命令：su – oracle -c ‘sqlplus / as sysdba’切换到sqlplus命令行模式，执行以下语句
@$oracle_home/rdbms/admin/scott.sql
执行前：
执行：
执行后：
到此，scott用户的创建已经完成。
现在使用刚刚创建好的scott用户登录，但是发现密码不知道是什么，并不是tiger，然后使用sys用户对scott用户重新设置密码，如下：
最终顺利完成！