在redhat5.5（32bit）上安装好oracle11g数据库软件，然后安装一个数据库，再然后登录数据库，创建scott/tiger测试
首先登录数据库，这里登录时是没有启动数据库的
[oracle@localhost oradata]$ sqlplus / as sysdba
SQL*Plus: Release 11.2.0.1.0 Production on Thu Jul 9 17:54:53 2015
Copyright (c) 1982, 2009, Oracle. All rights reserved.
Connected to an idle instance.
SQL>
创建scott用户，用于学习sql语句,脚本放在$ORACLE_HOME/rdbms/admin/utlsampl.sql
SQL> @?/rdbms/admin/utlsampl.sql
SQL> conn scott/tiger
Connected.
SQL> select * from emp;
EMPNO ENAME JOB MGR HIREDATE SAL COMM DEPTNO
---------- ---------- --------- ---------- --------- ---------- ---------- ----------
7369 SMITH CLERK 7902 17-DEC-80 800 20
7499 ALLEN SALESMAN 7698 20-FEB-81 1600 300 30
7521 WARD SALESMAN 7698 22-FEB-81 1250 500 30
7566 JONES MANAGER 7839 02-APR-81 2975 20
7654 MARTIN SALESMAN 7698 28-SEP-81 1250 1400 30
7698 BLAKE MANAGER 7839 01-MAY-81 2850 30
7782 CLARK MANAGER 7839 09-JUN-81 2450 10
7788 SCOTT ANALYST 7566 19-APR-87 3000 20
7839 KING PRESIDENT 17-NOV-81 5000 10
7844 TURNER SALESMAN 7698 08-SEP-81 1500 0 30
7876 ADAMS CLERK 7788 23-MAY-87 1100 20
7900 JAMES CLERK 7698 03-DEC-81 950 30
7902 FORD ANALYST 7566 03-DEC-81 3000 20
7934 MILLER CLERK 7782 23-JAN-82 1300 10
14 rows selected.
SQL>
正常情况下上面的结果是没有这么整齐，可以在家目录下设置一下显示的变量即可。
环境设置：
[oracle@localhost ~]$ vim login.sql
define_editor=vi
set line 180
set pages 999