Oracle基本操作

1、普通用户登录：
方式一：
C:\Users\Administrator>sqlplus scott/scott(用户名/密码)

SQL*Plus: Release 11.2.0.1.0 Production on 星期五 8月 11 21:53:53 2017

Copyright (c) 1982, 2010, Oracle.  All rights reserved.

连接到:
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
方式二：
C:\Users\Administrator>sqlplus scott/scott

SQL*Plus: Release 11.2.0.1.0 Production on 星期五 8月 11 21:53:53 2017

Copyright (c) 1982, 2010, Oracle.  All rights reserved.

连接到:
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
2、超级用户登录
C:\Users\Administrator>sqlplus /nolog

SQL*Plus: Release 11.2.0.1.0 Production on 星期五 8月 11 22:18:04 2017

Copyright (c) 1982, 2010, Oracle.  All rights reserved.

SQL> connect /as sysdba
已连接。
3、退出登录
SQL> quit
从 Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options 断开
4、查看当前用户下的所有表
SQL> select * from tab;

TNAME                          TABTYPE  CLUSTERID
------------------------------ ------- ----------
BONUS                          TABLE
DEPT                           TABLE
EMP                            TABLE
SALGRADE                       TABLE
5、查询表的所有记录
SQL> select * from dept;

DEPTNO DNAME          LOC
---------- -------------- -------------
10 ACCOUNTING     NEW YORK
20 RESEARCH       DALLAS
30 SALES          CHICAGO
40 OPERATIONS     BOSTON
6、查看表结构
SQL> desc dept;
名称                                      是否为空? 类型
----------------------------------------- -------- ----------------------------
DEPTNO                                    NOT NULL NUMBER(2)
DNAME                                              VARCHAR2(14)
LOC
7、设置行宽
SQL> set linesize 150;
8、设置页大小
SQL> set pagesize 120;
9、设置列宽
SQL> col deptno for 99999999;
10、清屏
SQL> host cls;
11、修改SQL语句
SQL> edit;