最近有时间学习oracle了，把学习的过程整理出来，漫漫学习路，现在才刚刚起步。

1.#su - oracle

2.启动监听

$ lsnrctl start 

3.启动em

$ emctl start dbconsole

4.启动iSQL*Plus

$ isqlplusctl start

5.连接数据库

[oracle@localhost ~]$ sqlplus / as sysdba

SQL*Plus: Release 10.2.0.1.0 - Production on Mon Dec 22 07:01:37 2014

Copyright (c) 1982, 2005, Oracle.  All rights reserved.

Connected to an idle instance.

SQL> 

6.启动数据库

SQL> startup;

7.创建用户bob，密码admin

SQL>create user bob identified by admin;

8.把dba权限给bob

SQL>grant dba to bob;

9.取消授权

SQL>revoke dba from bob；

10.删除用户,如果用户已经有对象了（如TABLE，VIEW等)需要带cascade

SQL>drop user bob cascade;

11.删除 ORACLE表空间

SQL>drop tablespace tablespacename including contents and datafiles;

12.解锁oracle用户bob

SQL>show user;

USER is "SYS"

SQL>alter user bob account unlock;

SQL> conn bob/qazwsx;

Connected.

SQL> show user;

USER is "BOB"