oracle常用命令

--清除垃圾信息

PURGE recyclebin;

--查询垃圾信息

SELECT t.object_name,t.type ,t.original_name FROM user_recyclebin t;

--删除表

drop table example;

--彻底删除表不进入Recycle

drop table example purge;

--创建表

CREATE TABLE admin(
id VARCHAR(40) NOT NULL PRIMARY KEY,
user_name VARCHAR(255),
user_passwd VARCHAR(255),
user_level VARCHAR(50)
);

--查询表

select a.id,a.user_name,a.user_passwd,a.user_level from admin a;

--创建空间

create tablespace shop datafile '/u01/app/oracle/oradata/shop/shop.dbf' size 50M default storage (initial 500K Next 500K minextents 1 maxextents unlimited pctincrease 0);

--Oracle创建用户权限
--创建用户

create user shopname identified by shoppasswd default tablespace shop;

--授权

grant resource,connect,dba to shopname;

--删除表空间

drop tablespace shop including contents and datafiles;

--删除用户

drop user shopname cascade

--查询所有用户

select username from dba_users;

--授予DBA权限

grant dba to shopname;

--授予不限制的表空间

grant unlimited tablespace to shopname;

--授予查询任何表

grant select any table to shopname;

--授予 查询 任何字典

grant select any dictionary to shopname;