oracle數據庫語法大全

--鎖定賬戶
Alter user scott account lock;

--解鎖賬戶
Alter user scott account unlock;

--創建用戶及密碼
create user mm identified by 123;

--修改用戶密碼
alter user mm identified by bbs;

--查詢用戶mm的默認表空間
select username,default_tablespace from dba_users;

--創建表空間
Create tablespace worktbs
Datafile 'D:\ljk\worktbs.dbf'
size 10M autoextend on;

--分配表空間
alter user mm default tablespace worktbs;

--給用戶分配系統權限
grant create session,create table,create view ,create sequence,unlimited tablespace to mm;

--查詢所有權限
select * from session_privs;

--刪除建表權限
revoke create table from mm;

--給予建表權限
grant create table to mm;

create table workmm(
id number not null
);

--授權角色權限（conncet resource dba ）
grant dba to scott;

--查看所有用戶
select * from dba_users;
select * from all_users;
select * from user_users;

--查看用戶系統權限
select * from dba_sys_privs;
select * from session_privs;
select * from user_sys_privs;

--查看用戶對象權限
select * from dba_tab_privs;
select * from all_tab_privs;
select * from user_tab_privs;

--查看所有角色
select * from dab_roles;

--查看用戶所擁有的角色
select * from dba_role_privs;
select * from user_role_privs;

--收回權限
Revoke dba from scott;

--刪除用戶
drop user mm cascade;

--刪除表空間
drop Tablespace worktbs;