Manager User

Manager User

create user test1 identified by test1;
grant connect,create table to test1;
conn cyts_cc/cyts_cc@orcl2000;
create table(
id int)
tablespace user;
ERROR 位于第 1 行:
ORA-01950: 表空间'USERS'中无权限
conn cyts_cc/cyts_cc@orcl2000;
alter user test1 quota 1M on users;
create tab
(id int);
success
alter user test1 account lock;
conn test1/test1@orcl2000;
ERROR:
ORA-28000: the account is locked
1 Database Schema
 a schema is a named collection of objects
 b user is created and a corresponding schema is created
 c user can be associated only with one schema
 d username and schema are often userd interchangely.
2 Checklist for creating users
  a idntfigy tablespaces in which the usr nedds to store objects
  b decide on quotas for each tablespace
  c assign a default tablespace and temporary tablespace.if you do not specify at the time of create user,system tablespace will be the defalut tablespace and temporary.it will affect the performance of the oralce.
  d create user
  e grant privileges and roles to user
  desc dba_users;
  select * from dba_users;
3 Creating a new user:
Database Authentiacation
 set the initial password
  create user aaron
  identified by soccer
  default tablespace data
  temporary tablespace temp
  guota 15m on data
  password expire;

  alter database default temporary tablespace temp;
4 Creating a new user operating System Authentication
  os_authent_prefix initialllization parameter specifies the format of the username
  defauts to ops$
    create user arron
    identified externally
    default tablespace users
    temporary tablespace temp
    quota 15m on data
    password expire;

    conn /
    show parameter os
    os_authent_prefix                    string                           OPS$
    create user ops$test3
      identified externally
      default tablespace us
      temporary tablespace
      quota 10m on users
    thee test2 is an user of os ,which the oracle is installed.
5 Changing user quota on tablespace
 alter user test3 quota 4m on users;
 you cann't grant quota on temp and undotbs.
 
 alter quota 0 on uers -- means that no new table space can be allocated and cannot change the exist object in the tablespaces
6 drop user
 you cannot drop user who has connected to oracle
  drop user (cascade)
7 Obtaining User information
 information about uers can be obtained by qerying the data dictionary
  dba_users
  名称                          
-----------------------------
USERNAME                      
USER_ID                       
PASSWORD                      
ACCOUNT_STATUS                
LOCK_DATE                     
EXPIRY_DATE                   
DEFAULT_TABLESPACE            
TEMPORARY_TABLESPACE          
CREATED                       
PROFILE                       
INITIAL_RSRC_CONSUMER_GROUP   
EXTERNAL_NAME                 
  dba_ts_quotas
   名称          
 ---------------
 TABLESPACE_NAME
 USERNAME      
 BYTES         
 MAX_BYTES     
 BLOCKS        
 MAX_BLOCKS