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2025-02-24 Update From: SLTechnology News&Howtos shulou NAV: SLTechnology News&Howtos > Database >
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Shulou(Shulou.com)06/01 Report--
My oracle notes and the new knowledge I have learned in the future are new in this post.
Drop user ewedu cascade;-- deletes all data associated with ewedu
Create a temporary tablespace
CREATE TEMPORARY TABLESPACE EWEDU_TEMP
TEMPFILE'e:\\ bw\\ EWEDU_TEMP.dbf'
SIZE 32M
AUTOEXTEND ON
NEXT 32M MAXSIZE 2048M
EXTENT MANAGEMENT LOCAL; creates user tablespaces
Create user tablespace
CREATE TABLESPACE EWEDU_DATA
LOGGING
DATAFILE'E:\\ bw\\ EWEDU_DATA.DBF'
SIZE 32M
AUTOEXTEND ON
NEXT 32M MAXSIZE 2048M
EXTENT MANAGEMENT LOCAL; creates users and formulates tablespaces
Imp system/hack520 file=E:\\ Octave\\ bawei.dmp fromuser=ewedu touser=ewedu
You must first query the tablespace and the tablespace where the database is located.
Select tablespace_name from user_tablespaces
Know the name of the table space and display all tables included in the table space.
Select * from all_tables where tablespace_name=' table space name 'know the table name
Check which tablespace the table belongs to
Select tablespace_name,table_name from user_tables where table_name='emp'
Select * from user_tables where table_name='BW_XY_CLASSCOMMITTEE'
-- connect to the local instance
-- conn / @ orcl as sysdba
Conn sys/hack520 as sysdba
-- Delete user "oauser"
Drop user oauser cascade
-- delete tablespace "oauser"
Drop TEMPORARY TABLESPACE bwie_temp
Drop tablespace beie_TEMP
Commit
-- drop table SYS_CONDES
CREATE USER EWEDU IDENTIFIED BY EWEDU_DATA
DEFAULT TABLESPACE EWEDU_DATA
TEMPORARY TABLESPACE EWEDU_TEMP; grants permissions to users
GRANT
CREATE SESSION, CREATE ANY TABLE, CREATE ANY VIEW, CREATE ANY INDEX
, CREATE ANY PROCEDURE
ALTER ANY TABLE, ALTER ANY PROCEDURE
DROP ANY TABLE, DROP ANY VIEW, DROP ANY INDEX, DROP ANY
PROCEDURE
SELECT ANY TABLE, INSERT ANY TABLE, UPDATE ANY TABLE, DELETE ANY
TABLE
TO username; grants the role of role to username, that is, to enable the user username to manage and use
Resources owned by role
Grant dba to username; assigns all permissions to the user username
GRANT role TO username
View user permissions
Select * from role_sys_privs where role='RESOURCE'
View all users
SELECT * FROM DBA_USERS
SELECT * FROM ALL_USERS
SELECT * FROM USER_USERS; to view user's system permissions
SELECT * FROM DBA_SYS_PRIVS
SELECT * FROM USER_SYS_PRIVS; to view user object or role permissions
SELECT * FROM DBA_TAB_PRIVS
SELECT * FROM ALL_TAB_PRIVS
SELECT * FROM USER_TAB_PRIVS; view all roles
SELECT * FROM DBA_ROLES; to view roles owned by a user or role
SELECT * FROM DBA_ROLE_PRIVS
SELECT * FROM USER_ROLE_PRIVS
-- connect to the local instance
Conn sys/hack520 as sysdba
-- create tablespace "DATA"
CREATE TABLESPACE NEWER_DATA DATAFILE'G:\\ NEWER_DATA.DBF' SIZE 100m reuse AUTOEXTEND ON
NEXT 5M MAXSIZE UNLIMITED
-- create tablespace "TEMP"
CREATE TEMPORARY TABLESPACE NEWER_TEMP TEMPFILE'G:\\ NEWER_TEMP.DBF' SIZE 100m reuse
AUTOEXTEND ON NEXT 5M MAXSIZE UNLIMITED
-- create user "TEMP"
CREATE USER NEWER PROFILE DEFAULT IDENTIFIED BY NEWER DEFAULT TABLESPACE NEWER_DATA
TEMPORARY TABLESPACE NEWER_TEMP ACCOUNT UNLOCK
-- authorize the user "newer"
GRANT DBA TO NEWER
Commit
Exit
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