DBA入職指南學習筆記4

表空間相關：
http://blog.itpub.net/31535677/viewspace-2154486/

1、創建表空間並指定數據文件
     create tablespace ecologytest datafile 'D:\app\oracle\oradata\ecology\test.dbf'
          size 5M autoextend on maxsize 4G
2、爲表空間增加數據文件
    alter tablespace ecologytest add datafile 'D:\app\oracle\oradata\ecology\test1.dbf' 
          size 5M autoextend on maxsize 4G
3、修改表空間數據文件默認大小
     alter database datafile  'D:\app\oracle\oradata\ecology\test1.dbf' resize 10M
4、創建用戶並指定默認表空間
     create user ecologytest identified by nskfoa default tablespace ecologytest;
5、刪除表空間
     DROP tablespace ecologytest including contents and datafiles cascade constraints;
     

     
數據遷移相關（備份與恢復）
1、創建備份用戶
    create  user baker identified by baker default tablespace baker;
2、創建備份目錄
    create or replace directory expdp_dir as 'D:\bak'
3、備份用戶授權
     grant read,write on directory expdp_dir to baker
4、導出備份數據
     expdp baker/baker directory expdp_dir dumpfile=test.dump logfile=test.log
5、創建導入數據目錄
     create or replace directory impdp_dir as 'D:\bak'
6、授權導入用戶
     grant read,write on directory impdp_dir to baker
7、導入數據
     impdp baker/baker directory expdp_dir dumpfile=test.dump logfile=test.log