oracle11g導入/導出數據庫

導出
    1、創建目錄
        sqlplus / as sysdba
        create directory dbDir as ‘d:\oralce_sdic_backup\‘;
        grant read,write on directory dbDir to sdic;
    2、cmd導出
        expdp sdic/hymake528sdic schemas=sdic dumpfile=oralce_sdic_backup_%date:~0,4%%date:~5,2%%date:~8,2%.dmp logfile=
 
oralce_sdic_backup_%date:~0,4%%date:~5,2%%date:~8,2%.log  directory=dbDir
導入
    1、刪除原用戶、表空間
        sqlplus / as sysdba;
        drop user sdic cascade;
        drop tablespace sdic_tablespace including contents and datafiles;
    2、創建用戶、表空間
        sqlplus / as sysdba
        create tablespace sdic_tablespace datafile ‘
 
E:/soft/oracle11g_data/sdic1.dbf‘ size 10g autoextend on next 5m;
        alter tablespace sdic_tablespace  add datafile  ‘E:/soft/oracle11g_data/sdic2.dbf‘ size 10g autoextend on next 5m;
        create user sdic identified by hymake528sdic;
        grant connect,resource,dba to sdic;
        alter user sdic default
 
 tablespace sdic_tablespace;
    3、創建目錄
        create directory dbDir as ‘E:\soft\oracle11g_bak‘;
        grant read,write on directory dbDir to sdic;
    4、cmd導入
　　　　　impdp sdic/hymake528sdic DIRECTORY=dbDir DUMPFILE=ORALCE_SDIC_BACKUP_20171207.DMP REMAP_SCHEMA=sdic:sdic REMAP_TABLESPACE=USERS:sdic_tablespace table_exists_action=append full=y logfile=imp20171207.log
   
說明：
1、導出的dumpfile=oralce_sdic_backup_%date:~0,4%%date:~5,2%%date:~8,2%.dmp logfile=oralce_sdic_backup_%date:~0,4%%date:~5,2%%date:~8,2%.log
　  %date:~0,4%%date:~5,2%%date:~8,2%這裏是取時間yyyyMMdd的方法。
2、alter tablespace sdic_tablespace  add datafile  ‘E:/soft/oracle11g_data/sdic2.dbf‘ size 10g autoextend on next 5m;
　　這是追加了一個數據庫文件，當數據庫大於32g的時候，一個數據庫文件存放不下。
3、刪除用戶失敗處理

　　////如果出現 ORA-00604: 遞歸 SQL 級別 1 出現錯誤
　　////或出現ORA-01940：無法刪除當前連接的用戶
　　////就重啟數據庫再drop
　　////SQL> shutdown immediate
　　////SQL> startup

oracle11g expdp/impdp數據庫