從Oracle數據庫擦除數據

Question

我正在運行一些測試以將數據從一個數據庫遷移到另一個數據庫，爲此我需要刪除並重新創建相同的表，視圖和其他內容。那麼什麼是Oracle中的SQL語句來刪除所有內容（刪除表，視圖，序列，函數，過程等）。我知道我可以使用「DROP」，但有時候這樣做不夠方便。

感謝

Answer 1

最簡單的方法是刪除模式的對象都關聯到：

DROP USER [schema name] CASCADE 

核彈從軌道 - 這是可以肯定的唯一途徑;）

爲您提供的腳本，您可以運行這些查詢，而無需使用以下匿名過程生成中間腳本：

BEGIN 

    --Bye Views! 
    FOR i IN (SELECT uv.view_name 
       FROM USER_VIEWS uv) LOOP 
    EXECUTE IMMEDIATE 'drop view '|| i.view_name ||''; 
    END LOOP; 

    --Bye Sequences! 
    FOR i IN (SELECT us.sequence_name 
       FROM USER_SEQUENCES us) LOOP 
    EXECUTE IMMEDIATE 'drop sequence '|| i.sequence_name ||''; 
    END LOOP; 

    --Bye Tables! 
    FOR i IN (SELECT ut.table_name 
       FROM USER_TABLES ut) LOOP 
    EXECUTE IMMEDIATE 'drop table '|| i.table_name ||' CASCADE CONSTRAINTS '; 
    END LOOP; 

    --Bye Procedures/Functions/Packages! 
    FOR i IN (SELECT us.name, 
        us.type 
       FROM USER_SOURCE us 
      WHERE us.type IN ('PROCEDURE', 'FUNCTION', 'PACKAGE') 
      GROUP BY us.name, us.type) LOOP 
    EXECUTE IMMEDIATE 'drop '|| i.type ||' '|| i.name ||''; 
    END LOOP; 

    --Bye Synonyms! 
    FOR i IN (SELECT ut.synonym_name 
       FROM USER_SYNONYMS us 
      WHERE us.synonym_name NOT LIKE 'sta%' 
       AND us.synonym_name LIKE 's_%') LOOP 
    EXECUTE IMMEDIATE 'drop synonym '|| i.synonym_name ||''; 
    END LOOP; 

END; 

Answer 2

我一直在方案之前，我做的是恢復備份和覆蓋當前的架構。

這樣我就可以回到原點了。

Answer 3

我已經found this script在哪裏你可以生成腳本來放棄一切，但如果我使用一些通用的東西，那將是非常棒的。

set feedback off 
set pagesize 0 
spool AllObjectsDrop.sql 
select 'drop view '||view_name||';' from user_views; 
select distinct 'drop sequence '||sequence_name|| ';'from user_sequences; 
select distinct 'drop table '||table_name|| ';'from user_tables; 
select distinct 'drop procedure '||name|| ';'from user_source where type = 'procedure'; 
select distinct 'drop function '||name|| ';'from user_source where type = 'function'; 
select distinct 'drop package '||name|| ';'from user_source where type = 'package'; 
select 'drop synonym '||synonym_name||';' from user_synonyms where synonym_name not like 'sta%' and synonym_name like 's_%' 
spool off 

Answer 4

如果您有企業版，您應該查看restore points and Flashback Database。

DROP USER ... CASCADE很好，如果你有特權和一個快速的腳本來重新創建用戶。

Answer 5

在不能簡單地拖放模式，我使用以下腳本：

DECLARE 
CURSOR c_get_objects IS 
    SELECT object_type, '"' || object_name || '"' || DECODE(object_type, 'TABLE', ' cascade constraints', NULL) obj_name 
    FROM user_objects 
    WHERE object_type IN ('TABLE', 'VIEW', 'PACKAGE', 'SEQUENCE', 'PROCEDURE', 'FUNCTION', 'SYNONYM', 'MATERIALIZED VIEW') 
    ORDER BY object_type; 
CURSOR c_get_objects_type IS 
    SELECT object_type, '"' || object_name || '"' obj_name FROM user_objects WHERE object_type IN ('TYPE'); 
BEGIN 
FOR object_rec IN c_get_objects 
LOOP 
    EXECUTE IMMEDIATE ('drop ' || object_rec.object_type || ' ' || object_rec.obj_name); 
END LOOP; 
FOR object_rec IN c_get_objects_type 
LOOP 
    EXECUTE IMMEDIATE ('drop ' || object_rec.object_type || ' ' || object_rec.obj_name || ' force'); 
END LOOP; 
END; 
/