Question

我正在运行一些测试来将数据从一个数据库迁移到另一个数据库，为此我需要删除并重新创建相同的表，视图和其他内容。那么Oracle中用于擦除所有内容的SQL语句是什么（删除表，视图，序列，函数，过程等）。我知道我可以使用“DROP”但有时候这不够方便。

由于

Answer 1

在我不能简单地删除架构的情况下，我使用以下脚本：

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;
/

Answer 2

最简单的方法是删除与之关联的架构：

DROP USER [schema name] CASCADE

从轨道上取下它 - 这是确保唯一的方法;）

对于您提供的脚本，您可以改为运行这些查询，而无需使用以下匿名过程生成中间脚本：

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 3

我found this script你可以在哪里生成脚本来删除所有东西，但是如果我使用通用的东西那就太棒了。

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Enterprise Edition，则应查看restore points and Flashback Database。

如果你有权限和快速脚本来重新创建用户，那么DROP USER ... CASCADE是好的。

Answer 5

之前我一直在那个场景中，我所做的是恢复备份并覆盖当前架构。

这样我就把所有东西都放回原点。

擦除Oracle DB中的数据

5 个答案: