oracle數據庫刪除用戶（schema）操作

先關閉應用

1）查看用戶的默認表空間及臨時表空間

set lines 300

col username for a30

select username ,default_tablespace,TEMPORARY_TABLESPACE from dba_users where username='MESPRD';

-----------------------------------

USERNAME   DEFAULT_TABLESPACE     TEMPORAR    Y_TABLESPACE

MESPRD    HTTBS_MESPRD                        TEMP

2)查看該用戶的權限和角色

   select privilege from dba_sys_privs where grantee='SYSADM'

union

select privilege from dba_sys_privs where grantee in (select granted_role from dba_role_privs where grantee='MESPRD' );

-----------------------------------

PRIVILEGE

CREATE CLUSTER

CREATE INDEXTYPE

CREATE OPERATOR

CREATE PROCEDURE

CREATE SEQUENCE

CREATE SESSION

CREATE TABLE

CREATE TRIGGER

CREATE TYPE

已選擇9行。

3)獲取獲得授予用戶權限的腳本

select 'grant '||privilege||' to SYSADM;' from (select privilege from dba_sys_privs where grantee='SYSADM'

union

select privilege from dba_sys_privs where grantee in (select granted_role from dba_role_privs where grantee='SYSADM' ));

4）執行腳本獲得刪除該schema下對象的腳本  mesprd為要刪除的schema

connect mesprd/MESPRD

spool E:\app\Administrator\del_mesprd.sql;  

select 'alter table '||table_name||' drop constraint '||constraint_name||' ;' from user_constraints where constraint_type='R';

select 'truncate table '||table_name ||';' from user_tables; 

select 'drop table '||table_name ||' purge;' from user_tables;  

select 'drop index '||index_name ||';' from user_indexes;  

select 'drop view ' ||view_name||';' from user_views;

select 'drop sequence ' ||sequence_name||';' from user_sequences;  

select 'drop function ' ||object_name||';'  from user_objects  where object_type='FUNCTION';

select 'drop procedure '||object_name||';' from user_objects  where object_type='PROCEDURE';

select 'drop package '|| object_name||';' from user_objects  where object_type='PACKAGE';

select 'drop database link '|| object_name||';' from user_objects  where object_type='DATABASE LINK';    

spool off;

5）sqlplus連接到該schema下，執行如上獲得的腳本

  執行前查看下該schema下的對象，執行后再次查看下該schema下的對象

@？\E:\app\Administrator\del_mesprd.sql; 

  SQL> select object_type,count(*) from user_objects group by object_type;

 6）kill掉連接數據庫的session

  select 'alter system kill session '''||sid||','||serial#||''' immediate;' from v$session where username='MESPRD';

7）刪除該schema

  drop user MESPRD cascade;