oracle快速刪除schema/username
oracle該schema下的對象很多,3萬個以上,直接執行刪除用戶命令要很長時間,半小時未刪除完成
2.刪除前的準備工作
一般刪除用戶都是為了重新導入該用戶數據(不刪除表空間),涉及到刪除該schema的重建,故刪除用戶前收集下該schema信息
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='TEST';
2)查看該用戶的權限和角色
select privilege from dba_sys_privs where grantee='SYSADM'
select privilege from dba_sys_privs where grantee in (select granted_role from dba_role_privs where grantee='TEST' );
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' ));
3.快速刪除用戶辦法
1)停止連接該數據庫的應用服務
(大部分的應用都用重連機制,不關閉應用服務的話應用會反復的連接數據庫,即使使用數據庫kill session的命令也無法結束,會話會一直存在)
2)執行腳本獲得刪除該schema的腳本
test為要刪除的schema
connect test/test
spool /home/oracle/del_test.sql;
prompt --Drop constraint
select 'alter table '||table_name||' drop constraint '||constraint_name||' ;' from user_constraints where constraint_type='R';
prompt --truncate table
select 'truncate table '||table_name ||';' from user_tables;
prompt --Drop tables
select 'drop table '||table_name ||' purge;' from user_tables;
prompt --Drop indexes
select 'drop index '||index_name ||';' from user_indexes;
prompt --Drop view
select 'drop view ' ||view_name||';' from user_views;
prompt --Drop sequence
select 'drop sequence ' ||sequence_name||';' from user_sequences;
prompt --Drop function
select 'drop function ' ||object_name||';' from user_objects where object_type='FUNCTION';
prompt --Drop procedure
select 'drop procedure '||object_name||';' from user_objects where object_type='PROCEDURE';
prompt --Drop package
prompt --Drop package body
select 'drop package '|| object_name||';' from user_objects where object_type='PACKAGE';
prompt --Drop database link
select 'drop database link '|| object_name||';' from user_objects where object_type='DATABASE LINK';
spool off;
3)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,執行後再次查看下該schema下的對象
SQL> select object_type,count(*) from user_objects group by object_type;
4)kill掉連接數據庫的session
select 'alter system kill session '''||sid||','||serial#||''' immediate;' from v$session where username='TEST';
5)刪除該schema
drop user test cascade;
oracle快速刪除schema/username