举例:删除用户 abc,
首先,以sysdba用户登录数据库
$sqlplus / as sysdba
删除用户abc
SQL>drop user abc cascade
注意: 删除了用户abc,只是删除了该用户下的schema objects,是不会删除相应的tablespace的。
删除指定用户所有表
1、
select ‘Drop table ’||table_name||‘;’
from all_tables
where owner=‘要删除的用户名(注意要大写)’;
2、删除所有表
以用户test为例
for example:
declare
cursor cur1 is select table_name from dba_tables where owner=‘TEST’;
begin
for cur2 in cur1 loop
execute immediate ‘drop table test.’||cur2.table_name;
end loop;
end;
3、这个删除当前用户的所有对象(表、视图、触发器、存储过程、函数)
DECLARE
TYPE name_list IS TABLE OF VARCHAR2(40);
TYPE type_list IS TABLE OF VARCHAR2(20);
Tab_name name_list:=name_list();
Tab_type type_list:=type_list();
sql_str VARCHAR2(500);
BEGIN
sql_str := ‘select uo.object_name,uo.object_type from user_objects uo where uo.object_type not in(’‘INDEX’‘,’‘LOB’‘) order by uo.object_type desc’;
EXECUTE IMMEDIATE sql_str BULK COLLECT INTO tab_name,tab_type;
FOR i IN Tab_name.FIRST.。Tab_name.LAST LOOP
sql_str := ‘DROP ’ || Tab_type(i) || ‘ ’ || Tab_name(i);
EXECUTE IMMEDIATE sql_str;
END LOOP;
END;