先编写bat文件：

exp owner=db_user file=d:\rec\bk_data.dmp

sqlplus   @del.sql

imp fromuser=db_user touser=db_user file=d:\rec\bk_data.dmp

然后编写del.sql：

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;

.

/

exit;