select 'drop table ' || table_name ||';'||chr(13)||chr(10) from user_tables; --delete tables
select 'drop view ' || view_name||';'||chr(13)||chr(10) from user_views; --delete views
select 'drop sequence ' || sequence_name||';'||chr(13)||chr(10) from user_sequences;--delete seqs
select 'drop function ' || object_name||';'||chr(13)||chr(10) from user_objects where object_type='FUNCTION';--delete functions
select 'drop package ' || object_name||';'||chr(13)||chr(10) from user_objects where object_type='PACKAGE';--delete pags
如果要是用PL/SQL工具查询的 直接把查询结果拷贝出来执行就行了。