我们如何在oracle中找到相同数据库实例的两个模式之间的对象差异

Question

is there any query which we can use to find the objects which exist in say schema A, but not exist in schema B?

here both schemas belongs to same database instance

Answer 1

Select object_name from dba_objects where owner = schemaA
Minus
Select object_name from dba_objects where owner = schemaB

Answer 2

A bit more precise query (considering also object type) is

select OBJECT_TYPE, OBJECT_NAME from dba_objects where owner = 'SchemaA'
minus
select OBJECT_TYPE, OBJECT_NAME from dba_objects where owner = 'SchemaB';

If you ignore object type and you have table X in one schema and package X in other - you will see no difference.