Invalid objects

Hi,

A new OLTP application is being developed using forms/reports on Oracle 10g Rac database.


The developers complains of having many invalid objects while developing application, their complain is they were not having this issue when they have developed same application at another client side which is having single instance.

my question is:

How to find the root cause of this problem?


thanks,

...and the invalid objects are?

It is obvious that some procedures will be invalid because developers will drop and create temporary tables in the procedures and thus the respective procedure(s) become invalid after execution.

Take the list of all invalid objects in the applicaton schema(s), recompile all invalid objects, and then compare and discuss with developers.

Thanks,

Appreciated.