What Situations Cause Oracle Packages to Become Invalid?

Question

The scenario that created this question:

We have a package that is a dependency of another package, sometimes making changes to the \"parent\" package causes the d

Answer 1

In addition to Thomas Jones-Low's answer, if you only modify the package BODY, a dependent object might not be marked as invalid.

However, as soon as you modify the package specification, that is bound to happen.