A dream where there is a wall implies that you are facing obstacles in some part of your life. It may also suggest that you need to be mindful of the limitations in your life and your characteristics.
If you notice a hole in a wall then it implies that you are breaking down old bad habits or ways of thinking. You are seeing a way around an obstacle in your life.
To climb over or break down a wall implies that you have the ability to get through your problems.
If you move through a wall then it represents your ability to spot opportunities in your life.
To build a wall may imply that you are protecting yourself from the dangers around you, or you are looking for more personal space. It could also mean that you are being stubborn in some part of your life.