Dreaming of opening a gate is both positive and negative as per dream meaning and interpretation. The dream means you will get opportunity to prove your talent and there will be change of luck. But if you are scared or terrified in the dream means you will invite trouble through an action of yours in near future. Dreams of opening a gate means you need to be careful about all your actions and need to keep your senses in control and take proper decisions.
Dream of opening a gate and you are not seen in the dream means an action of another person will bring trouble to you. It also means your instructions will not be followed properly resulting in damage.
Dreaming of opening a gate and you are seen in the dream means you will decide to take risk to achieve something you always wanted.
Dreams of opening gate in an unknown place means getting trapped in a place for a short period but finally you will find a way out.