Can not find the Generate Schema script option in Toad
For versions 11.6.1 and below, Generate Schema Script is only available with the DB Admin module enabled.
In Toad 12.0 and above, this functionality is available in the Xpert Edition, or Base and Professional Edition with the DB Admin Module enabled.
To confirm which edition is applied, please go to Help | About
If enabled, the functionality can be found under Database | Export menu.