Hello,

Osmania University offers PG Diploma in following courses with one year of duration-

PG Diploma in Mathematics

PG Diploma English Language Teaching

PG Diploma Business Management

PG Diploma Computer Application

There's Modular Certificate Courses(CD based) which requires intermediate passed.

You may consider any of the above choices, depending on your interests. Since, you've already completed your BCom, you may pursue business management or computer application pg diploma. Other two options won't be of much help to you.