SwatiG
First off, I had to change your username as you are not permitted to use something like "OSTicketAdmin" on this Forum. It could falsely give people the impression that you are an admin of the Forum or something; when you're not. Feel free to change it to something else to your liking in your Profile.
To answer your question, no, we only support MySQL and MariaDB databases at this time. We are currently working on v2.0 which will support PostgreSQL and other database backends in addition to MySQL and MariaDB.
Cheers.