Hi i have a chance to flying to Bahrain so is it need to having ecnr stamp for my pp..i get my pp 1month back?

As per the new rule of Ministry of Foreign Affairs of India all are entitled for the ECNR status, unless otherwise mentioned ECR on the pport. So normally the authorities will not put the ECNR stamp on the pports nowadays. In your pp if the status is ECR, then you have to apply for the ECNR status. The requirement is attach a copy of your attested educational certificate (matriculation or above) along with the specific application form.