How can i set post_per_page in my taxonamy?

Just add $my_query['posts_per_page'] = 10; (or some other number) before query_posts call.

But I’m not sure if I understand you correctly.

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)