Hello Syed, BCA subjects in OU 

1st year - 7 subjects including practical

2nd year - Semester I (7 subjects including practical) and Semester II (7 subjects including practical)

3rd year - It also has 2 semester

Link if you wants to see Subjects inside the semester :

http://www.indiastudycenter.com/Other/Syllabus/OU/Degree/BCA/default.asp

If you are asking about the syllabus of bca in osmania university...please refer to:  http://www.osmania.ac.in/Syllabus2016/CBCSSyllabusUG2016/Syllabus/d)_Faculty_of_Science/BA_BSc%20[CA]%20Syllabus_2016-2017.pdf