Pakistan retained the same side that lost Friday's first one-dayer by 79 runs.
Bangladesh, looking to seal their first-ever series win over Pakistan, welcomed back skipper Mashrafe Mortaza, who missed the opener due to a one-match ban for his team's slow over-rates at the World Cup.
Mortaza, playing his 150th one-day international, replaced seamer Abul Hasan for the second of three ODIS.
Bangladesh: Mashrafe Mortaza (capt), Tamim Iqbal, Soumya Sarkar, Mohammad Mahmudullah, Shakib Al Hasan, Mushfiqur Rahim, Sabbir Rahman, Nasir Hossain, Arafat Sunny, Taskin Ahmed, Rubel Hossain.
Pakistan : Azhar Ali (capt), Sarfraz Ahmed, Mohammad Hafeez, Fawad Alam, Mohammad Rizwan, Haris Sohail, Saad Nasim, Saeed Ajmal, Wahab Riaz, Rahat Ali, Junaid Khan.
Umpires: Enamul Haque (BAN) and Nigel Llong (ENG)
TV umpire: Ruchira Palliyaguruge (SRI)
Match referee: Jeff Crowe (NZL)