Select statement getting blocked on LGWR session

Question

During the peak windows of my application when it tries to save large amount of data, i have noticed that even Select queries are waiting on LGWR operation. In the table dba_hist_active_sess_history, I can see select query waiting with blocked session column showing LGWR process. This leads to a situation where database runs out of connections. I don't want Select operations to wait for LGWR operation as its querying historical data which is a different row. Any ideas how this can be achieved.