Datatables: single column filter for multiple table

Datatables: single column filter for multiple table

I have two tables oTable and aTable using Datatables. I want each table
can do single column filter.
oTable = $("#datalist").dataTable({....});
aTable = $("#tracedata").dataTable({....});
filter code
It just work for oTable only. How to make aTable could filtering it column
but with more efficient code?