When I use fixedColumns stable version with X scrolling and no pagination, it is workable to generate horizontal scrolling bar. However, I face a problem "Uncaught TypeError: Cannot read property 'className' of undefined" when sorting column. So, I changed to use fixedCoumns.night.js version to solve it but another problem appears. The horizontal scrolling bar disappears and the datatable become very long.

Use below options for both 2 versions.
"aaData": oSearchData,
"bPaginate": false,
"bInfo": true,
"bFilter": true,
"bJQueryUI": true,
"bProcessing": true,
"sScrollY": "250px",
"sScrollX": "100%",
"sScrollXInner": "1800px",
"bScrollCollapse": true,