PDF reports not printing after upgrading to 12i

Hello,

I upgraded oracle apps 11.5.10.2/11201(DB) to 12.1.3/(11203(DB). Every things looks good so far except PDF printing.

PDF reports like "Accounts Payable Trial Balance" not printing in landscpae format.  This report printing in portrait format.

Below are my preprocess parameters from pasta_pdf_land.cfg file.

  % Preprocess for PDF output
        % This is an example for PDF output to print.
        ; Xpdf
        ; preprocess=pdftops {infile} {outfile}
        ; Ghost Script
        ; preprocess=pdf2ps {infile} {outfile}
        ; Acrobat
        preprocess=acroread -toPostScript -pairs -shrink -landscape {infile} {outfile}

I checked my system for acroread using rpm -qa. But it is not installed. Can i use xpdf for instead of acroread? What rpm i have to install for xpdf?