Limit in number of PDF files to be merged

Hi,
I'm developing a batch in C which intend to generate a xml document and transforming it into a PDF via xsl
using FOP, and the loop is played for 150 documents of 3 pages each. For now, each document is just tables in
black and white, simple font, no images, no color, so each document is 15 Ko. But in the future, it could
change, it could be more that 150 documents, more than 3 pages, colors, images... everything could grow.

My question is : is there a limit in the number of PDF files that can be merged using the command : ghostscript
-q -dNOPAUSE -dBATCH -sDEVICE=pdfwrite -sPAPERSIZE=a4 -sOutputFile=result.pdf file1.pdf
file2.pdf ... ? Or a limit regarding the files' size (of each file or of the result file) ? I have no problem in
the current situation, but I'm worried that my solution could be weak in a few months...

Thank you for your help.

Regards

Michael

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