Extract plesk backup.dump, File size limit exceeded

[Bob11]

In reaction of this article: http://kb.swsoft.com/article_18_1757_en.html

it doesn't work
I get this message:
File size limit exceeded
xxxxx.nl.httpdocs (application/octet-stream)
File size limit exceeded
[root@backup1 day]#

Hopefully you can help me?

I have root access, server says unlimited file size:
[root@s01 recover]# ulimit -a
core file size (blocks, -c) 0
data seg size (kbytes, -d) unlimited
file size (blocks, -f) unlimited
pending signals (-i) 1024
max locked memory (kbytes, -l) 32
max memory size (kbytes, -m) unlimited
open files (-n) 1024
pipe size (512 bytes, -p) 8
POSIX message queues (bytes, -q) 819200
stack size (kbytes, -s) 10240
cpu time (seconds, -t) unlimited
max user processes (-u) 32622
virtual memory (kbytes, -v) unlimited
file locks (-x) unlimited
[root@s01 recover]#

The file size of xxxxx.nl/httpdocs is only 2147483647.
The site of the plesk.dump file is much more.

How to solve this, i need some inportand files from the backup.

Help