Hi there, I tried to shred 1GB XML data into MonetDB. However, I faced the same problem as Klarinda. The error is as follows. -------------- Error --------------- ERROR = !ERROR: MT_mmap: MapViewOfFile(68c, 2, 0, 0, 436731904, 0) failed !OS: Not enough space !GDKmmap(436731904) fail => BBPtrim(enter) usage[mem=212972396,vm=803209216] ---------- End Error --------------- I use a PC with 1GB RAM, more than 5GB free hard disk space, and WinXP SP2 as OS. I have tried to set Windows' page file to 2GB. I read the previous postings regarding the same problem. I notice that Stefan has done similar experiment using his laptop (Pentium M (Dothan) 1.5 GHz, 2 GB RAM, 2.1 GB free disk space; running Fedora Core 5 Linux (Kernel 2.6.17)). My question is whether I need more than 1GB RAM if I want to shred 1GB XML data. Thanks Erwin Leonardi