Out of curiosity, since you're on Windows, do you happen to have Excel installed?

If so, you could always try using Win32::OLE to control Excel for your manipulation of the Excel file. Of course, I don't think that I personally have ever tried using Excel to open a 1 GB sized file before.

In reply to Re: Out of memory problem in Windows XP 32-bit: only 1GB occupied by dasgar
in thread Out of memory problem in Windows XP 32-bit: only 1GB occupied by blanes

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