I find generating spreadsheets with the SXSSF streaming model in POI works
a lot better. It nearly eliminates the heap size issue. The downside is
that you need to build the spreadsheet from the top down. Since that
describes 97% of the work we do, it works well for us.
From: "Merlino, Basilio" <b.merlino-nisext@xxxxxxxxx>
To: "RPG400-L@xxxxxxxxxxxx" <RPG400-L@xxxxxxxxxxxx>
Date: 12/04/2015 08:28 AM
Subject: POI large file
Sent by: "RPG400-L" <rpg400-l-bounces@xxxxxxxxxxxx>
Dear all
I'm trying to create a large xlsx file using poi and I m encoured an out of
memory problem
The xlsx have more tha 70000 row , the problem happen when I try to save
the book.
Check the javajob (wrkjvmjob ) I can see that the "Maximum heap
size . . . . . . . . . : 2048.000M" is reached.
I try to destroy some object before the save command but with no result, do
you have any idea ? Is there a way to enlarge the maximum heap size ?
Thanks
Basilio
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