5 Dec
2008
5 Dec
'08
11:50 a.m.
An alternative is to export the pages in chunks. Install the
ImportExport application, which allows to select which pages to export,
and only select a few pages at a time, keeping the size of the
attachments smaller. Then, import each archive one by one.
The best option, however, is to install mysql and import the sql dump.
Ajdin Brandic wrote:
Sergiu
Xwiki would not start with heap size more than 1.6gb, I've attempted
this.
I'll try the other option you've suggested although I do not know how to
load sql dump into HSQLDB? I've you have any suggestions please advise.
I searched web for 2 days looking for answers to this question and all I
found was JAVA_OPTS and CATALINA_OPTS suggestions. I have not seen any
ware your comment on "handling attachment consumes about 27 time the
size of the attachment". It was probably some ware out there but I
missed it.
That mail was pretty old. Only the conclusion is relevant to this topic,
the huge memory requirement.
Maybe you should include it on the Import/Export page
http://platform.xwiki.org/xwiki/bin/view/AdminGuide/ImportExport
Thank you for your response, at least I know where the issue is.
Ajdin
-----Original Message-----
From: users-bounces(a)xwiki.org [mailto:users-bounces@xwiki.org] On Behalf
Of Sergiu Dumitriu
Sent: 05 December 2008 10:14
To: XWiki Users
Subject: Re: [xwiki-users] Java Heap Space, Out of memory exception
Ajdin Brandic wrote:
--
Sergiu Dumitriu
http://purl.org/net/sergiu/
Hi All
I am having a problem uploading a xar file. I get "Java Heap Space,
Out of memory exception" (full message below).
I've downloaded the latest version of XWiki for windows xp (beginner's
version with HSQLDB & Jetty).
In my start_xwiki.bat I have set "set JAVA_OPTS=-Xmx1600m -Xms512m".
1.6gb is the maximum as xwiki would not start if I go over this.
I don't think I have CATALINA.bat any ware so I din not find where to
set CATALINA_OPTS.
I have changed file upload size to 133MB by going to
http://localhost:8080/xwiki/bin/edit/XWiki/XWikiPreferences?editor=obj
ec t and changing Maximum Upload Size:.
The .xar file is 90MB downloaded as backup from
http://patternlanguagenetwork.myxwiki.org/xwiki/bin/view/Main/WebHome.
I do not know what version this runs on since it is on one of the
xwiki farm things :-).
I have Win XP with 3.5gb memory available.
Has anyone had this error recently?
This is a major design flaw of the current attachment storage model. As
stated in a previous mail, handling attachment consumes about 27 time
the size of the attachment, so 90M * 27 ~= 2.5G. This needs to be fixed
ASAP. In the meantime, you can either increase the heap size to more
than 2.5G, or request an sql dump from the myxwiki farm admins.