Re: [xwiki-users] Migration fails - xwiki-users@xwiki.org

17 Apr 2012

On 04/17/12 10:50, Moritz Hesse (EA GmbH) wrote:
...
  Detailed information:
     Error number 0 in 11: Uncaught exception
 Wrapped Exception: Java heap space
 com.xpn.xwiki.XWikiException: Error number 0 in 11: Uncaught exception
 Wrapped Exception: Java heap space
 	at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:254)
 	at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:116)
 	at
 org.apache 
You have to increase amount of RAM for your JVM process.

See
http://www.xwiki.org/xwiki/bin/view/FAQ/HowToSolveAJavaHeapMemoryError

If you have a big .xar to import, you may have to:

* export your source wiki space-by-space (see
http://extensions.xwiki.org/xwiki/bin/view/Extension/Large+Export+By+Space+…)
* split your .xar manually (unzip/edit packages.xml/zip part of dirs -
risky if you have weird page names)
* use some BIG machine (I've used EC2 High-Memory instance)

Cheers,

R.