Large attachments

Hi everybody, I'm new to xwiki and get in trouble with large attachments (e.g. 30 MB). I got the following exception as I tried to upload such a large attachment: Error number 11008 in 11: Exception while parsing uploaded file Wrapped Exception: the request was rejected because it's size exceeds allowed range com.xpn.xwiki.XWikiException: Error number 11008 in 11: Exception while parsing uploaded file Wrapped Exception: the request was rejected because it's size exceeds allowed range at com.xpn.xwiki.XWikiService.actionUpload(XWikiService.java:135) Does anybody have an idea? Kind regards, Stefan