Re: [xwiki-users] Heap memory errors when exporting workspace

What happens to any macros or stylesheets that i made changes to? Are these not stored as static files in the $WEBAPPS/xwiki folder? Are there any files that are stored in the webapps/xwiki folder that need to be backed up as well? Or is backing the database sufficient for a full restore?

On Sun, Nov 7, 2010 at 5:31 PM, Sergiu Dumitriu<sergiu(a)xwiki.com> wrote: > On 11/07/2010 06:05 PM, Ziggy wrote: >> Hi Sergiu, >> >> I am trying to upgrade from 2.4 to 2.5.1 >> >> Usually i export my workspace as a xar and then recreate everything by >> refreshing the mysql and tomcat installation. I do also get an export > dump >> of the database for backup. >> >> I use the xar file to re-import the workspace back after re-installing >> tomcat and mysql. This gives me a fresh install. >> >> This time it is failing as it has probably become very large. I know that > i >> can upgrade by just replacing the $TOMCAT/webapps/xwiki folder with the > new >> war file but i am trying to get a clean installation and the xar export > acts >> as a backup of the tomcat resources (jsps, css, javascript etc) as well. >> >> If i try the following will it it work? >> >> - Export the database using mysqldump >> - Re-install mysql >> - Re-install Tomcat >> - Re-import the database data >> - Re-install the 2.5 xwiki war file >> >> Using the above steps, would i be backing up everything in the wiki? This > is >> where i get slightly confused. When i export as a xar file, what exactly > am >> i exporting? is it just the contents of the database or does it include > any >> jsp changes, css, javascript files etc. > > Only the contents of the database, this is why it's more efficient to > just do the transfer at the database level. XAR export+import is useful > when migrating between different systems. > >> Thanks >> >> >> >> On Sun, Nov 7, 2010 at 4:50 PM, Sergiu Dumitriu<sergiu(a)xwiki.com> > wrote: >> >>> On 11/07/2010 03:54 PM, Ziggy wrote: >>>> Hi guys, >>>> >>>> I am trying to export my xwiki workspace so but every time i try it i > get >>>> the following error >>>> >>>> java.lang.OutOfMemoryError: Java heap space >>>> at java.util.Arrays.copyOf(Arrays.java:2882) >>>> at >>>> >>> > java.lang.AbstractStringBuilder.expandCapacity(AbstractStringBuilder.java:100) >>>> at >>>> java.lang.AbstractStringBuilder.append(AbstractStringBuilder.java:390) >>>> at java.lang.StringBuffer.append(StringBuffer.java:224) >>>> at org.suigeneris.jrcs.rcs.impl.Node.toText(Node.java:719) >>>> at org.suigeneris.jrcs.rcs.Archive.toString(Archive.java:914) >>>> >>>> >>>> I know this is an error where the JVM has not enough memory. My JVM >>> memory >>>> settings are set as follows >>>> >>>> set "JAVA_OPTS=%JAVA_OPTS% -Dfile.encoding=UTF8 -Duser.timezone=GMT >>>> -Xmx1024m -XX:MaxPermSize=1024m" >>>> >>>> Everytime i try to increase it to anything above the above values > Tomact >>>> does not startup. Any clues as to how i can fix this? >>>> >>>> I am running xwiki on the following environment >>>> >>>> Tomcat 6.0.29 >>>> Xwiki 2.4.3 >>>> Mysql 5.1 >>>> Windows Xp >>> >>> What do you want to do with the contents of the wiki afterward? If you >>> want to migrate it to another machine, inside another mysql database, >>> then it would be simpler to dump and import the database data directly, >>> using mysqldump or something similar. >>> >>> You should only increase the -Xmx parameter, since this is the heap >>> memory, while MaxPermSize is used only for storing classes. Try >>> something like: >>> -Xmx2048m -XX:MaxPermSize=128m