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

Hi Sergiu, I have not made any changes via the filesystems. All changes i have made

via the xwiki itself. As an example, i have edited and updated the "shortcuts" and "quick links" panels. Do you mean that any change that is done via the xwiki system is stored

the database and not on teh filesystem? Does this mean that exporting

re-importing the database would restore the changes i made to the panels

well?

On Sun, Nov 7, 2010 at 5:59 PM, Sergiu Dumitriu<sergiu(a)xwiki.com>

> On 11/07/2010 06:47 PM, Ziggy wrote: >> 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

> to >> be backed up as well? Or is backing the database sufficient for a full >> restore? > > If you made changes to files on the filesystem, then you must take care > of manually migrating those changes into the new version. This is why it > is not recommended to touch the filesystem files, but to override them > inside the wiki. Most templates can be overridden by attaching the > modified versions to the skin document (XWiki.DefaultSkin by default). > >> >> 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

>>>> 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

>>>> 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

>>> new >>>> war file but i am trying to get a clean installation and the xar

>>> 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

>>> 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

>>> 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

>>> get >>>>>> the following error >>>>>> >>>>>> java.lang.OutOfMemoryError: Java heap space >>>>>> at java.util.Arrays.copyOf(Arrays.java:2882) >>>>>> at >>>>>> >>>>> >>> >

>>>>>> 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

>>>>>> >>>>>> >>>>>> 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

>>>>> want to migrate it to another machine, inside another mysql

>>>>> 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